CN105224510A - A kind of conversion method of document format file - Google Patents
A kind of conversion method of document format file Download PDFInfo
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- CN105224510A CN105224510A CN201510602834.4A CN201510602834A CN105224510A CN 105224510 A CN105224510 A CN 105224510A CN 201510602834 A CN201510602834 A CN 201510602834A CN 105224510 A CN105224510 A CN 105224510A
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Abstract
The present invention proposes a kind of conversion method of document format file, comprises the following steps: to obtain the file needing to carry out format conversion; Whether the form judging described file is document format; Initialization process is carried out to described document format file; Described document format file is sent to document subject feature vector node; Format conversion processing is carried out to described document format file.The conversion method of the document format file that the present invention proposes, can utilize P2P node to carry out document format file transform, effectively improves the speed of file layout conversion, and reduces the processing load of server and user terminal.
Description
Technical field
The present invention relates to computer documents process field, and in particular to a kind of conversion method of document format file.
Background technology
Along with the development of internet, utilize network to carry out live or program request and become a kind of trend gradually, slowly be dissolved in daily life, form focus in work, study and the various aspects such as amusement, be video conference, that online education or Web TV, video website are all applied is more and more extensive.Particularly under the universal overall background of computing machine, intelligent mobile terminal and WIFI, 3G, 4G wireless network, user to watch activity that is live or program request online by computing machine or intelligent mobile terminal equipment and user will be made to obtain relevent information become more convenient in any place having network to connect.The activity such as online education, video conference is able to present to final user preferably by multimedia form by live or order program service.
The application such as existing online education, video conference often can use interactive electronic blackboard as demo platform; very important effect has been served in raising quality of presentation and efficiency; in interactive electronic blackboard, the use of shared document is more and more frequent; presentation file (as office document, PDF document, multimedia file etc.) can be uploaded to demo platform and open by user, can carry out annotating and commenting on and the operation such as explanation in presentation process.When the presentation file of different-format is uploaded to demo platform, the interactive demonstration file layout that it is supported can be converted to, such as, be converted to swf formatted file.
Described file layout transfer process is usually put on user terminal or server and completes, when file layout conversion is carried out at user terminal, ultimate principle due to transcoding is first decoded to file, then encode by the coded system of the form that will change, need to carry out a large amount of data processing work, thus need to carry out the longer time, the home computer general for cpu performance or intelligent mobile terminal equipment, burden is heavier, conversion efficiency is lower, relatively large file is when carrying out format conversion, wait for that the time that format conversion completes becomes and cannot stand, the overlong time of file layout conversion can make Consumer's Experience poor.And when file layout conversion is carried out on the server, the user terminal of serving due to it is more, and the task of carrying out file layout conversion also can be more simultaneously simultaneously, this can cause larger burden to server, thus affects providing of other services.
Peer-to-peer network is emerging network technology recent years, relative to traditional C/S model, the feature of a P2P pattern highly significant be exactly node without the need to Dependency Set Chinese style server resource, each node can directly communicate.P2P is the abbreviation of peer to peer connection peertopeer pattern.P2P technology be a kind of between different terminals user, directly exchange the technology of data or service without trunking.It has broken traditional Client/Server pattern, and in a peer-to-peer network, the status of each node is identical, possesses client and server dual nature, can simultaneously as service user and ISP.The core of P2P utilizes user resources, carries out file transfer by Peer, and this is different from traditional client server computation model completely.P2P, by the design of " decentralization " and multicast communication mechanism, achieves not reliance server and swap file fast.
How in Appropriate application P2P network, the idling-resource of subscriber terminal equipment carries out file layout conversion, is technical matters solved by the invention.
Summary of the invention
The present invention proposes a kind of conversion method of document format file, and P2P node can be utilized to carry out document format file transform, effectively improves the speed of file layout conversion, and reduces the processing load of server and user terminal.
In order to achieve the above object, the present invention proposes a kind of conversion method of document format file, comprises the following steps:
Obtain and need the file carrying out format conversion;
Whether the form judging described file is document format;
Initialization process is carried out to described document format file;
Described document format file is sent to document subject feature vector node;
Format conversion processing is carried out to described document format file.
Further, described document format determination methods is for judge according to file suffixes name.
Further, when described file is multimedia form, sends it to multimedia switching node and carry out format conversion.
Further, the initialization process of described document format file for judge whether described file is encrypt file or illegal file, and calculates the number of pages of described document format file.
Further, when the number of pages of described document format file is 0, empty file is labeled as and announcement server.
Further, described document subject feature vector node comprise without PPT file transform subtask the first document subject feature vector node and have the second document subject feature vector node of PPT file transform subtask.
Further, when the total page number of described document format file is less than described first document subject feature vector node total number, every one page of described document format file is distributed to described each first document subject feature vector node successively according to node order.
Further, when the total page number of described document format file is greater than described first document subject feature vector node total number, when meeting the condition of (L1*2+L2) >=P simultaneously, two pages of document format files are distributed successively according to node order by described each first document subject feature vector node, described each second document subject feature vector node distributes one page document format file successively according to node order, and the conversion subtask of each first document subject feature vector node described in priority allocation, wherein L1 represents the first document subject feature vector node total number, L2 represents the second document subject feature vector node total number, P represents the total page number of document format file.
Further, when the total page number of described document format file is greater than described first document subject feature vector node total number, when described second document subject feature vector number of nodes is 0 simultaneously, the total page number of described document format file is averagely allocated to described each first document subject feature vector node total number.
Further, when the total page number of described document format file is greater than described first document subject feature vector node total number, meet the condition of (L1*2+L2) < P simultaneously, and when the second document subject feature vector number of nodes is not 0, each peer distribution 2n page file in described first document subject feature vector node, each peer distribution n page file in described second document subject feature vector node, remaining number of pages distributes to the first document subject feature vector node successively according to node order, if also have unnecessary number of pages, distribute to the second document subject feature vector node successively according to node order, wherein L1 represents the first document subject feature vector node total number, L2 represents the second document subject feature vector node total number, P represents the total page number of document format file.
Further, described format conversion processing is carried out for being SWF formatted file or html5 formatted file by described document format file transform to document format file.
Further, described document subject feature vector node is the node server in P2P network.
Further, described document subject feature vector node is the server or virtual machine disposed in advance.
The present invention proposes a kind of conversion method of document format file, by the conversion subtask needing the document files carrying out format conversion to split into each single page, according to the quantity of P2P node and the total page number of state and document files, every page of conversion subtask reasonable distribution is carried out format conversion to P2P node.The conversion method of the shelves formatted file that the present invention proposes, P2P node every one page to document format file is utilized to carry out format conversion, by changing the reasonable distribution of subtask, the efficiency of effective raising file layout conversion, and avoid and adopt server or user terminal to carry out file layout conversion, reduce the processing load of server or user terminal.
Accompanying drawing explanation
Figure 1 shows that the conversion method process flow diagram of the document format file of present pre-ferred embodiments.
Embodiment
Provide the specific embodiment of the present invention below in conjunction with accompanying drawing, but the invention is not restricted to following embodiment.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only for object that is convenient, the aid illustration embodiment of the present invention lucidly.
Please refer to Fig. 1, Figure 1 shows that the conversion method process flow diagram of the document format file of present pre-ferred embodiments.The present invention proposes a kind of conversion method of document format file, comprises the following steps:
Step S100: obtain and need the file carrying out format conversion;
Step S200: whether the form judging described file is document format;
Step S300: initialization process is carried out to described document format file;
Step S400: described document format file is sent to document subject feature vector node;
Step S500: format conversion processing is carried out to described document format file.
According to present pre-ferred embodiments, described document format determination methods is for judge according to file suffixes name.The suffix name of described document format file comprises the file suffixes name corresponding to document files that ppt file, word file, excel file, pdf file and system are supported.When the suffix name of file belong to above-mentioned support document files suffix name one of them time, judge that it is document format file.Such as, when file suffixes is called .doc or .docx, judge that it is word file.
Further, when described file is multimedia form, sends it to multimedia switching node and carry out format conversion.According to the suffix name of file, when there is the suffix name of picture format or audio frequency and video form, judge that it belongs to multimedia form file, such as when the suffix of described file is called JPG, GIF or BMP, judge that it is picture format file, when the suffix of described file is called MP3, MP4 or ASF, judge that it is audio frequency and video formatted file.In addition, when the suffix name of described file does not belong to document format or the multimedia form of system support, judge that it is illegal file and announcement server.
According to present pre-ferred embodiments, the initialization process of described document format file for judge whether described file is encrypt file or illegal file, and calculates the number of pages of described document format file.When the number of pages of described document format file is 0, be labeled as empty file and announcement server.Describedly judging file whether to be illegal file be to judge that whether corresponding with its suffix name file layout file layout be consistent, judging that it is illegal file and announcement server when there is inconsistent situation.When judging that described file is encrypt file, same announcement server cannot process.
According to present pre-ferred embodiments, described document subject feature vector node comprise without PPT file transform subtask the first document subject feature vector node and have the second document subject feature vector node of PPT file transform subtask.Because the processing load of PPT file layout convert task to server is larger, slewing rate is slower, PPT file transform subtask whether has been had to be divided into the first document subject feature vector node and the second document subject feature vector node according to P2P node server, the the first document subject feature vector peer distribution conversion subtask giving comparatively idle rest processing capacity higher so that preferential, and the second document subject feature vector node with PPT conversion subtask is tried one's best regardless of or divides new conversion subtask less, to reduce the processing latency of new conversion subtask, thus raising conversion efficiency.
Described document file format conversion subtask according to the quantitative relation of file total page number, the first document subject feature vector node and the second document subject feature vector node, and is distributed according to following principle:
When the total page number of described document format file is less than described first document subject feature vector node total number, every one page of described document format file is distributed to described each first document subject feature vector node successively according to node order.In this case, because the first document subject feature vector node is more, the second document subject feature vector node can not be distributed in conversion subtask, and the posterior first document subject feature vector node that sorts also may distribute less than conversion subtask, processed the document format conversion subtask of every one page by the first document subject feature vector node that comparatively idle rest processing capacity is higher, can conversion efficiency be improved, accelerate slewing rate, reduce period of reservation of number, promote Consumer's Experience.
When the total page number of described document format file is greater than described first document subject feature vector node total number, when meeting the condition of (L1*2+L2) >=P simultaneously, two pages of document format files are distributed successively according to node order by described each first document subject feature vector node, described each second document subject feature vector node distributes one page document format file successively according to node order, and the conversion subtask of each first document subject feature vector node described in priority allocation, wherein L1 represents the first document subject feature vector node total number, L2 represents the second document subject feature vector node total number, P represents the total page number of document format file.In this case, preferential to each first document subject feature vector peer distribution two page file conversion subtask, residue number of pages distributes to the second document subject feature vector node, and each second document subject feature vector node only distributes one page conversion subtask.Task matching carries out according to node order, therefore the second document subject feature vector node comparatively that sorts may can not distribute conversion subtask, simultaneously when the first document subject feature vector number of nodes is more, all may need not distribute conversion subtask by second switching node, the the first document subject feature vector node comparatively that even sorts also need not distribute conversion subtask, when occurring that total page number is recto, a follow-up first document subject feature vector node only distributes one page conversion subtask, for example, be 49 pages when needing to carry out the file total page number that document format changes, the quantity of the first document subject feature vector node is 30, the data of the second document subject feature vector node are 10, change subtask to distribute according to following principle: sort into first 24 the first document subject feature vector node according to node order distribute successively 2 pages conversion subtasks, 25th the first document subject feature vector peer distribution, 1 page of conversion subtask, all the other first document subject feature vector nodes and the second document subject feature vector node do not distribute conversion subtask.
When the total page number of described document format file is greater than described first document subject feature vector node total number, when described second document subject feature vector number of nodes is 0 simultaneously, the total page number of described document format file is averagely allocated to described each first document subject feature vector node total number.In this case, whole node is all the first document subject feature vector node, by the total page number of document format file divided by node total number, if when there is the situation that cannot divide exactly, the mode process given up after adopting radix point, such as when document files total page number is 100 pages, first document subject feature vector node total number is 30, second document subject feature vector number of nodes is 0, calculate 100/30=3.33, automatically 3 are calculated as by 3.33, namely first each node distributes 3 pages of conversion subtasks, therefore first by each first document subject feature vector peer distribution 3 pages conversion subtask, front 10 the first document subject feature vector nodes are distributed to successively according to node order in remaining 10 pages of conversion subtasks.
When the total page number of described document format file is greater than described first document subject feature vector node total number, meet the condition of (L1*2+L2) < P simultaneously, and when the second document subject feature vector number of nodes is not 0, each peer distribution 2n page file in described first document subject feature vector node, each peer distribution n page file in described second document subject feature vector node, remaining number of pages distributes to the first document subject feature vector node successively according to node order, if also have unnecessary number of pages, distribute to the second document subject feature vector node successively according to node order, wherein L1 represents the first document subject feature vector node total number, L2 represents the second document subject feature vector node total number, P represents the total page number of document format file.In this case, to the document files total page number carrying out format conversion be needed divided by (L1*2+L2), distribute after result of calculation being given up radix point, for example, be 110 pages when needing to carry out the file total page number that document format changes, first document subject feature vector number of nodes is 20, second document subject feature vector node is 10, calculate 110/50=2.2, get n=2, namely first each first document subject feature vector node distributes 4 pages of conversion subtasks, first each second document subject feature vector node distributes 2 pages of conversion subtasks, remain 10 pages of conversion subtasks and distribute to front ten the first document subject feature vector nodes successively according to node order.
When the document subject feature vector node being assigned conversion subtask leaves, take out whole conversion subtasks that it is assigned with, then all document subject feature vector nodes are traveled through, each conversion subtask is distributed to the current node server not changing subtask in order successively process, if current all document subject feature vector nodes have conversion subtask in processes, then the most front document subject feature vector node of sequence is distributed in first conversion subtask, again travel through all document subject feature vector nodes afterwards, distribution second conversion subtask is continued according to above-mentioned rule, until the conversion subtask of all taking-ups is all assigned.
Described document subject feature vector node is the node server in P2P network.Simultaneously, described document subject feature vector node server also can adopt the multiple servers oneself disposed or virtual machine to process, described multiple servers or virtual machine composition server cluster carry out distribution processor to file layout conversion subtask, and the server that service provider adopts oneself to dispose or virtual machine can strengthen the stability of Transformation Service.
According to present pre-ferred embodiments, described format conversion processing is carried out for being SWF formatted file or html5 formatted file by described document format file transform to document format file.
SWF is a kind of Flash animation file based on vector, generally creates with FLASH software and generates SWF file layout, also by corresponding software, the type files such as doc, ppt, PDF can be converted to SWF form.SWF formatted file is widely used in and creates attracting application program, and they comprise abundant video, sound, figure and animation.Original contents can be created or import them from other Adobe application program (as Photoshop or Illustrator) in Flash, the simple animation of rapid Design, and use AdobeAcitonScript3.0 to develop senior interactive item.Designer and developer can use it to create the content of PowerPoint, application program and other permission user interactions.Flash can comprise simple animation, video content, complicated PowerPoint and application program and any content between them.Designed by SWF file layout, the application such as online education, video conference can realize the interpolation of user interaction contents, thus reaches more directly perceived, lively and vivid effect.In present pre-ferred embodiments, iSpring software is adopted to carry out document file format conversion, iSpring is a interactive courseware tools, like a cork presentation file can be added sound, video, test question, mutual etc., a key is converted to the Flash film of SWF file layout simultaneously, will retain original visual and animation effect while conversion.
HTML5 is the HTML Standard Edition for replacing HTML4.01 and the XHTML1.0 standard formulated for 1999, is still in developing stage now, but some HTML5 technology supported by most of browser.HTML5 has two major features: first, enhances the performance performance of Web page.Secondly, the function of the Web application such as local data base has been added.Broad sense touch upon HTML5 time, actually refer to a set of technical combinations comprising HTML, CSS and javascript.It wishes can reduce browser for the rich network english teaching (plug-in-basedrichinternetapplication needing plug-in unit, RIA), as AdobeFlash, MicrosoftSilverlight, with the demand of OracleJavaFX, and more multipotency is provided effectively to strengthen the regular set of network application.The particularly Web-page Multi-media characteristic of HTML, the multimedia functions such as Audio, Video of its supported web page end, the APPS carried with website, camera, video/audio function brings out the best in each other, and it has support many equipment, cross-platform and adaptive advantage simultaneously.In present pre-ferred embodiments, iSpring software can be adopted equally to carry out document file format conversion, become HTML5 form to demonstrate document format file transform.
After all document subject feature vector nodes complete the process of format conversion subtask, all transformation results are collected and are merged into a presentation file according to parent page order by server, presentation file stores and is used as follow-up demonstration use by server, so far completes the format conversion process of whole document files.
In sum, the conversion method of the document format file that the present invention proposes, by the conversion subtask needing the document files carrying out format conversion to split into each single page, according to the quantity of P2P node and the total page number of state and document files, every page of conversion subtask reasonable distribution is carried out format conversion to P2P node.The conversion method of the shelves formatted file that the present invention proposes, P2P node every one page to document format file is utilized to carry out format conversion, by changing the reasonable distribution of subtask, the efficiency of effective raising file layout conversion, and avoid and adopt server or user terminal to carry out file layout conversion, reduce the processing load of server or user terminal.
Although the present invention with preferred embodiment disclose as above, so itself and be not used to limit the present invention.Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion depending on those as defined in claim.
Claims (13)
1. a conversion method for document format file, is characterized in that, comprises the following steps:
Obtain and need the file carrying out format conversion;
Whether the form judging described file is document format;
Initialization process is carried out to described document format file;
Described document format file is sent to document subject feature vector node;
Format conversion processing is carried out to described document format file.
2. the conversion method of document format file according to claim 1, is characterized in that, described document format determination methods is for judge according to file suffixes name.
3. the conversion method of document format file according to claim 1, is characterized in that, when described file is multimedia form, sends it to multimedia switching node and carries out format conversion.
4. the conversion method of document format file according to claim 1, is characterized in that, the initialization process of described document format file for judge whether described file is encrypt file or illegal file, and calculates the number of pages of described document format file.
5. the conversion method of document format file according to claim 4, is characterized in that, when the number of pages of described document format file is 0, is labeled as empty file and announcement server.
6. the conversion method of document format file according to claim 1, is characterized in that, described document subject feature vector node comprise without PPT file transform subtask the first document subject feature vector node and have the second document subject feature vector node of PPT file transform subtask.
7. the conversion method of document format file according to claim 6, it is characterized in that, when the total page number of described document format file is less than described first document subject feature vector node total number, every one page of described document format file is distributed to described each first document subject feature vector node successively according to node order.
8. the conversion method of document format file according to claim 6, it is characterized in that, when the total page number of described document format file is greater than described first document subject feature vector node total number, when meeting the condition of (L1*2+L2) >=P simultaneously, two pages of document format files are distributed successively according to node order by described each first document subject feature vector node, described each second document subject feature vector node distributes one page document format file successively according to node order, and the conversion subtask of each first document subject feature vector node described in priority allocation, wherein L1 represents the first document subject feature vector node total number, L2 represents the second document subject feature vector node total number, P represents the total page number of document format file.
9. the conversion method of document format file according to claim 6, it is characterized in that, when the total page number of described document format file is greater than described first document subject feature vector node total number, when described second document subject feature vector number of nodes is 0 simultaneously, the total page number of described document format file is averagely allocated to described each first document subject feature vector node total number.
10. the conversion method of document format file according to claim 6, it is characterized in that, when the total page number of described document format file is greater than described first document subject feature vector node total number, meet the condition of (L1*2+L2) < P simultaneously, and when the second document subject feature vector number of nodes is not 0, each peer distribution 2n page file in described first document subject feature vector node, each peer distribution n page file in described second document subject feature vector node, remaining number of pages distributes to the first document subject feature vector node successively according to node order, if also have unnecessary number of pages, distribute to the second document subject feature vector node successively according to node order, wherein L1 represents the first document subject feature vector node total number, L2 represents the second document subject feature vector node total number, P represents the total page number of document format file.
The conversion method of 11. document format files according to claim 1, is characterized in that, describedly carries out format conversion processing for being SWF formatted file or html5 formatted file by described document format file transform to document format file.
The conversion method of 12. document format files according to claim 1, is characterized in that, described document subject feature vector node is the node server in P2P network.
The conversion method of 13. document format files according to claim 1, is characterized in that, described document subject feature vector node is the server or virtual machine disposed in advance.
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| CN113704214A (en) * | 2021-08-27 | 2021-11-26 | 北京市律典通科技有限公司 | Electronic file type conversion method and device and computer equipment |
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