CN101957842B - Webpage cache control method, device and system based on WebKit browser - Google Patents
Webpage cache control method, device and system based on WebKit browser Download PDFInfo
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- CN101957842B CN101957842B CN2010102836927A CN201010283692A CN101957842B CN 101957842 B CN101957842 B CN 101957842B CN 2010102836927 A CN2010102836927 A CN 2010102836927A CN 201010283692 A CN201010283692 A CN 201010283692A CN 101957842 B CN101957842 B CN 101957842B
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Abstract
The invention discloses a webpage cache control method, device and system based on a WebKit browser, aiming to overcome the boundedness on webpage cache control by the original WebKit browser. The method comprises: based on the URL of a current webpage, obtaining the current webpage; when determining the http-equiv attribute of a meta label in the current webpage source code as a cache control keyword, analyzing the meta label to obtain cache time; transferring the URL address and the cache time of the current webpage to the cache management module of a Java layer; and indicating the cache management module to carry out webpage cache processing. The method causes the WebKit browser to support to adopt the http-equiv attribute of a meta label to carry out webpage cache control, thus overcoming the boundedness on webpage cache control by the WebKit browser. The invention discloses a webpage cache control device and system based on the WebKit browser.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of webpage buffer control method, Apparatus and system based on Android platform WebKit browser.
Background technology
Lifting along with development of Communication Technique and network speed; Mobile phone users has been not content with simple WAP, and (hope can be as on PC, browsing WWW (World Wide Web for Wireless Application Protocol, WAP) network; WWW); This can support that with regard to the inevitable requirement browser webpage development of current popular is technological, for example, and technology such as Javascript, SVG, RSS.But, consider the restriction of mobile communication bandwidth, need portable terminal can support the WAP network again.
Android is based on the mobile phone operating system of increasing income of Linux platform; The Android platform is made up of operating system, middleware, user interface and application software; The bottom of platform is the basis with the linux kernel of C language development; Basic function only is provided, and the middle layer of platform comprises function library and virtual machine, and the upper strata of platform is various application software.At the inner integrated global function browser of Android platform, can support WAP net and WWW simultaneously based on the WebKit kernel of increasing income.
Control mainly contains two kinds of processing modes to server end for the webpage buffer memory; A kind of is in the Http of webpage source code response header, to realize the control of webpage buffer memory, another kind of then be to utilize the http-equiv attribute of webpage source code meta label to realize that the webpage buffer memory controls.For the original WebKit browser of Android platform, when carrying out the control of webpage buffer memory, only be confined to this a kind of implementation of Http response header.If http-server is not configured in the mode that realizes the control of webpage buffer memory in the Http response header; But the control information of webpage buffer memory is write in the http-equiv attribute of webpage source code meta label, these webpage buffer memory control informations will be left in the basket so.Like this; The WebKit browser will adopt self default algorithm to carry out the control of webpage buffer memory voluntarily; For mobile phone users, will there be two kinds of situation; A kind of is that webpage can not upgrade, and another kind is when browsing this webpage, all to need to obtain from server again at every turn, causes data volume bigger.
Summary of the invention
The present invention provides a kind of webpage buffer control method, Apparatus and system based on the WebKit browser, makes can support to adopt the http-equiv attribute of meta label to carry out this implementation of webpage buffer memory control based on the WebKit browser of Android platform.
The concrete technical scheme that the embodiment of the invention provides is following:
A kind of webpage buffer control method based on Android platform WebKit browser comprises:
Obtain said current web page based on the uniform resource position mark URL of current web page;
When the http-equiv attribute of confirming the meta label in the source code of said current web page is buffer memory control key word, resolves said meta label and obtain the cache-time of said current web page;
URL address and cache-time with said current web page; Pass to the caching management module of Java layer through the middle layer interface module; Said middle layer interface module is the interface module between kernel bottom and Java layer, and indicates this caching management module to carry out the webpage caching process.
A kind of webpage buffer control device based on Android platform WebKit browser comprises:
Acquiring unit is used for obtaining said current web page based on the uniform resource position mark URL of current web page;
Resolution unit when the http-equiv attribute of meta label that is used for confirming the source code of said current web page is buffer memory control key word, is resolved said meta label and is obtained the cache-time of said current web page;
Caching control unit; Be used for the caching management module that URL address and cache-time with said current web page pass to the Java layer; When indicating this caching management module to carry out the webpage caching process,, pass to the caching management module of Java layer through the middle layer interface module with the URL address and the cache-time of said current web page; Said middle layer interface module is the interface module between kernel bottom and Java layer, and indicates this caching management module to carry out the webpage caching process.
A kind of webpage cache control system based on Android platform WebKit browser comprises:
Be provided with user terminal based on the webpage buffer control device of WebKit browser; Be used for obtaining said current web page based on the uniform resource position mark URL of current web page; When the http-equiv attribute of confirming the meta label in the source code of said current web page is buffer memory control key word; Resolve said meta label and obtain the cache-time of said current web page, the caching management module that the URL address and the cache-time of said current web page passed to the Java layer is when indicating this caching management module to carry out the webpage caching process; URL address and cache-time with said current web page; Pass to the caching management module of Java layer through the middle layer interface module, said middle layer interface module is the interface module between kernel bottom and Java layer, and indicates this caching management module to carry out the webpage caching process;
The webserver, the URL address of the current web page that is used for sending according to user terminal is sent the web data of said current web page to subscriber terminal side based on the webpage buffer control device of WebKit browser.
Based on technique scheme; In the embodiment of the invention; After obtaining the URL address of current web page,, obtain the cache-time of current web page through the webpage buffer memory control statement that the http-equiv attribute of resolving the meta label is realized; And URL address that will this current webpage and the caching management module that the webpage cache-time passes to the Java layer; And indicate this caching management module to carry out the webpage caching process, thus make the WebKit browser can support to adopt the http-equiv attribute of meta label to carry out the control of webpage buffer memory, overcome the original WebKit browser of Android platform and realized the limitation that the webpage buffer memory is controlled; Can support to adopt Http response header to carry out on the basis of webpage buffer memory control, further support adopts the http-equiv attribute of meta label to carry out the implementation of webpage buffer memory control.
Description of drawings
Fig. 1 among the present invention based on the webpage cache control system Organization Chart of WebKit browser;
Fig. 2 among the present invention based on the webpage buffer control device structural drawing of WebKit browser;
Fig. 3 among the present invention based on the webpage buffer control method process flow diagram of WebKit browser.
Embodiment
In order to overcome the limitation of the original WebKit browser of Android platform to the control of webpage buffer memory; The embodiment of the invention provides a kind of webpage buffer control method based on the WebKit browser; Can overcome the limitation that the original WebKit browser of Android platform carries out the control of webpage buffer memory; Make the WebKit browser when supporting that Http response header carries out the control of webpage buffer memory, can further support to adopt the http-equiv attribute of meta label to carry out the implementation that the webpage buffer memory is controlled.This method is: obtain this current webpage based on the uniform resource position mark URL of current web page; When the http-equiv attribute of confirming the meta label in the source code of this current webpage is buffer memory control key word; Resolve this meta label and obtain the cache-time of above-mentioned current web page; The URL address and the cache-time of above-mentioned current web page are passed to the caching management module of Java layer, and indicate this caching management module to carry out the webpage caching process.
Below in conjunction with accompanying drawing the preferred embodiment of the invention is elaborated.
Consult accompanying drawing 1, in the embodiment of the invention, mainly form with the webserver 11 by webpage buffer control device 10 based on the WebKit browser based on the webpage cache control system of WebKit browser, wherein,
Webpage buffer control device 10 based on the WebKit browser; Be used for obtaining this current webpage based on the uniform resource position mark URL of current web page; When the http-equiv attribute of confirming the meta label in the source code of this current webpage is buffer memory control key word; Resolve this meta label and obtain the cache-time of above-mentioned current web page, the URL address and the cache-time of this current webpage passed to the caching management module of Java layer, and indicate this caching management module to carry out the webpage caching process.
The webserver 11, the URL address of the current web page that is used for sending according to user terminal is sent the web data of above-mentioned current web page to subscriber terminal side based on the webpage buffer control device 10 of WebKit browser.
Consult shown in the accompanying drawing 2, in the embodiment of the invention, mainly comprise following processing unit based on the webpage buffer control device 10 of WebKit browser:
Acquiring unit 101 is used for obtaining this current webpage based on the uniform resource position mark URL of current web page;
Resolution unit 102 when the http-equiv attribute that is used for confirming the meta label of above-mentioned current web page source code is buffer memory control key word, is resolved this meta label and is obtained the cache-time of this current webpage;
Caching control unit 103 is used for the URL address and the cache-time of above-mentioned current web page are passed to the caching management module of Java layer, and indicates this caching management module to carry out the webpage caching process.
Based on the said system framework, consult shown in the accompanying drawing 3, in the embodiment of the invention, realize that based on the WebKit browser detailed process of webpage buffer memory control is following:
Step 301: (Uniform Resource Locator URL) obtains this current webpage based on the URL of current web page.
When the user need visit certain webpage, need the current URL address that needs the webpage of visit of input.When portable terminal obtains this current webpage based on the URL of current web page; At first obtain and this corresponding cache-time in URL address from this locality; When confirming that according to this cache-time the webpage of local last corresponding above-mentioned URL address caching is expired; Obtain above-mentioned current web page from server, otherwise, directly from local cache, load above-mentioned current web page.
Wherein, Obtain from this locality with the corresponding cache-time in above-mentioned URL address after, when judging this cache-time, explain that the webpage of local last corresponding above-mentioned URL address caching is expired more than or equal to null value and less than the current time; Need obtain this current webpage from server; Otherwise the webpage that local cache is described is valid data, can directly from local cache, load above-mentioned current web page.
Step 302: when the http-equiv attribute of confirming the meta label in the source code of above-mentioned current web page is buffer memory control key word, resolves above-mentioned meta label and obtain the cache-time of above-mentioned current web page.
Wherein, the meta label is a complementary label in the webpage source code HEAD district of html language description, between html document head < HEAD>mark and < TITLE>mark.Http-equiv attribute in the meta label is given some information of browser in order to respond, and helps correct web page content.
For example; URL address according to certain webpage of user input; Obtain this web data, from this webpage source code intercepting go out statement meta http-equiv=" cache-control " content=" max-age=5000 "/, wherein in the http-equiv of meta label attribute, be webpage buffer memory control key word " cache-control "; The value of content variable can be provided with; Here, the value of content is represented cache-time (being also referred to as expired time), and promptly current web page is expired after 5000 seconds at buffer memory.
Wherein, Resolve above-mentioned meta label and obtain the cache-time of current web page; Be specially: when the http-equiv attribute of the meta label in the source code of confirming current web page is buffer memory control key word; Obtain the value of content variable in the above-mentioned meta label, when the value of confirming this content variable is null value, the cache-time of said current web page is changed to null value; When the value of confirming this content variable is not null value, with the value of this content variable value as the cache-time of above-mentioned current web page.Wherein, when the value of confirming above-mentioned content variable is not null value, judge further whether the value of this content variable is exceptional value, as not being exceptional value, then with the value of this content variable value as the cache-time of above-mentioned current web page.
For example; In the current web page source code that obtains, exist meta http-equiv=" cache-control " content=" max-age=5000 "/during statement; At first when the http-equiv attribute of judging the meta label is buffer memory control key word cache-control; Obtain the value of content variable in this statement; And when the value of confirming the content variable is " max-age ", obtain the concrete numerical value of " max-age " expression, then this concrete numerical value was the cache-time of current web page in 5000 seconds.
Step 303: the URL address and the cache-time of above-mentioned current web page are passed to the caching management module of Java layer, and indicate this caching management module to carry out the webpage caching process.
With the URL address and the cache-time of above-mentioned current web page, pass to the caching management module of Java layer through the middle layer interface module.
Said middle layer interface module is the interface module between kernel bottom and Java layer, in the embodiment of the invention, is used for the URL address and the cache-time of above-mentioned current web page are passed to the Java layer from kernel bottom (Webcore).
Wherein, kernel bottom (Webcore) is the bottom nucleus module of WebKit for WebKit one of a plurality of functional modules of browser kernel of increasing income, main be responsible for to web data parsing, play up etc.
The Java layer is the required peripheral functional modules of WebKit browser application; For example; Realize peripheral functions such as graphic interface, Cache, Cookie, mainly realize, be called the Java layer in the embodiment of the invention by Java based on the peripheral functional modules of the WebKit browser of Android platform.
Through the middle layer interface module that makes up above-mentioned URL address and cache-time are passed to the caching management module of Java layer from the kernel bottom, by the URL address of the above-mentioned current web page of this caching management module buffer memory, current web page and cache-time accordingly.
Wherein, The caching management module of Java layer is in the URL address of the above-mentioned current web page of buffer memory, current web page and during corresponding cache-time; Make up Hash table (HashMap) in this locality, the URL address and the corresponding cache-time of current web page is kept in this Hash table.After the webpage source code of current web page is resolved completion; Caching management module is obtained from the Hash table of this locality and the corresponding cache-time in above-mentioned current web page URL address; And at the above-mentioned current web page of local cache; Simultaneously the URL address of above-mentioned current web page and corresponding cache-time are saved in the database, when being convenient to user terminal and visiting above-mentioned current web page once more, the query caching time from this local data base.In the embodiment of the invention, caching management module is realized by the CacheManager.java class.
For example; Resolve through the statement that the defined function in the Document class (processHttpEquiv) adopts in to the webpage source code http-equiv attribute of meta label to carry out the control of webpage buffer memory at the kernel bottom; Obtain the URL address and the cache-time of current web page; Through making up the middle layer interface module, the URL address and the cache-time of above-mentioned current web page passed to the Java layer from the kernel bottom, wherein; The concrete realization of middle layer interface module can be; Through the FrameLoaderClientAndroid class of directly joining with the Document class of kernel bottom, get access to the URL and the cache-time of above-mentioned current web page from the kernel bottom, further; Carry out the parameter transmission through WebFrame class, BrowserFrame.java class, the CacheManager.java class of directly joining successively; Thereby the URL and the webpage cache-time of above-mentioned current web page are delivered to the Java layer from kernel bottom (Webcore), and in the CacheManager.java of Java layer class, construct Hash table (Hash Map), to preserve the URL address and the cache-time of above-mentioned current web page; After the source code of current web page is resolved completion; URL address according to current web page obtains corresponding cache-time from above-mentioned Hash table, at the above-mentioned current web page of local cache, URL address and the corresponding cache-time with above-mentioned current web page deposits in the local data base simultaneously.Wherein, the FrameLoaderClientAndroid class is the loader of WebKit browser, and the WebFrame class is the encapsulation class of Frame daughter element in the webpage, and the BrowserFrame.java class is the encapsulation class of Java layer for Frame daughter element in the webpage.
Based on the foregoing description; After obtaining the URL address of current web page; Through the webpage buffer memory control statement that the http-equiv attribute of resolving the meta label is realized, obtain the cache-time of current web page, further; Through making up the middle layer interface module; With the URL address of above-mentioned current web page and the caching management module of cache-time transmission Java layer, and indicate caching management module to carry out the webpage caching process, thereby make the WebKit browser can support to adopt the http-equiv attribute of meta label to carry out the control of webpage buffer memory.Caching management module by the Java layer is carried out the webpage caching process; The above-mentioned current web page of buffer memory; And preserve the URL address of this current webpage and the corresponding relation of webpage cache-time; Thereby overcome the original WebKit browser of Android platform and realized the limitation that the webpage buffer memory is controlled; Make the WebKit browser when supporting to adopt Http response header to carry out the control of webpage buffer memory, further support adopts the http-equiv attribute of meta label to carry out the implementation of webpage buffer memory control.
And, in the foregoing description, at the webpage buffer memory control statement of resolving meta label http-equiv attribute; After obtaining the webpage cache-time of current web page; Through making up the middle layer interface module, URL address and corresponding webpage cache-time with current web page pass to the Java layer from the kernel bottom; And in database, preserve the URL address and the corresponding cache-time of above-mentioned current web page, current web page; Thereby this webpage buffer memory control flow is incorporated in the webpage buffer memory control flow of original this implementation of Http response header, has improved efficient, practiced thrift cost.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (9)
1. the webpage buffer control method based on Android platform WebKit browser is characterized in that, comprising:
Obtain said current web page based on the uniform resource position mark URL of current web page;
When the http-equiv attribute of confirming the meta label in the source code of said current web page is buffer memory control key word, resolves said meta label and obtain the cache-time of said current web page;
URL address and cache-time with said current web page; Pass to the caching management module of Java layer through the middle layer interface module; Said middle layer interface module is the interface module between kernel bottom and Java layer, and indicates this caching management module to carry out the webpage caching process.
2. the method for claim 1 is characterized in that, said uniform resource position mark URL based on current web page is obtained said current web page, comprising:
URL address according to said current web page obtains corresponding cache-time;
When confirming that according to said cache-time the webpage of local last corresponding said URL address caching is expired, obtain said current web page from server, otherwise, directly from local cache, load said current web page.
3. the method for claim 1 is characterized in that, when the http-equiv attribute of confirming the meta label in the source code of said current web page is buffer memory control key word, resolves said meta label and obtains the cache-time of said current web page, comprising:
When the http-equiv attribute of the meta label in confirming the current web page source code is buffer memory control key word, obtain the value of content variable in the said meta label;
When the value of confirming said content variable is null value, the cache-time of said current web page is changed to null value;
When the value of confirming said content variable is not null value, with the value of this content variable value as the cache-time of said current web page.
4. like claim 2 or 3 described methods, it is characterized in that, indicate said caching management module to carry out the webpage caching process, comprising:
The said current web page of buffer memory, and preserve the URL address of said current web page and the corresponding relation of cache-time.
5. the webpage buffer control device based on Android platform WebKit browser is characterized in that, comprising:
Acquiring unit is used for obtaining said current web page based on the uniform resource position mark URL of current web page;
Resolution unit when the http-equiv attribute of meta label that is used for confirming the source code of said current web page is buffer memory control key word, is resolved said meta label and is obtained the cache-time of said current web page;
Caching control unit; Be used for the caching management module that URL address and cache-time with said current web page pass to the Java layer; When indicating this caching management module to carry out the webpage caching process,, pass to the caching management module of Java layer through the middle layer interface module with the URL address and the cache-time of said current web page; Said middle layer interface module is the interface module between kernel bottom and Java layer, and indicates this caching management module to carry out the webpage caching process.
6. device as claimed in claim 5 is characterized in that, when acquiring unit obtained said current web page based on the uniform resource position mark URL of current web page, the URL address according to said current web page obtained corresponding cache-time;
When confirming that according to said cache-time the webpage of local last corresponding said URL address caching is expired, obtain said current web page from server, otherwise, directly from local cache, load said current web page.
7. device as claimed in claim 5; It is characterized in that; When resolution unit confirms that the http-equiv attribute of the meta label in the source code of current web page is buffer memory control key word, resolve said meta label and obtain the cache-time of said current web page, be specially:
When the http-equiv attribute of the meta label in confirming the current web page source code is buffer memory control key word, obtain the value of content variable in the said meta label;
When the value of confirming said centent variable is null value, the cache-time of said current web page is changed to null value;
When the value of confirming said content variable is not null value, with the value of this content variable value as the cache-time of said current web page.
8. like claim 6 or 7 described devices, it is characterized in that caching control unit indicates said caching management module to carry out the webpage caching process, is specially:
The said current web page of buffer memory, and preserve the URL address of said current web page and the corresponding relation of cache-time.
9. the webpage cache control system based on Android platform WebKit browser is characterized in that, comprising:
Be provided with user terminal based on the webpage buffer control device of WebKit browser; Be used for obtaining said current web page based on the uniform resource position mark URL of current web page; When the http-equiv attribute of confirming the meta label in the source code of said current web page is buffer memory control key word; Resolve said meta label and obtain the cache-time of said current web page, the caching management module that the URL address and the cache-time of said current web page passed to the Java layer is when indicating this caching management module to carry out the webpage caching process; URL address and cache-time with said current web page; Pass to the caching management module of Java layer through the middle layer interface module, said middle layer interface module is the interface module between kernel bottom and Java layer, and indicates this caching management module to carry out the webpage caching process;
The webserver, the URL address of the current web page that is used for sending according to user terminal is sent the web data of said current web page to subscriber terminal side based on the webpage buffer control device of WebKit browser.
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| CN102902799B (en) * | 2012-10-12 | 2015-08-12 | 中科方德软件有限公司 | The browser page display packing of a kind of sing on web Kit and device thereof |
| CN104615597B (en) * | 2013-11-04 | 2019-04-12 | 腾讯科技（深圳）有限公司 | The methods, devices and systems of cache file are removed in browser |
| CN103701819B (en) * | 2013-12-30 | 2017-04-05 | 北京网康科技有限公司 | The processing method and processing device of HTML (Hypertext Markup Language) decryption |
| CN103916474B (en) * | 2014-04-04 | 2018-05-22 | 北京搜狗科技发展有限公司 | The definite method, apparatus and system of cache-time |
| CN104462231B (en) * | 2014-11-11 | 2018-12-04 | 北京奇安信科技有限公司 | The method, apparatus and system of webpage rendering |
| CN106372267A (en) * | 2016-11-30 | 2017-02-01 | 北京奇虎科技有限公司 | Page loading method and page loading device based on browser |
| CN108628860B (en) * | 2017-03-15 | 2019-06-11 | 北京数聚鑫云信息技术有限公司 | A kind of method and device of automatic acquisition web data |
| CN109145237A (en) * | 2017-11-06 | 2019-01-04 | 上海华测导航技术股份有限公司 | A kind of optimization method of web cache problem |
| CN108563470A (en) * | 2018-03-06 | 2018-09-21 | 北京酷我科技有限公司 | The loaded and optimized strategy of web page under a kind of iOS |
| CN108600342B (en) * | 2018-03-30 | 2020-01-10 | 连尚（新昌）网络科技有限公司 | Message display method, device and storage medium |
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| CN107679108A (en) * | 2017-09-14 | 2018-02-09 | 环球智达科技（北京）有限公司 | A kind of method of persistence loading page |
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