CN105450513A - Method for filing mail attachments, and cloud storage server - Google Patents

Method for filing mail attachments, and cloud storage server Download PDF

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Publication number
CN105450513A
CN105450513A CN201511031872.5A CN201511031872A CN105450513A CN 105450513 A CN105450513 A CN 105450513A CN 201511031872 A CN201511031872 A CN 201511031872A CN 105450513 A CN105450513 A CN 105450513A
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China
Prior art keywords
mail
cloud storage
storage server
file
account
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Granted
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CN201511031872.5A
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Chinese (zh)
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CN105450513B (en
Inventor
邓立
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201511031872.5A priority Critical patent/CN105450513B/en
Publication of CN105450513A publication Critical patent/CN105450513A/en
Priority to PCT/CN2016/112151 priority patent/WO2017114365A1/en
Application granted granted Critical
Publication of CN105450513B publication Critical patent/CN105450513B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/40—Support for services or applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/07—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail characterised by the inclusion of specific contents
    • H04L51/08—Annexed information, e.g. attachments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1073—Registration or de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

The embodiment of the invention provides a method for filing mail attachments, and a cloud storage server. The method comprises the steps: receiving a mail identification and a cloud storage account number, which are transmitted by a mail client, wherein the mail identification is the identification of a target mail received by the mail client; determining whether a target attachment corresponding to the target mail is stored in the cloud storage server or not according to the mail identification; determining a mail account number corresponding to the cloud storage account number when the target attachment is not stored in the cloud storage server; logging in a mail server according to the mail account number; transmitting the mail identification to the mail server; downloading the target attachment from the mail server according to the mail identification; and building the corresponding relation between the target attachment and the mail identification. According to the embodiment of the invention, the method can save the storage space of the mail client and the flow bandwidth through directly downloading the target attachment from the mail server.

Description

The method of filing Email attachment and cloud storage server
Technical field
The present invention relates to the communications field, and more specifically, relate to method and the cloud storage server of filing Email attachment.
Background technology
In routine work and commercial activity, mail plays very important role.In mail communication process, file is generally as Email attachment transmission.Due to some important files generally can be comprised in Email attachment, regularly Email attachment is carried out filing the common practice becoming Mail Clients.Generally, Email attachment can file Mail Clients this locality, mail server or cloud storage server.
Existing Mail Clients, when filing Email attachment, mainly contains filing and arrives this locality with filing to these two kinds of ways of cloud storage server.But Email attachment is archived in this locality, and file is easily lost, and the speed retrieving annex is also slow.Because memory capacity is limited, Mail Clients also can the Email attachment of periodic cleaning local cache.So for deleted file, user cannot carry out retrieving or accessing.And the Email attachment stored in this locality, easily spied upon, individual privacy cannot well be protected.
When Email attachment files cloud storage server, to file this locality similar with Email attachment, and Mail Clients also can the Email attachment of periodic cleaning local cache.When user needs to search this annex, Mail Clients is preferentially from this locality retrieval, and local retrieval not then, then retrieves Email attachment from cloud storage server, and downloads Email attachment from cloud storage server.This Email attachment files the method for cloud storage server, although evaded the problem of some local filings and Mail Clients filing, the efficiency of its filing is very low, wastes bandwidth consumption and the system resource of Mail Clients.And when multiple Mail Clients files same envelope mail, concurrent load and the resource consumption of mail server and cloud storage server can be strengthened.
Summary of the invention
Embodiments provide a kind of method and the cloud storage server of filing Email attachment, memory space and the flow bandwidth of Mail Clients can be saved.
First aspect, provide a kind of method of filing Email attachment, be applied to cloud storage server, the corresponding relation that cloud stores account and mail account is recorded in cloud storage server, cloud storage account and mail account are respectively the account that user registers at cloud storage server and mail server, the method comprises: the mail piece identifiers and the cloud that receive Mail Clients transmission store account, and mail piece identifiers is the mark of the targeted mails that Mail Clients receives; Target annex corresponding to targeted mails whether has been stored according in mail piece identifiers determination cloud storage server; When determining not store target annex in cloud storage server, determine that cloud stores mail account corresponding to account; Mail server is logged according to mail account; Mail piece identifiers is sent to mail server; From mail server, target annex is downloaded according to mail piece identifiers; Set up the corresponding relation of target annex and mail piece identifiers.
The embodiment of the present invention is by first judging whether stored target annex in cloud storage server, and when not storing target annex in cloud storage server, directly download target annex from mail server, thus do not need, through Mail Clients transfer target annex, memory space and the flow bandwidth of Mail Clients can be saved.
On the other hand, being stored in target annex on cloud storage server can permanent archival, can not lose.And only on cloud storage server, store this target annex a, the memory space of cloud storage server can be saved.
In conjunction with first aspect, in the first possible implementation of first aspect, the method also comprises: according to the N number of file metadata of N number of file generated in target annex and N number of file metadata mark ID, wherein, N number of file and N number of file metadata one_to_one corresponding, N number of file metadata and N number of file metadata ID one_to_one corresponding, N >=1; Store N number of file metadata ID and N number of file metadata, wherein, N number of file metadata ID and mail piece identifiers are corresponding stored ground.
Quote (correspondence) relation by what arrange that cloud stores account and metadata, make cloud storage account or store mail account corresponding to account with cloud to share a target annex only stored on cloud storage server.
In conjunction with the above-mentioned possible implementation of first aspect, in the implementation that the second of first aspect is possible, the method also comprises: when determining to have stored target annex in cloud storage server, obtains the file metadata mark ID corresponding with mail piece identifiers according to mail piece identifiers; The file metadata corresponding with file metadata ID is obtained according to file metadata ID; Cloud file metadata being stored to non-storage file metadata stores the memory space of account.
In conjunction with the above-mentioned possible implementation of first aspect, in the third possible implementation of first aspect, the method also comprises: receive the access request that Mail Clients sends, and access request is used for the part or all of data message of at least one file in the N number of file of request access; The part or all of data message of at least one file in N number of file is searched according to access request; The part or all of data message of at least one file in N number of file is sent to Mail Clients.
When Mail Clients needs access file, only need to retrieve at cloud storage server, such range of search is wider, efficiency is higher, can reduce the resource consumption of Mail Clients this locality simultaneously.
Second aspect, provide a kind of method of filing Email attachment, be applied to Mail Clients, the corresponding relation that cloud stores account and mail account is recorded in Mail Clients, cloud storage account and mail account are respectively the account that user registers at cloud storage server and mail server, the method comprises: the remainder in receiving target mail except the target annex of targeted mails, and the remainder of targeted mails comprises the mail head of targeted mails; Mail piece identifiers is obtained from the mail head of targeted mails; Mail piece identifiers and cloud storage account is sent, so that cloud storage server stores account according to described mail piece identifiers and cloud download target annex from mail server to cloud storage server.
The embodiment of the present invention by directly downloading target annex from mail server, thus does not need, through Mail Clients transfer target annex, can save memory space and the flow bandwidth of Mail Clients.
On the other hand, being stored in target annex on cloud storage server can permanent archival, can not lose.And only on cloud storage server, store this target annex a, the memory space of cloud storage server can be saved.
In conjunction with second aspect, in the first possible implementation of second aspect, the method also comprises: the operation obtaining client user; Generate the access request corresponding with operation according to operation, access request is used for the part or all of data message of at least one file in N number of file of request access cloud storage server storage; Access request is sent to cloud storage server; Receive the part or all of data message of at least one file in N number of file that cloud storage server sends according to access request.
The third aspect, provide a kind of method of filing Email attachment, be applied to mail server, the method comprises: the logging request receiving mail account; According to logging request, login authentication is carried out to mail account; When logging in authentication success, receive the download request that cloud storage server sends, wherein, download request carries mail piece identifiers; The target annex corresponding with mail piece identifiers is sent to cloud storage server.
The embodiment of the present invention by directly downloading target annex from mail server, thus does not need, through Mail Clients transfer target annex, can save memory space and the flow bandwidth of Mail Clients.
Fourth aspect, provide a kind of cloud storage server, the corresponding relation that cloud stores account and mail account is recorded in cloud storage server, cloud storage account and mail account are respectively the account that user registers at cloud storage server and mail server, comprise: receiving element, for receiving mail piece identifiers and the cloud storing subscriber information of Mail Clients transmission, mail piece identifiers is the mark of the targeted mails that Mail Clients receives; Determining unit, stores target annex corresponding to targeted mails for determining whether according to mail piece identifiers; Determining unit also for, when determining not store target annex, determine that cloud stores mail account corresponding to account; Log in unit, for logging in mail server according to mail account; Transmitting element, for sending mail piece identifiers to mail server; Download unit, for downloading target annex according to mail piece identifiers from mail server; Set up unit, for setting up the corresponding relation of target annex and mail piece identifiers.
The embodiment of the present invention is by first judging whether stored target annex in cloud storage server, and when not storing target annex in cloud storage server, directly download target annex from mail server, thus do not need, through Mail Clients transfer target annex, memory space and the flow bandwidth of Mail Clients can be saved.
On the other hand, being stored in target annex on cloud storage server can permanent archival, can not lose.And only on cloud storage server, store this target annex a, the memory space of cloud storage server can be saved.
The cloud storage server of fourth aspect can comprise the unit of the method in the arbitrary possible implementation for performing first aspect or first aspect, for performing the method in the possible implementation of the either side of first aspect or first aspect.
5th aspect, provide a kind of Mail Clients, the corresponding relation that cloud stores account and mail account is recorded in Mail Clients, cloud storage account and mail account are respectively the account that user registers at cloud storage server and mail server, this Mail Clients comprises: receiving element, for the remainder in receiving target mail except the target annex of targeted mails, the remainder of targeted mails comprises the mail head of targeted mails; Acquiring unit, for obtaining mail piece identifiers from the mail head of targeted mails; Transmitting element, for sending mail piece identifiers and cloud storage account to cloud storage server, so that cloud storage server stores account according to described mail piece identifiers and cloud download target annex from mail server.
The embodiment of the present invention by directly downloading target annex from mail server, thus does not need, through Mail Clients transfer target annex, can save memory space and the flow bandwidth of Mail Clients.
On the other hand, being stored in target annex on cloud storage server can permanent archival, can not lose.And only on cloud storage server, store this target annex a, the memory space of cloud storage server can be saved.
The Mail Clients of the 5th aspect can comprise the unit of the method in the arbitrary possible implementation for performing second aspect or second aspect, for performing the method in the possible implementation of the either side of second aspect or second aspect.
6th aspect, provides a kind of mail server, and this mail server comprises: receiving element, for receiving the logging request of mail account; Authenticating unit, for carrying out login authentication according to logging request to described mail account; When logging in authentication success, receiving element is also for receiving the download request that cloud storage server sends, and wherein, download request carries mail piece identifiers; Transmitting element, for sending the target annex corresponding with mail piece identifiers to cloud storage server.
The embodiment of the present invention by directly downloading target annex from mail server, thus does not need, through Mail Clients transfer target annex, can save memory space and the flow bandwidth of Mail Clients.
The mail server of the 6th aspect can comprise the unit of the method in the arbitrary possible implementation for performing the third aspect or the third aspect, for performing the method in the possible implementation of the either side of the third aspect or the third aspect.
7th aspect, provide a kind of cloud storage server, the corresponding relation that cloud stores account and mail account is recorded in this cloud storage server, cloud storage account and mail account are respectively the account that user registers at cloud storage server and mail server, this cloud storage server comprises: transmitter, receiver, processor, memory and bus system.Wherein, this receiver, this transmitter, this memory are connected by this bus system with this processor, this memory is for storing computer instruction, and this processor performs the method in the implementation possible arbitrarily of first aspect or first aspect for running this computer instruction.
Eighth aspect, provide a kind of Mail Clients, the corresponding relation that cloud stores account and mail account is recorded in this Mail Clients, cloud storage account and mail account are respectively the account that user registers at cloud storage server and mail server, this Mail Clients comprises: transmitter, receiver, processor, memory and bus system.Wherein, this receiver, this transmitter, this memory are connected by this bus system with this processor, this memory is for storing computer instruction, and this processor performs the method in the implementation possible arbitrarily of second aspect or second aspect for running this computer instruction.
9th aspect, provides a kind of mail server, and this mail server comprises: transmitter, receiver, processor, memory and bus system.Wherein, this receiver, this transmitter, this memory are connected by this bus system with this processor, this memory is for storing computer instruction, and this processor performs the method in the implementation possible arbitrarily of the third aspect or the third aspect for running this computer instruction.
Tenth aspect, provides a kind of computer-readable medium, and for storing computer program, this computer program comprises the instruction of the method in the implementation possible arbitrarily for performing first aspect or first aspect.
11 aspect, provides a kind of computer-readable medium, and for storing computer program, this computer program comprises the instruction of the method in the implementation possible arbitrarily for performing second aspect or second aspect.
12 aspect, provides a kind of computer-readable medium, and for storing computer program, this computer program comprises the instruction of the method in the implementation possible arbitrarily for performing the third aspect or the third aspect.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the indicative flowchart of the method for filing Email attachment according to an embodiment of the invention.
Fig. 2 is the indicative flowchart of the method for filing Email attachment in accordance with another embodiment of the present invention.
Fig. 3 is the indicative flowchart of the method for filing Email attachment in accordance with another embodiment of the present invention.
Fig. 4 is the schematic block diagram of the cloud storage server according to the embodiment of the present invention.
Fig. 5 is the schematic block diagram of the Mail Clients according to the embodiment of the present invention.
Fig. 6 is the schematic block diagram of the mail server according to the embodiment of the present invention.
Fig. 7 is the schematic block diagram of cloud storage server according to another embodiment of the present invention.
Fig. 8 is the schematic block diagram of Mail Clients according to another embodiment of the present invention.
Fig. 9 is the schematic block diagram of mail server according to another embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the indicative flowchart of the method for filing Email attachment according to the embodiment of the present invention.The method of Fig. 1 performs primarily of Mail Clients, mail server and cloud storage server.
101, the remainder of Mail Clients receiving target mail except the target annex of targeted mails, the remainder of targeted mails comprises the mail head of targeted mails.
Targeted mails refers to the new mail that Mail Clients receives, and target annex is the annex in new mail.Do not comprise target attachment entity in the mail that Mail Clients receives, the information relevant with target attachment entity can be only included.
It should be noted that, if the mail that Mail Clients receives the information not relevant to attachment entity, also carrying out annex filing with regard to not needing.Therefore, the embodiment of the present invention only describes in mail the situation that there is the information that attachment entity is correlated with.
102, Mail Clients obtains mail piece identifiers from the mail head of targeted mails.
By resolving mail, mail piece identifiers can be obtained from mail head.Mail piece identifiers is corresponding with targeted mails, namely can determine unique targeted mails according to mail piece identifiers.The information relevant with target annex can be comprised in mail piece identifiers, this target annex can be determined according to this information, also directly can determine target annex according to this mail piece identifiers.
103, Mail Clients sends mail piece identifiers and cloud storing subscriber information to cloud storage server.
Cloud storing subscriber information may be used for Indicated Cloud and stores user.Such as, account and/or password that cloud stores user can be comprised in cloud storing subscriber information.
Mail Clients can send mail piece identifiers and cloud storing subscriber information by the archival interface calling cloud storage server.The archival interface of cloud storage server can be the standard interface of defined cloud storage server.
104, whether cloud storage server has stored target annex according in mail piece identifiers determination cloud storage server.
Alternatively, as an embodiment, cloud storage server can not store target annex by determining not store in cloud storage server in mail piece identifiers determination cloud storage server.That is, as long as there is no mail piece identifiers in cloud storage server, just illustrate in cloud storage server there is no target annex.As long as have mail piece identifiers in cloud storage server, just illustrate in cloud storage server have target annex.
In addition, cloud storage server can also arrange (annex) corresponding with mail piece identifiers and files state.The filing situation of filing state representation annex can be filing neutralization to have filed two kinds of situations.File and represented that this annex completes download, and be stored in cloud storage server; Filing and representing that this annex is downloaded, if complete download, filing state is automatically updated into files.But no matter be which kind of filing state, as long as there is filing state in cloud storage server, cloud storage server does not need to store target annex again.
105, when not storing target annex in cloud storage server determination cloud storage server, cloud storage server sends client user's information and annex download request to mail server.
Annex download request can carry mail piece identifiers.Client user's information may be used for instruction and stores client user corresponding to user with cloud.Annex download request may be used for asking mail server to send the target annex corresponding with mail piece identifiers when logging in authentication success to client user.
Particularly, cloud storage server is searched by cloud storing subscriber information and is stored client user's information of corresponding client user with cloud with storing, and send this client user's information and annex download request to mail server, such as send the account of this client user and password and this annex download request to mail server.Mail server carries out login authentication to this client user or whether mail server judges this client user authentication success, and after authentication success or after determining client user's authentication success, search targeted mails according to the mail piece identifiers in the annex download request that the cloud storage server received sends.
106, mail server, according to annex download request, sends target annex to cloud storage server.
Mail server, according to the mail piece identifiers carried in download request, can be known that cloud storage server needs the annex downloaded, i.e. this target annex, and after finding this target annex, this target annex is sent to cloud storage server.
107, target annex and mail piece identifiers are stored in cloud storage server by cloud storage server.
Target annex, after the target annex receiving mail server transmission, is stored on this cloud storage server, and stores this mail piece identifiers by cloud storage server.
The embodiment of the present invention is by first judging whether stored target annex in cloud storage server, and when not storing target annex in cloud storage server, directly download target annex from mail server, thus do not need, through Mail Clients transfer target annex, memory space and the flow bandwidth of Mail Clients can be saved.
On the other hand, being stored in target annex on cloud storage server can permanent archival, can not lose.And only on cloud storage server, store this target annex a, the memory space of cloud storage server can be saved.
In addition, from mail server, download Email attachment, all do not provide breakpoint to download characteristic in most cases.If network interruption or program exception in downloading process, then probably all that has been achieved is spoiled, needs again to download.And the method for the filing Email attachment that the embodiment of the present invention provides, cloud storage server has breakpoint download function, can tackle unstable networks or all kinds of exception, can save traffic consumes to a certain extent, shorten download time, thus can Consumer's Experience be improved.
Alternatively, as an embodiment, as shown in Figure 2, in 101, before the remainder of Mail Clients receiving target mail except the target annex of institute's targeted mails, the method can also comprise following 201 ~ 205 steps.
201, Mail Clients receives first logging request of client user.
First logging request can carry client user's information.Client user's information can indicate client user, can comprise account and/or the password of client user in client user's information.
202, according to the first logging request, mail server carries out the first login authentication to Mail Clients.
First the embodiment of the present invention carries out login authentication to Mail Clients, to verify the true identity of the Mail Clients sending logging request.Logging in authentication utilizes mail server to carry out authentication to Mail Clients.Now, the account of preserving before mail server can utilize and the with it password of correspondence are compared with the account of the client user carried in logging request and password corresponding with it, the account of preserving before mail server is identical with the account of the client user carried in logging request, and when the password of this account of preserving before mail server is identical with the password of the account of the client user carried in logging request, authentication just by, namely log in authentication success.
203, when first logs in authentication success, Mail Clients sends to cloud storage server the second logging request and the client user's information that cloud stores user.
That is, after mail server is to the success of Mail Clients authentication, cloud stores user and carries out logging request.This logging request i.e. the second logging request carries cloud storing subscriber information, and this cloud storing subscriber information can comprise cloud and store the account of user and password corresponding with it.
204, cloud storage server stores user to cloud and carries out login authentication.
The embodiment of the present invention, after Mail Clients being carried out to the success of login authentication, stores user to cloud and carries out login authentication, to verify that the cloud sending logging request stores the true identity of user.Log in the cloud storage server utilized in authentication and authentication is carried out to cloud storage user.Now, the password of the account of preserving before cloud storage server can utilize and with it correspondence and the cloud carried in logging request store the account of user and password corresponding is with it compared, the account of preserving before cloud storage server is identical with the account that the cloud carried in logging request stores user, and the password of this account of preserving before cloud storage server and the cloud that carries in logging request store the password of the account of user identical time, authentication just by, namely authentication success.
205, when logging in authentication success, cloud storage server preserves cloud storing subscriber information and client user's information accordingly.
The while that login authentication being successful, cloud storage server also just completes the binding of client user and cloud storage user.Meanwhile, cloud storage server can preserve the binding relationship of client user and cloud storage user, namely can preserve cloud storing subscriber information and client user's information accordingly.Meanwhile, Mail Clients also can preserve cloud storing subscriber information and client user's information accordingly.
After completing client user and cloud and storing the binding first of user, as long as this client user logs at Mail Clients, cloud storage server automatically will store user to the cloud bound with this client user and carry out login authentication.That is, as long as client user's Successful login, cloud stores user will log in cloud storage server automatically.
Fig. 3 is the indicative flowchart of the method for filing Email attachment according to another embodiment of the present invention.Method shown in Fig. 3 can be performed by mail server, records the corresponding relation that cloud stores account and mail account in this cloud storage server, and cloud storage account and mail account are respectively the account that user registers at cloud storage server and mail server.
310, the mail piece identifiers and the cloud that receive Mail Clients transmission store account, and mail piece identifiers is the mark of the targeted mails that Mail Clients receives.
Particularly, this step specifically can with reference to the step 103 shown in Fig. 1, and the cloud storing subscriber information in 103 can comprise cloud and store account, for simplicity, does not repeat them here.
320, whether store target annex corresponding to targeted mails according in mail piece identifiers determination cloud storage server.
Particularly, this step specifically with reference to the step 104 shown in Fig. 1, for simplicity, can not repeat them here.
330, when determining not store target annex in cloud storage server, determine that cloud stores mail account corresponding to account.
340 log in mail server according to mail account.
350, send mail piece identifiers to mail server.
Particularly, step 330 ~ 350 specifically with reference to the step 105 shown in Fig. 1, for simplicity, can not repeat them here.
360, from mail server, download target annex according to mail piece identifiers.
Particularly, this step specifically with reference to the step 106 shown in Fig. 1, for simplicity, can not repeat them here.
370, set up the corresponding relation of target annex and mail piece identifiers.
Particularly, this step specifically can with reference to the step 107 shown in Fig. 1, can set up and preserve the corresponding relation of target annex and mail piece identifiers, for simplicity, do not repeat them here in 107.
The embodiment of the present invention is by first judging whether stored target annex in cloud storage server, and when not storing target annex in cloud storage server, directly download target annex from mail server, thus do not need, through Mail Clients transfer target annex, memory space and the flow bandwidth of Mail Clients can be saved.
On the other hand, being stored in target annex on cloud storage server can permanent archival, can not lose.And only on cloud storage server, store this target annex a, the memory space of cloud storage server can be saved.
Alternatively, as an embodiment, the method can also comprise the following steps: cloud storage server is according to the N number of file metadata of N number of file generated in target annex and N number of file metadata mark ID, wherein, N number of file and N number of file metadata one_to_one corresponding, N number of file metadata and N number of file metadata ID one_to_one corresponding, N >=1; Cloud storage server stores N number of file metadata ID and N number of file metadata, and wherein, N number of file metadata ID and mail piece identifiers are corresponding stored ground.
Except target attachment entity, cloud storage server can preserve the file metadata (file description information) of the file in target annex simultaneously.
Table 1 is below an example of the file metadata in target annex.It should be noted that the example of table 1 is not restrictive, the file metadata of the embodiment of the present invention is not limited thereto, can deletion field as required, or increases other fields.
Table 1 file metadata
Sequence number Field Field description
1 File ID The unique identification of file
2 Filename File name
3 File size The size of file
4 File type The type of file
5 Update time The update time of file content
6 Path The store path of file
In addition, the corresponding file metadata ID of each file metadata meeting, mail piece identifiers and storage file metadata ID also can store accordingly by cloud storage server while storage file metadata.Such as, cloud storage server can store the corresponding relation between mail piece identifiers and file metadata ID in table form.Just can find file metadata ID according to storage mail piece identifiers like this, and then file metadata accordingly can be found.
Alternatively, as an embodiment, the method can also comprise: when having stored target annex in cloud storage server determination cloud storage server, and cloud storage server obtains the file metadata mark ID corresponding with mail piece identifiers according to mail piece identifiers; Cloud storage server obtains the file metadata corresponding with file metadata ID according to file metadata ID; File metadata is stored to the memory space of the cloud storage account of file metadata by cloud storage server.Wherein, this cloud does not store this file metadata before storing account, belongs to and preserves first, in fact, only needs to preserve once yet.
When having stored target annex in cloud storage server determination cloud storage server, just do not need to download target annex from mail server again, but only need the file metadata of the file found in target annex, and by the account of this metadata replication portion to oneself, namely this cloud stores account.Such as, cloud storage server can store the corresponding relation between ground mail piece identifiers and file metadata ID with form ground form in advance.When cloud storage server needs to search this file metadata, can find and this mail piece identifiers file metadata ID accordingly according to mail piece identifiers, and then file metadata accordingly can be found according to file metadata ID.Then this file metadata store is stored the memory space of account to this cloud.
Alternatively, file metadata can comprise owner and identifies ID.So, after this cloud stores user's xcopy metadata, the owner in file metadata can be identified the ID that ID changes to oneself, alternative document metadata remains unchanged.
In embodiments of the present invention, when different client users receives same envelope mail, cloud storage server only needs to download a target annex from mail server, and by arranging file metadata adduction relationship, just can realize multiple client user and sharing target.Thus the consumption of the network bandwidth of Mail Clients, memory space and system resource can be saved.
It should be noted that, when different client users receives same envelope mail, only have the request of calling archival interface at first, namely carry out the client user filing mail at first, just can trigger cloud storage server and download annex and the action of spanned file metadata from mail server.
Alternatively, as an embodiment, the method can also comprise: Mail Clients obtains the operation of client user; Mail Clients generates the access request corresponding with operation according to operation, and access request is used for the part or all of data message of at least one file in N number of file of request access cloud storage server storage; Mail Clients sends access request to cloud storage server; Mail Clients receives the part or all of data message of at least one file in N number of file that cloud storage server sends according to access request.
Client user can conduct interviews to the file that cloud storage server is preserved, such as online preview or download.Such as, client user can conduct interviews to the file in the listed files of Mail Clients, and listed files can be that the filename of the file of this client user preserved by cloud stores service is formed, and also can be that the keyword of file is formed.
Such as, in embodiments of the present invention, client user carries out double click operation to the some filenames in listed files, and now, Mail Clients can generate the access request corresponding with this operation according to this operation, and is sent to cloud storage server.Cloud storage server searches the data message in this file according to access request, and sends the data message in this file to Mail Clients.
It should be noted that, client user only may need the partial content (data message) in viewing files, so just can utilize the online preview function of cloud storage server, does not need to download whole file, just can content in viewing files.Like this, the traffic consumes of Mail Clients can be saved.
Also it should be noted that, when Mail Clients needs to retrieve Email attachment, directly can call the document retrieval interface (standard interface) that cloud deposits server, can browsing file or down operation be carried out by document retrieval interface.
Above composition graphs 1 to Fig. 3, describes the method for the filing Email attachment according to the embodiment of the present invention in detail, below in conjunction with Fig. 4, describes the cloud storage server according to the embodiment of the present invention in detail.
Fig. 4 shows the schematic block diagram of the cloud storage server 400 of the embodiment of the present invention.Record the corresponding relation that cloud stores account and mail account in this cloud stores service 400, cloud storage account and mail account are respectively the account that user registers at cloud storage server and mail server.This cloud storage server 400 comprises receiving element 410, determining unit 420, logs in unit 430, transmitting element 440, download unit 450 and set up unit 460.
Receiving element 410 can receive mail piece identifiers and the cloud storing subscriber information of Mail Clients transmission, and mail piece identifiers is the mark of the targeted mails that Mail Clients receives.
Determining unit 420 can determine whether to store target annex corresponding to targeted mails according to mail piece identifiers.
When determining not store target annex, determining unit 420 also can determine that cloud stores mail account corresponding to account.
Log in unit 430 and can log in mail server according to mail account.
Transmitting element 440 can send mail piece identifiers to mail server.
Download unit 450 can download target annex according to mail piece identifiers from mail server.
Set up the corresponding relation that unit 460 can set up target annex and mail piece identifiers.
The embodiment of the present invention is by first judging whether stored target annex in cloud storage server, and when not storing target annex in cloud storage server, directly download target annex from mail server, thus do not need, through Mail Clients transfer target annex, memory space and the flow bandwidth of Mail Clients can be saved.
On the other hand, being stored in target annex on cloud storage server can permanent archival, can not lose.And only on cloud storage server, store this target annex a, the memory space of cloud storage server can be saved.
Alternatively, as an embodiment, cloud storage server 400 can also comprise: generation unit and the first memory cell.Now, generation unit can identify ID according to the N number of file metadata of N number of file generated in target annex and N number of file metadata, wherein, and N number of file and N number of file metadata one_to_one corresponding, N number of file metadata and N number of file metadata ID one_to_one corresponding, N >=1; First memory cell can store N number of file metadata ID and N number of file metadata, and wherein, N number of file metadata ID and mail piece identifiers are corresponding stored ground.
Alternatively, as an embodiment, cloud storage server 400 can also comprise: acquiring unit and the second memory cell.Now, when determining unit 420 is determined to store target annex, acquiring unit can obtain the file metadata mark ID corresponding with mail piece identifiers according to mail piece identifiers; The file metadata ID that acquiring unit can also obtain according to acquiring unit obtains the file metadata corresponding with file metadata ID; Second memory cell can store the memory space of account according to cloud file metadata being stored to non-storage file metadata.
Alternatively, as an embodiment, receiving element 410 can also receive the access request that Mail Clients sends, and access request is used for the part or all of data message of at least one file in the N number of file of request access.Now, cloud storage server can also comprise and searches unit.Search unit and can search the part or all of data message with at least one file in N number of file according to the access request of receiving element 410 reception; Transmitting element 440 can also send the part or all of data message of at least one file in N number of file to Mail Clients.
It should be noted that, cloud storage server 400 here embodies with the form of functional unit.Here term " unit " can refer to apply peculiar integrated circuit (ApplicationSpecificIntegratedCircuit, ASIC), electronic circuit, for performing the processor (such as share processor, proprietary processor or group processor etc.) of one or more software or firmware program and memory, merging the suitable assembly of the function described by logical circuit and/or other support.It will be understood by those skilled in the art that cloud storage server 400 may be used for performing each flow process corresponding with cloud storage server and/or step in said method embodiment, for avoiding repetition, not repeating them here.
Fig. 5 shows the schematic block diagram of the Mail Clients 500 of the embodiment of the present invention.Record the corresponding relation that cloud stores account and mail account in this Mail Clients 500, cloud storage account and mail account are respectively the account that user registers at cloud storage server and mail server.This Mail Clients 500 comprises receiving element 510, acquiring unit 520 and transmitting element 530.
Receiving element 510 can remainder in receiving target mail except the target annex of targeted mails, and the remainder of targeted mails comprises the mail head of targeted mails.
Acquiring unit 520 can obtain mail piece identifiers from the mail head of targeted mails.
Transmitting element 530 can send mail piece identifiers to cloud storage server and cloud stores account, so that cloud storage server stores account according to mail piece identifiers and cloud download target annex from mail server.
The embodiment of the present invention directly downloads target annex from mail server, thus does not need, through Mail Clients transfer target annex, can save memory space and the flow bandwidth of Mail Clients.
On the other hand, being stored in target annex on cloud storage server can permanent archival, can not lose.And only on cloud storage server, store this target annex a, the memory space of cloud storage server can be saved.
Alternatively, as an embodiment, acquiring unit 520 also for: obtain the operation of client user.Now, Mail Clients 500 can also comprise generation unit, can be used for generating the access request corresponding with operation according to operation, and access request is used for the part or all of data message of at least one file in N number of file of request access cloud storage server storage; Transmitting element 530 also can be used for sending access request to cloud storage server; Receiving element 510 also can be used for receiving the part or all of data message of at least one file in N number of file that cloud storage server sends according to access request.
It should be noted that, Mail Clients 500 here embodies with the form of functional unit.Here term " unit " can refer to apply peculiar integrated circuit (ApplicationSpecificIntegratedCircuit, ASIC), electronic circuit, for performing the processor (such as share processor, proprietary processor or group processor etc.) of one or more software or firmware program and memory, merging the suitable assembly of the function described by logical circuit and/or other support.It will be understood by those skilled in the art that Mail Clients 500 may be used for performing each flow process and/or step corresponding with Mail Clients in said method embodiment, for avoiding repetition, not repeating them here.
Fig. 6 shows the schematic block diagram of the mail server 600 of the embodiment of the present invention, and this mail server 600 comprises receiving element 610, authenticating unit 620 and transmitting element 630.
Receiving element 610 can receive the logging request of mail account.
Authenticating unit 620 can carry out login authentication according to logging request to described mail account.
When authenticating unit 620 is to the success of login authentication, receiving element 610 also can receive the download request that cloud storage server sends, and wherein, download request carries mail piece identifiers.
Transmitting element 630 can send the target annex corresponding with mail piece identifiers to cloud storage server.
The embodiment of the present invention by directly downloading target annex from mail server, thus does not need, through Mail Clients transfer target annex, can save memory space and the flow bandwidth of Mail Clients.
It should be noted that, mail server 600 here embodies with the form of functional unit.Here term " unit " can refer to apply peculiar integrated circuit (ApplicationSpecificIntegratedCircuit, ASIC), electronic circuit, for performing the processor (such as share processor, proprietary processor or group processor etc.) of one or more software or firmware program and memory, merging the suitable assembly of the function described by logical circuit and/or other support.It will be understood by those skilled in the art that mail server 600 may be used for performing each flow process and/or step corresponding with mail server in said method embodiment, for avoiding repetition, not repeating them here.
Fig. 7 is the schematic block diagram of the cloud storage server 700 of the embodiment of the present invention.Record the corresponding relation that cloud stores account and mail account in cloud storage server 700, cloud storage account and mail account are respectively the account that user registers at cloud storage server and mail server.Cloud storage server 700 comprises transmitter 710, receiver 720, processor 730, memory 740 and bus system 750.Wherein, transmitter 710, receiver 720, processor 730 are connected by bus system 750 with memory 740, this memory 740 is for storing computer instruction, the instruction that this processor 730 stores for performing this memory 740, send signal to control this transmitter 710, and control this receiver 720 Received signal strength.
Receiver 720 can receive mail piece identifiers and the cloud storing subscriber information of Mail Clients transmission, and mail piece identifiers is the mark of the targeted mails that Mail Clients receives.
Processor 730 can determine whether to store target annex corresponding to targeted mails according to mail piece identifiers; When determining not store target annex, determine that cloud stores mail account corresponding to account; Mail server is logged according to mail account.
Transmitter 710 can send mail piece identifiers to mail server.
Processor 730 also can download target annex according to mail piece identifiers from mail server; Set up the corresponding relation of target annex and mail piece identifiers.
The embodiment of the present invention is by first judging whether stored target annex in cloud storage server, and when not storing target annex in cloud storage server, directly download target annex from mail server, thus do not need, through Mail Clients transfer target annex, memory space and the flow bandwidth of Mail Clients can be saved.
On the other hand, being stored in target annex on cloud storage server can permanent archival, can not lose.And only on cloud storage server, store this target annex a, the memory space of cloud storage server can be saved.
Should be understood that cloud storage server 700 can be specially the cloud storage server 400 in above-described embodiment, and may be used for performing each step corresponding with cloud storage server and/or flow process in said method embodiment.Alternatively, this memory 740 can comprise read-only memory and random access memory, and provides instruction and data to processor.A part for memory can also comprise nonvolatile RAM.Such as, the information of all right storage device type of memory.This processor 730 may be used for the instruction stored in execute store, and when the instruction stored in this processor execute store, this processor is for performing each step and/or the flow process of said method embodiment.
Fig. 8 is the schematic block diagram of the Mail Clients 800 of the embodiment of the present invention.Record the corresponding relation that cloud stores account and mail account in this Mail Clients 800, cloud storage account and mail account are respectively the account that user registers at cloud storage server and mail server.This Mail Clients 800 comprises transmitter 810, receiver 820, processor 830, memory 840 and bus system 850.Wherein, transmitter 810, receiver 820, processor 830 are connected by bus system 850 with memory 840, this memory 840 is for storing computer instruction, the instruction that this processor 830 stores for performing this memory 840, send signal to control this transmitter 810, and control this receiver 820 Received signal strength.
Receiver 820 can remainder in receiving target mail except the target annex of targeted mails, and the remainder of targeted mails comprises the mail head of targeted mails.
Processor 830 can obtain mail piece identifiers from the mail head of targeted mails.
Transmitter 810 can send mail piece identifiers to cloud storage server and cloud stores account, so that cloud storage server stores account according to mail piece identifiers and cloud download target annex from mail server.
The embodiment of the present invention directly downloads target annex from mail server, thus does not need, through Mail Clients transfer target annex, can save memory space and the flow bandwidth of Mail Clients.
On the other hand, being stored in target annex on cloud storage server can permanent archival, can not lose.And only on cloud storage server, store this target annex a, the memory space of cloud storage server can be saved.
Should be understood that Mail Clients 800 can be specially the Mail Clients 500 in above-described embodiment, and may be used for performing each step and/or flow process corresponding with Mail Clients in said method embodiment.Alternatively, this memory 840 can comprise read-only memory and random access memory, and provides instruction and data to processor.A part for memory can also comprise nonvolatile RAM.Such as, the information of all right storage device type of memory.This processor 830 may be used for the instruction stored in execute store, and when the instruction stored in this processor execute store, this processor is for performing each step and/or the flow process of said method embodiment.
Fig. 9 is the schematic block diagram of the mail server 900 of the embodiment of the present invention.Mail server 900 comprises transmitter 910, receiver 920, processor 930, memory 940 and bus system 950.Wherein, transmitter 910, receiver 920, processor 930 are connected by bus system 950 with memory 940, this memory 940 is for storing computer instruction, the instruction that this processor 930 stores for performing this memory 940, send signal to control this transmitter 910, and control this receiver 920 Received signal strength.
Receiver 920 can receive the logging request of mail account.
Processor 930 can carry out login authentication according to logging request to described mail account.
When processor 930 is to the success of login authentication, receiver 920 also can receive the download request that cloud storage server sends, and wherein, download request carries mail piece identifiers.
Transmitter 910 can send the target annex corresponding with mail piece identifiers to cloud storage server.
The embodiment of the present invention by directly downloading target annex from mail server, thus does not need, through Mail Clients transfer target annex, can save memory space and the flow bandwidth of Mail Clients.
Should be understood that mail server 900 can be specially the mail server 600 in above-described embodiment, and may be used for performing each step and/or flow process corresponding with mail server in said method embodiment.Alternatively, this memory 940 can comprise read-only memory and random access memory, and provides instruction and data to processor.A part for memory can also comprise nonvolatile RAM.Such as, the information of all right storage device type of memory.This processor 930 may be used for the instruction stored in execute store, and when the instruction stored in this processor execute store, this processor is for performing each step and/or the flow process of said method embodiment.
Should understand, in embodiments of the present invention, this processor can be CPU (CentralProcessingUnit, CPU), this processor can also be other general processors, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), ready-made programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components etc.The processor etc. of general processor can be microprocessor or this processor also can be any routine.
In implementation procedure, each step of said method can be completed by the instruction of the integrated logic circuit of the hardware in processor or software form.Step in conjunction with the method disclosed in the embodiment of the present invention can directly be presented as that hardware processor is complete, or hardware in purpose processor and software module combination complete.Software module can be positioned at random asccess memory, flash memory, read-only memory, in the storage medium of this area maturations such as programmable read only memory or electrically erasable programmable memory, register.This storage medium is positioned at memory, the instruction in processor execute store, completes the step of said method in conjunction with its hardware.For avoiding repetition, be not described in detail here.
Should be understood that in embodiments of the present invention, " B corresponding to A " represents that B and A is associated, and can determine B according to A.But should also be understood that and determine B and do not mean that only to determine B according to A according to A, B can also be determined according to A and/or out of Memory.
Should be understood that term "and/or" herein, being only a kind of incidence relation describing affiliated partner, can there are three kinds of relations in expression, and such as, A and/or B, can represent: individualism A, exists A and B simultaneously, these three kinds of situations of individualism B.In addition, character "/" herein, general expression forward-backward correlation is to the relation liking a kind of "or".
Should understand, in various embodiments of the present invention, the size of the sequence number of above-mentioned each process does not also mean that the priority of execution sequence, and the execution sequence of each process should be determined with its function and internal logic, and should not form any restriction to the implementation process of the embodiment of the present invention.
Those of ordinary skill in the art can recognize, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the system of foregoing description, mobile terminal and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that disclosed system, mobile terminal and method can realize by another way.Such as, mobile terminal embodiment described above is only schematic, such as, the division of this unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of mobile terminal or unit or communication connection can be electrical, machinery or other form.
This or can may not be as the unit that separating component illustrates and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.
If this function using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part of the part that technical scheme of the present invention contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of each embodiment method of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (Read-OnlyMemory, ROM), random access memory (RandomAccessMemory, RAM), magnetic disc or CD etc. various can be program code stored medium.
More than should; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of this claim.

Claims (9)

1. file the method for Email attachment for one kind, be applied to cloud storage server, it is characterized in that, the corresponding relation that cloud stores account and mail account is recorded in described cloud storage server, described cloud storage account and described mail account are respectively the account that user registers at described cloud storage server and mail server, and described method comprises:
The mail piece identifiers and the described cloud that receive Mail Clients transmission store account, and described mail piece identifiers is the mark of the targeted mails that described Mail Clients receives;
Determine in described cloud storage server, whether to have stored target annex corresponding to described targeted mails according to described mail piece identifiers;
When determining not store described target annex in described cloud storage server, determine that described cloud stores described mail account corresponding to account;
Described mail server is logged according to described mail account;
Described mail piece identifiers is sent to described mail server;
From described mail server, described target annex is downloaded according to described mail piece identifiers;
Set up the corresponding relation of described target annex and described mail piece identifiers.
2. method according to claim 1, is characterized in that, described method also comprises:
According to the N number of file metadata of N number of file generated in described target annex and N number of file metadata mark ID, wherein, described N number of file and described N number of file metadata one_to_one corresponding, described N number of file metadata and described N number of file metadata ID one_to_one corresponding, N >=1;
Store described N number of file metadata ID and described N number of file metadata, wherein, described N number of file metadata ID and described mail piece identifiers are corresponding stored ground.
3. method according to claim 1, is characterized in that, described method also comprises:
When determining to have stored described target annex in described cloud storage server, obtaining the file metadata corresponding with described mail piece identifiers according to described mail piece identifiers and identifying ID;
The file metadata corresponding with described file metadata ID is obtained according to described file metadata ID;
Described file metadata is stored to the memory space that the described cloud not storing described file metadata stores account.
4. method according to claim 2, is characterized in that, described method also comprises:
Receive the access request that described Mail Clients sends, described access request is used for the part or all of data message of at least one file in N number of file described in request access;
The part or all of data message of at least one file in described N number of file is searched according to described access request;
The part or all of data message of at least one file in described N number of file is sent to described Mail Clients.
5. a cloud storage server, it is characterized in that, record the corresponding relation that cloud stores account and mail account in described cloud storage server, described cloud storage account and described mail account are respectively the account that user registers at described cloud storage server and mail server, comprising:
Receiving element, for receiving mail piece identifiers and the cloud storing subscriber information of Mail Clients transmission, described mail piece identifiers is the mark of the targeted mails that described Mail Clients receives;
Determining unit, stores target annex corresponding to described targeted mails for determining whether according to described mail piece identifiers;
Described determining unit also for, when determining not store described target annex, determine that described cloud stores described mail account corresponding to account;
Log in unit, for logging in described mail server according to described mail account;
Transmitting element, for sending described mail piece identifiers to described mail server;
Download unit, for downloading described target annex according to described mail piece identifiers from described mail server;
Set up unit, for setting up the corresponding relation of described target annex and described mail piece identifiers.
6. cloud storage server according to claim 5, is characterized in that, described cloud storage server also comprises:
Generation unit, for identifying ID according to the N number of file metadata of N number of file generated in described target annex and N number of file metadata, wherein, described N number of file and described N number of file metadata one_to_one corresponding, described N number of file metadata and described N number of file metadata ID one_to_one corresponding, N >=1;
First memory cell, for storing described N number of file metadata ID and described N number of file metadata, wherein, described N number of file metadata ID and described mail piece identifiers are corresponding stored ground.
7. cloud storage server according to claim 5, is characterized in that, described cloud storage server also comprises:
Acquiring unit, during for determining when determining unit to store described target annex, obtaining the file metadata corresponding with described mail piece identifiers according to described mail piece identifiers and identifying ID;
The described file metadata ID of described acquiring unit also for obtaining according to described acquiring unit obtains the file metadata corresponding with described file metadata ID;
Second memory cell, stores the memory space of account for described file metadata being stored to the described cloud not storing described file metadata.
8. cloud storage server according to claim 6, it is characterized in that, described receiving element also for: receive the access request that described Mail Clients sends, described access request is used for the part or all of data message of at least one file in N number of file described in request access;
Described cloud storage server also comprises searches unit, for searching the part or all of data message of at least one file in described N number of file according to described access request;
Described transmitting element is also for sending the part or all of data message of at least one file in described N number of file to described Mail Clients.
9. a cloud storage server, it is characterized in that, the corresponding relation that cloud stores account and mail account is recorded in described cloud storage server, described cloud storage account and described mail account are respectively the account that user registers at described cloud storage server and mail server, described cloud storage server comprises: transmitter, receiver, processor, memory and bus system, wherein, described receiver, described transmitter, described memory is connected by described bus system with described processor, described memory is for storing computer instruction, described processor is for running the method according to any one of described computer instruction enforcement of rights requirement 1 to 4.
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