CN103077196B - A kind of access method from public network WEB website to intranet data storehouse - Google Patents
A kind of access method from public network WEB website to intranet data storehouse Download PDFInfo
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- CN103077196B CN103077196B CN201210574594.8A CN201210574594A CN103077196B CN 103077196 B CN103077196 B CN 103077196B CN 201210574594 A CN201210574594 A CN 201210574594A CN 103077196 B CN103077196 B CN 103077196B
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Abstract
The invention discloses a kind of access method from public network WEB website to intranet data storehouse, feature is setting data library inquiry program in public network, database executive routine and the first buffer area, resident client program and the second buffer area are set in Intranet, HASH table is provided with in first buffer area, initiate to public network the webpage that public network is constantly opened in request by Intranet, download and uploading data, advantage is that method of the present invention instead of original public network and initiates request to Intranet, like this, the WEB server inwardly dynamic initiation connection of host of public network, this is that fire wall allowed, also be very safe, method of the present invention makes the enterprise WEB website in public network, does not even need building database, just can the data of real time access Intranet, and the field of these data and access limit are can be predefined, meanwhile, Intranet can set up fire wall completely, forbids internally being accessed by public network, also can not affect the access of public network user to intranet data.
Description
Technical field
The present invention relates to a kind of access method of site databases, especially relate to a kind of access method from public network WEB website to intranet data storehouse.
Background technology
At present, many enterprise customers establishing corporate intranet and database, but owing to not fixing public network (INTERNET net) IP address or WEB website cannot be issued in the intranet server of oneself for the purpose of safety.This type of enterprise generally adopts the mode such as hosting, fictitious host computer to build the WEB website of oneself.Because this WEB website is based upon in public network, if the data of enterprise in intranet data storehouse will be issued in WEB, the WEB server of public network or need to access corporate intranet, or carry out synchronous by corporate intranet timing with the site databases being positioned at public network.In general, the former user needs the public network IP address fixed to map intranet server, and there is Intranet can by serious risks such as malice access simultaneously; And the latter not only real-time be difficult to be guaranteed, also there is the problem of securities such as being maliciously tampered because data store at public network simultaneously.Current medium-sized and small enterprises adopt fictitious host computer mostly, hosting mode sets up WEB website at public network, and its Intranet is provided with fire wall mostly, therefore its Intranet cannot be accessed in the WEB server of public network, common WEB web page program also cannot directly access intranet data storehouse, so its public network website can not realize real-time synchronous with the data of corporate intranet.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of access method from public network WEB website to intranet data storehouse, the enterprise WEB website in public network is made not need building database just can the data of real time access Intranet, simultaneously, both can prevent Intranet from maliciously being accessed, also can not affect the access of public network user to intranet data.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of access method from public network WEB website to intranet data storehouse, setting data library inquiry program, database executive routine and the first buffer area in public network, resident client program and the second buffer area are set in Intranet, be provided with HASH table in the first described buffer area, specifically comprise the following steps:
1) user to access public net, opens webpage;
2) first webpage inquires about in the first described buffer area whether have the Query Result prestored in HASH table by described database search programs, if had, so this result is directly returned described database search programs, user sees object information in the public network page, if do not had, so described database search programs writes query note in the first described buffer area, and waits for, until return results or time-out;
3) in intranet server, described resident client program is run, continue the database executive routine of timer access public network server in the interval of 0.01 second ~ 0.1 second, after read the query note in the first described buffer area by database executive routine, resident client routine access intranet data storehouse;
4) after resident client program obtains intranet data storehouse access result, intranet data storehouse access result is formed record and is put in the second described buffer area;
5) when there is record in the second buffer area, this record is attached in the resident client program of accessing database executive routine as upload parameter;
6) the database executive routine in public network the upload parameter in resident client program stored in the first described buffer area;
7) database search programs described in obtains intranet data storehouse access result in the first described buffer area;
8) database search programs described in terminates to wait for, returns intranet data storehouse access result, and user sees intranet data storehouse access object information in the public network page.
Step 2) in the concrete steps of database search programs be:
2-1) read parameter: parameter comprises the time-out time of needs inquiry or the SQL statement performed and this statement, in seconds;
2-2) detect HASH table: the fast index function shown by HASH, detect whether within effective time, have corresponding result according to query statement, if had, directly return results;
2-3) detect buffer memory: namely whether the record number of current first buffer area is greater than dominant record number, in this way, then retrieval system is hurried, otherwise enters next step;
2-4) sequence number is set: namely current sequence number increases by 1;
2-5) stored in buffer memory: at the first buffer area stored in a record, comprising: this sequence number=current sequence number; Query time=current time; It is input parameter that time-out time is taken into account in inquiry in advance; Now caching record number increases by 1;
2-6) read circulation: enter a circulation, according to this sequence number, reading buffer memory, until read successfully or overtime, i.e. current time > query time+time-out time;
2-7) remove buffer memory: after reading success or time-out, first the caching record in the first buffer area is removed, now caching record number reduces 1;
2-8) return results: by time-out error or Query Result information return data library inquiry program.
In step 3), the concrete steps of database executive routine are:
3-1) read parameter: read comprise process terminate or not yet process resident client program last time that terminates of process last sequence number, represent this sequence number returned results and this Query Result returned;
3-2) write buffer memory: whether first judged result sequence number is present in the first buffer area, if there is no then next step is entered, if existence so just writes the first buffer area wait result and is read by database search programs, also the record of same queries statement in HASH table is done simultaneously and upgrade, comprise query time, Query Result and effective time;
3-3) read inquiry: the record reading the first buffer area according to current non-search sequence number, as not this sequence number, then judge whether this sequence number is greater than current sequence number, enter next step, otherwise again read the first buffer area after current non-search sequence number+1, until read successfully or exceed current sequence number, namely all records of current first buffer area run through all;
3-4) return results: when the record of the first buffer area is the record needing inquiry at present, return data library inquiry program, meanwhile, if there is result sequence number, also returns this result sequence number.
Resident client program in intranet server comprises master routine and database manipulation program, the concrete steps that master routine runs are: a thread of timing creation database running program, and record start-up time, after a thread starts, first the database executive routine of public network is accessed, after access completes, result is write the second buffer area, notify master routine simultaneously, master routine judges whether current time and the last interval starting thread time exceed timing, and then whether acknowledgement interval exceedes timing, if exceeded the thread that just establishment one is new again.
The concrete steps that database manipulation program is run are:
4-1) program starts;
SQL execution result 4-2) reading search sequence up-to-date in the first buffer area number and return at first;
4-3) access the database executive routine of public network webpage, and upload up-to-date search sequence number and execution result;
4-4) page access is complete, and in the second buffer area, the ID of minute book thread reads successfully, and judges that whether this page access is successful, is continue, otherwise terminates this thread;
4-5) as the page reads result sequence number, then empty the buffer memory relevant to this sequence number in the second buffer area;
4-6) judge whether the page reads query note, is, continues next step, otherwise terminate this thread;
4-7) search sequence read number is set to up-to-date search sequence number, and judges whether SQL statement meets pre-configured filter method, i.e. regular expression, be then by improper value stored in the second buffer area, otherwise accessing database, performs SQL statement;
4-8) synchronous wait SQL statement is finished, by result in xml form stored in the second buffer area;
4-9) terminate this thread.
Compared with prior art, the invention has the advantages that the essence of the method initiates request by Intranet to public network, original public network is replaced to initiate request to Intranet, like this, the WEB server inwardly dynamic initiation connection of host of public network, is by Intranet at the webpage constantly opening public network, downloads and uploading data, this is that fire wall allowed, and is also very safe; This method makes the enterprise WEB website in public network, does not even need building database, just can the data of real time access Intranet, and the field of these data and access limit are can be predefined; Meanwhile, Intranet can set up fire wall completely, forbids internally being accessed by public network, also can not affect the access of public network user to intranet data; The execution of this method Intranet access public network webpage and data base querying is dual asynchronous: after first page access, no matter whether data base querying performs just carry out clocked flip web page access behavior next time, namely asynchronous between page access and the execution of data base querying; It two is after data base querying performs SQL statement success, first result return cache, just result is returned to public network, namely return between execution result and reading SQL asynchronous to time web page access (reading new SQL statement) next time.By this design, ensure that public network can perform to Intranet by concurrent multiple database SQL statement, avoid to greatest extent due to database or the congested and generation that causes system busy for a long time of the common short-term of network.
Accompanying drawing explanation
Fig. 1 is the topological structure schematic diagram of the inventive method;
Fig. 2 is the process flow diagram of the inventive method;
Fig. 3 is the process flow diagram of database search programs in the inventive method;
Fig. 4 is the process flow diagram of database executive routine in the inventive method;
Fig. 5 is the process flow diagram of the master routine of resident client program in the inventive method;
Fig. 6 is the process flow diagram of the database manipulation program of resident client program in the inventive method.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in the figure, a kind of access method from public network WEB website to intranet data storehouse, setting data library inquiry program, database executive routine and the first buffer area in public network, resident client program and the second buffer area are set in Intranet, be provided with HASH table in first buffer area, specifically comprise the following steps:
1) user to access public net, opens webpage;
2) first webpage inquires about in the first buffer area whether have the Query Result prestored in HASH table by database search programs, if had, so direct for this result return data library inquiry program, user sees object information in the public network page, if no, so database search programs writes query note in the first buffer area, and waits for, until return results or time-out, concrete steps are:
2-1) read parameter: parameter comprises the time-out time of needs inquiry or the SQL statement performed and this statement, in seconds;
2-2) detect HASH table: the fast index function shown by HASH, detect whether within effective time, have corresponding result according to query statement, if had, directly return results;
2-3) detect buffer memory: namely whether the record number of current first buffer area is greater than dominant record number, in this way, then retrieval system is hurried, otherwise enters next step;
2-4) sequence number is set: namely current sequence number increases by 1;
2-5) stored in buffer memory: at the first buffer area stored in a record, comprising: this sequence number=current sequence number; Query time=current time; It is input parameter that time-out time is taken into account in inquiry in advance; Now caching record number increases by 1;
2-6) read circulation: enter a circulation, according to this sequence number, reading buffer memory, until read successfully or overtime, i.e. current time > query time+time-out time;
2-7) remove buffer memory: after reading success or time-out, first the caching record in the first buffer area is removed, now caching record number reduces 1;
2-8) return results: by time-out error or Query Result information return data library inquiry program;
3) after intranet server starts, the resident client program be arranged in intranet server is run automatically, continue the database executive routine of timer access public network server in the interval of 0.01 second ~ 0.1 second, after reading the query note in the first buffer area by database executive routine, resident client routine access intranet data storehouse; The concrete steps of database executive routine are:
3-1) read parameter: read comprise process terminate or not yet process resident client program last time that terminates of process last sequence number, represent this sequence number returned results and this Query Result returned;
3-2) write buffer memory: whether first judged result sequence number is present in the first buffer area, if there is no then next step is entered, if existence so just writes the first buffer area wait result and is read by database search programs, also the record of same queries statement in HASH table is done simultaneously and upgrade, comprise query time, Query Result and effective time;
3-3) read inquiry: the record reading the first buffer area according to current non-search sequence number, as not this sequence number, then judge whether this sequence number is greater than current sequence number, enter next step, otherwise again read the first buffer area after current non-search sequence number+1, until read successfully or exceed current sequence number, namely all records of current first buffer area run through all;
3-4) return results: when the record of the first buffer area is the record needing inquiry at present, return data library inquiry program, meanwhile, if there is result sequence number, also returns this result sequence number;
4) after resident client program obtains intranet data storehouse access result, intranet data storehouse access result is formed record and is put in the second described buffer area;
5) when there is record in the second buffer area, this record is attached in the resident client program of accessing database executive routine as upload parameter;
6) the database executive routine in public network the upload parameter in resident client program stored in the first described buffer area;
7) database search programs described in obtains intranet data storehouse access result in the first described buffer area;
8) database search programs described in terminates to wait for, returns intranet data storehouse access result, and user sees intranet data storehouse access object information in the public network page.
Resident client program in intranet server comprises master routine and database manipulation program, the concrete steps that master routine runs are: a thread of timing creation database running program, and record start-up time, after a thread starts, first the database executive routine of public network is accessed, write second buffer area after access completes, master routine learns this event (needing to describe clearer and more definite) here from the second buffer area, and then whether acknowledgement interval exceedes timing, if exceeded the thread that just establishment one is new again.
The concrete steps that database manipulation program is run are:
4-1) program starts;
SQL execution result 4-2) reading search sequence up-to-date in the first buffer area number and return at first;
4-3) access the database executive routine of public network webpage, and upload up-to-date search sequence number and execution result;
4-4) page access is complete, and in the second buffer area, the ID of minute book thread reads successfully, and judges that whether this page access is successful, is continue, otherwise terminates this thread;
4-5) as the page reads result sequence number, then empty the buffer memory relevant to this sequence number in the second buffer area;
4-6) judge whether the page reads query note, is, continues next step, otherwise terminate this thread;
4-7) search sequence read number is set to up-to-date search sequence number, and judges whether SQL statement meets filter method, i.e. regular expression, be then by improper value stored in the second buffer area, otherwise accessing database, performs SQL statement;
4-8) synchronous wait SQL statement is finished, by result in xml form stored in the second buffer area;
4-9) terminate this thread.
Claims (4)
1. one kind from public network WEB website to the access method in intranet data storehouse, it is characterized in that setting data library inquiry program in public network, database executive routine and the first buffer area, resident client program and the second buffer area are set in Intranet, resident client program in intranet server comprises master routine and database manipulation program, the concrete steps that master routine runs are: a thread of timing creation database running program, and record start-up time, after a thread starts, first the database executive routine of public network is accessed, after access completes, result is write the second buffer area, notify master routine simultaneously, master routine judges whether current time and the last interval starting thread time exceed timing, if exceeded the thread that just establishment one is new again, HASH table is provided with in the first described buffer area, specifically comprise the following steps:
1) user to access public net, opens webpage;
2) first webpage inquires about in the first described buffer area whether have the Query Result prestored in HASH table by described database search programs, if had, so this result is directly returned described database search programs, user sees object information in the public network page, if do not had, so described database search programs writes query note in the first described buffer area, and waits for, until return results or time-out;
3) in intranet server, described resident client program is run, continue the database executive routine of timer access public network server in the interval of 0.01 second ~ 0.1 second, after read the query note in the first described buffer area by database executive routine, resident client routine access intranet data storehouse;
4) after resident client program obtains intranet data storehouse access result, intranet data storehouse access result is formed record and is put in the second described buffer area;
5) when there is record in the second buffer area, this record is attached in the resident client program of accessing database executive routine as upload parameter;
6) the database executive routine in public network the upload parameter in resident client program stored in the first described buffer area;
7) database search programs described in obtains intranet data storehouse access result in the first described buffer area;
8) database search programs described in terminates to wait for, returns intranet data storehouse access result, and user sees intranet data storehouse access object information in the public network page.
2. a kind of from public network WEB website to the access method in intranet data storehouse as claimed in claim 1, it is characterized in that step 2) in the concrete steps of database search programs be:
2-1) read parameter: parameter comprises the time-out time of needs inquiry or the SQL statement performed and this statement, in seconds;
2-2) detect HASH table: the fast index function shown by HASH, detect whether within effective time, have corresponding result according to query statement, if had, directly return results;
2-3) detect buffer memory: namely whether the record number of current first buffer area is greater than dominant record number, in this way, then retrieval system is hurried, otherwise enters next step;
2-4) sequence number is set: namely current sequence number increases by 1;
2-5) stored in buffer memory: at the first buffer area stored in a record, comprising: this sequence number=current sequence number; Query time=current time; It is input parameter that time-out time is taken into account in inquiry in advance; Now caching record number increases by 1;
2-6) read circulation: enter a circulation, according to this sequence number, read the first buffer area buffer memory, until read successfully or overtime, i.e. current time > query time+time-out time;
2-7) remove buffer memory: after reading success or time-out, first the caching record in the first buffer area is removed, now caching record number reduces 1;
2-8) return results: by time-out error or Query Result information return data library inquiry program.
3. a kind of from public network WEB website to the access method in intranet data storehouse as claimed in claim 2, it is characterized in that step 3) in the concrete steps of database executive routine be:
3-1) read parameter: read comprise process terminate or not yet process resident client program last time that terminates of process last sequence number, represent this sequence number returned results and this Query Result returned;
3-2) write buffer memory: whether first judged result sequence number is present in the first buffer area, if there is no then next step is entered, if existence so just writes the first buffer area wait result and is read by database search programs, also the record of same queries statement in HASH table is done simultaneously and upgrade, comprise query time, Query Result and effective time;
3-3) read inquiry: the record reading the first buffer area according to current non-search sequence number, as not this sequence number, then judge whether this sequence number is greater than current sequence number, enter next step, otherwise again read the first buffer area after current non-search sequence number+1, until read successfully or exceed current sequence number, namely all records of current first buffer area run through all;
3-4) return results: when the record of the first buffer area is the record needing inquiry at present, return data library inquiry program, meanwhile, if there is result sequence number, also returns this result sequence number.
4. a kind of access method from public network WEB website to intranet data storehouse as claimed in claim 1, is characterized in that the concrete steps that database manipulation program is run are:
4-1) program starts;
SQL execution result 4-2) reading search sequence up-to-date in the first buffer area number and return at first;
4-3) access the database executive routine of public network webpage, and upload up-to-date search sequence number and execution result;
4-4) page access is complete, and in the second buffer area, the ID of minute book thread reads successfully, and judges that whether this page access is successful, is continue, otherwise terminates this thread;
4-5) as the page reads result sequence number, then empty the buffer memory relevant to this sequence number in the second buffer area;
4-6) judge whether the page reads query note, is, continues next step, otherwise terminate this thread;
4-7) search sequence read number is set to up-to-date search sequence number, and judges whether SQL statement meets pre-configured filter method, i.e. regular expression, be then by improper value stored in the second buffer area, otherwise accessing database, performs SQL statement;
4-8) synchronous wait SQL statement is finished, by result in xml form stored in the second buffer area;
4-9) terminate this thread.
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| CN201210574594.8A CN103077196B (en) | 2012-12-25 | 2012-12-25 | A kind of access method from public network WEB website to intranet data storehouse |
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| CN103455603B (en) * | 2013-09-03 | 2016-08-17 | 小米科技有限责任公司 | Web page contents caching, webpage loading method, device and terminal unit |
| CN106453336B (en) * | 2016-10-20 | 2019-12-10 | 杭州孚嘉科技有限公司 | Method for internal network to actively provide external network host calling service |
| CN108932329B (en) * | 2018-07-04 | 2021-05-25 | 北京奇安信科技有限公司 | Data query processing method and device |
| CN109977170A (en) * | 2019-03-20 | 2019-07-05 | 南威软件股份有限公司 | The synchronous method and system of network data inside and outside a kind of government affairs |
| CN113572807A (en) * | 2021-06-03 | 2021-10-29 | 中企云链（北京）金融信息服务有限公司 | Data cache optimization method for front-end interface |
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