CN104573040B - Capture the method and system of web data - Google Patents
Capture the method and system of web data Download PDFInfo
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- CN104573040B CN104573040B CN201510025584.2A CN201510025584A CN104573040B CN 104573040 B CN104573040 B CN 104573040B CN 201510025584 A CN201510025584 A CN 201510025584A CN 104573040 B CN104573040 B CN 104573040B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/95—Retrieval from the web
- G06F16/957—Browsing optimisation, e.g. caching or content distillation
- G06F16/9577—Optimising the visualization of content, e.g. distillation of HTML documents
Abstract
The present invention provides a kind of method and system for capturing web data, the described method includes：Generate data template；Second request data is spliced into according to the data template of the generation and the first request data；The crawl of web data is performed according to second request data being spliced into.The adaptability to diversified demand can be improved during web data is captured by using the present invention.
Description
Technical field
The present invention relates to the communications field, more particularly, it is related to the method and system for capturing web data.
Background technology
With the development of Internet industry, mass data is increasing, and consumer products emerge in an endless stream, the aggravation of competition and
The quickening of product iteration speed proposes the requirement of higher to data acquisition technology.Product exist to data acquisition technology it is abundant and
Changeable demand, for example, collection is showed by GUI (Graphical User Interface, graphic user interface) interaction triggerings
Data complete or collected works, collection be verified mechanism obstruction information or collection by query result information of crucial word drive etc..However,
Lack a kind of collecting method that can support variety classes demand in the prior art at present.
The content of the invention
To efficiently solve above-mentioned technical problem, the present invention provides a kind of method and system for capturing web data.
On the one hand, embodiments of the present invention provide a kind of method for capturing web data, the described method includes：
Generate data template；
Second request data is spliced into according to the data template of the generation and the first request data；
The crawl of web data is performed according to second request data being spliced into.
On the other hand, embodiments of the present invention additionally provide a kind of system for capturing web data, the system comprises：
Generation module, for generating data template；
Concatenation module, is spliced into for the data template generated according to the generation module and the first request data
Two request datas；
Handling module, the second request data for being spliced into according to the concatenation module perform grabbing for web data
Take.
Implementing the method and system of crawl web data provided by the invention can carry during web data is captured
The high adaptability to diversified demand.
Brief description of the drawings
Fig. 1 is a kind of flow chart of the method for crawl web data of embodiment according to the present invention；
Fig. 2 shows a kind of embodiment of the step S110 shown in Fig. 1；
Fig. 3 is the frame diagram of the method for another crawl web data of embodiment according to the present invention；
Fig. 4 is a kind of structure diagram of the system of crawl web data of embodiment according to the present invention；
Fig. 5 shows a kind of embodiment of the generation module 110 shown in Fig. 4.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with attached drawing to this hair
It is bright to be described in further detail.
Fig. 1 is a kind of flow chart of the method for crawl web data of embodiment according to the present invention.The described method includes：
S110：Generate data template.
S120：Second request data is spliced into according to the data template of the generation and the first request data.
Wherein, in embodiments of the present invention, which can include：Request data template, described first please
The raw requests data that data are user are sought, and second request data is according to the data module and the first request data
The request data for being really used to send being spliced into.
S130：The crawl of web data is performed according to second request data being spliced into.
In the above-described embodiment, can be improved by data template during web data is captured needs variation
The adaptability asked.
Wherein, in embodiments of the present invention, step S130 can include：By second number of request being spliced into
According to transmission to website to be captured；Receive the response data that the website returns.
Also, in embodiments of the present invention, first request data, the second request data and response data can
To be HTTP (Hypertext transfer protocol, hypertext transfer protocol) protocol data.
To region be directly facing specified data, other extraneous datas in the page are not downloaded, saving bandwidth, and realize that customization is grabbed
Take, in a kind of preferred embodiment of the present invention, which can also include：Response data template.Also, holding
Partial data that can be in the response data according to the response data template extraction after row step S140.The wherein response data
Template describes the position of required a part of data in response data.
In addition, to realize the support to non-response data template analysis mode, further improve to personalized and customization
The support of crawl, in another preferred embodiment of the present invention, except the number of responses according to response data template extraction
Beyond this customization Grasp Modes of partial data in, the extraction response can also be custom-configured according to user
Partial data in data customizes crawl to realize.Wherein described custom-configure for example can be regular expression, XPath
(Xml Path Language, extensible markup language path language) character string, JSONPath (JSON path languages) character string
Deng.
As shown in Fig. 2, step S110 can specifically be accomplished by the following way：
S111：The crawl of web data is carried out to the website.
S112：Intercept and capture the transmission data that the crawl produces.
S113：Each request data in the transmission data of the intercepting and capturing generates the request data template, and, root
The response data template is generated according to each response data in the transmission data of the intercepting and capturing.
Wherein, in embodiments of the present invention, it is each in the transmission data according to the intercepting and capturing in step S113
Request data generates the request data template and can be accomplished by the following way：Determine name identical in each request data
Value pair and different name-value pairs；The identical name-value pair is directly write into the request data template, by the difference
Name-value pair in value be modified to replace label after be written to the request data template.Wherein, name-value pair refers to field
" title " and " value ", with the field Host in the heading of HTTP standard request messages:Exemplified by www.baidu.com, Host
It is the title of field, www.baidu.com is the value of field, " Host "：" www.baidu.com " is a name-value pair.
Also, each response data in the transmission data of the intercepting and capturing, which generates the response data template, to lead to
Cross in the following manner realization：Determine identical name-value pair and different name-value pairs in each response data；Will be described identical
Name-value pair directly writes to the response data template, the value in the different name-value pair is modified to after replacing label and write
Enter to the response data template.
Embodiments of the present invention are specifically described below in conjunction with specific example.As shown in figure 3, obtain first clear
Look at the data (including HTTP request data and http response data) interacted between device and website, and from the interaction of the acquisition
Analyzed in data and stablize constant data format information, i.e. data template, including：Request data template and response data mould
Plate, wherein the request data template are used to splice request data, and response data template is used to describe required in response data
The position of a part of data；Then the first request data (the raw requests data of user) is loaded into request queue；Last root
The second request data is spliced into according to the first request data in request data template and request queue, and with the side of http protocol
Formula is sent to website to be captured, and the response data of website return is then read in a manner of http protocol, from the number of responses
HTML is generally according to the middle required data of extraction (customizing extraction), such as the response data that slave site returns
(HyperText Mark-up Language, hypertext markup language) webpage, or JSON (JavaScript Object
Notation, a kind of data interchange format of lightweight) (Extensible Markup Language, can expand by data or XML
Open up markup language) data etc., and for a user, the data of a part may be only concerned (such as in Taobao's webpage
Trade name and price), it can specifically be extracted according to response data template, in addition in embodiments of the present invention
In, Interface design (input response data and User Defined configuration) can also be provided a user, designs user's extension
Meet the program for being used to customize extraction of oneself demand.It for example can be regular expression, XPath that the user, which custom-configures,
(Xml Path Language, extensible markup language path language) character string, JSONPath (JSON path languages) character string
Deng.In addition, in embodiments of the present invention, crawl efficiency is improved by using concurrent thread pond.
The detailed process for generating data template is illustrated below.
First, network agent is set up between browser and Website server；Secondly, user is based on browser generation n wheels
The crawl behavior of web data, and using captured described in agent intercepts generation transmission data (including HTTP request data and
Http response data), often wheel interaction is divided into m group messages for order, by request data message identification into Snm, by response datagram
Text mark is into Rnm, then jth (1<=j<=n) wheel interaction be expressed as：C (j)=[(Sj1, Rj1), (Sj2, Rj2) ...,
(Sjm, Rjm)], kth group (1 in jth wheel<=k<=m) interaction data is (Sjk, Rjk)；Same group is finally determined in n wheel interactions
(identical " KV to ", i.e., name-value pair, K represent key, i.e., the title of one field, V generations to COMMON_KV in request data message
Table value, i.e., the value of one field) and DIFF_KV (different " KV to "), COMMON_KV is write direct into number of request
According to template, the value in DIFF_KV is modified to<<REQ_TEMPLATE_VARx>>Number of request is written to after (replacement label)
According to template, likewise, determine with the COMMON_KV and DIFF_KV in group response data message in n wheel interactions, will
COMMON_KV directly writes to response data template, and the value in DIFF_KV is modified to<<RES_TEMPLATE_VARx>>
Response data template is written to after (replacement label).
Wherein, request data template can be equal to following data in form：
GET/sWd=<<REQ_TEMPLATE_VAR1>>HTTP1.1^M
Host:www.baidu.com^M
Accept-Language:zh-cn,zh；Q=0.8, en-us；Q=0.5, en；Q=0.3^M
Connection:keep-alive^M
Accept:text/html,application/xhtml+xml,application/xml；Q=0.9, */*；Q=
0.8^M
User-Agent:Mozilla/5.0(Windows NT 6.1；WOW64；rv:23.0)Gecko/
20100101Firefox/23.0^M
^M
Response data template can be equal to following data in form：
HTTP/1.1200OK^M
Date：Fri,29Nov 201309:43:59GMT^M
Content-Type:text/html；Charset=utf-8^M
Transfer-Encoding:chunked^M
Connection:Keep-Alive^M
Vary:Accept-Encoding^M
Set-Cookie:BAIDUID=44DC43D914C192C565B0ED5FC8B27E4：FG=1；Expires=
Thu,31-Dec-3723:55:55GMT；Max-age=2147483647；Path=/；
Domain=baidu.com^M
Set-Cookie:BDSVRTM=0；Path=/^M
Set-Cookie:H_PS_PSSID=4316_1423_4263；Path=/；Domain=baidu.com^M
P3P:CP=" OTI DSP COR IVA OUR IND COM " ^M
Expires:Fri,29Nov 201309:43:00GMT^M
Cache-Control:private^M
Server:BWS/1.0^M
BDPAGETYPE:1^M
BDQID:0xa9a36f5caddcaf9a^M
BDUSERID:0^M
^M
3c27^M
<！DOCTYPE html>…
<Div id=" content "><<RES_TEMPLATE_VAR1>></div>…</script><！--b22
693a7b31a5acd-->
The processing stream of the COMMON_KV and DIFF_KV that calculate two data packets data1 and data2 is specifically described below
Journey：
1st, by the HTTP packet header of data1 and backpack body be converted to dicthead1 (name-value pair in the packet header of data1) and
Dictbody1 (name-value pair in the backpack body of data1), dicthead2 is converted to by the HTTP packet header of data2 and backpack body
(name-value pair in the packet header of data2) and dictbody2 (name-value pair in the backpack body of data2), wherein, for request bag with
And response bag：HTTP packet header is one group of name-value pair in itself, for the request bag of POST (renewal) type：HTTP backpack bodies are one in itself
Group name-value pair, for the request bag of GET (acquisition) type：HTTP backpack bodies is skies, the response for POST types and GET types
Bag：HTTP backpack bodies are a string of character strings, can be according to label to being segmented to backpack body, then using section sequence number as title, in section
Appearance is used as value；
2nd, calculate dicthead1 and dicthead2 COMMON_KV_H (identical name-value pair in packet header) and
DIFF_KV_H (different name-value pair in packet header)；
3rd, calculate dictbody1 and dictbody2 COMMON_KV_B (identical name-value pair in backpack body) and
DIFF_KV_B (different name-value pair in backpack body).
Detailed description below calculates the tool of the COMMON_KV_H and DIFF_KV_H of dicthead1 and dicthead2
Body process：
1st, each key1 and corresponding value value1 in dicthead1 is successively read, performs following operation：
If the 1.1st, compare in dicthead2/dicthead1 key1 pairs there is also identical key1 in dicthead2
Answer two values whether equal；
If 1.1.1, equal, key1:Value1 is stored in COMMON_KV_H, from dicthead1/dicthead2
Delete key1:value1；
If 1.1.2, unequal, key1:Value1 is stored in DIFF_KV_H, from dicthead1/dicthead2
Delete key1 and corresponding value；
If identical key1 the 1.2nd, is not present in dicthead2, key1:Value1 is stored in DIFF_KV_H, from
Key1 is deleted in dicthead1:value1；
2nd, by remaining key in dicthead2:Value is deleted from dicthead2 being directly stored in DIFF_KV_H
It is deleted.
Also, calculate dictbody1 and dictbody2 COMMON_KV_B and DIFF_KV_B process with it is above-mentioned
Process is identical, and details are not described herein.
Fig. 4 is a kind of structure diagram of the system of crawl web data of embodiment according to the present invention.Referring to Fig. 4,
The system 100 includes：
Generation module 110, for generating data template.
Concatenation module 120, is spelled for the data template generated according to the generation module 110 and the first request data
Pick out the second request data.Wherein, in embodiments of the present invention, which can include：Request data template, institute
The raw requests data that the first request data is user are stated, and second request data is according to the data module and first
The request data for being really used to send that request data is spliced into.
Handling module 130, the second request data for being spliced into according to the concatenation module 120 perform web data
Crawl.
Wherein, in embodiments of the present invention, which can include：Transmitting element, for by the spelling
The second request data picked out is sent to website to be captured；Receiving unit, for receiving transmitted by the transmitting element extremely
The response data that website returns.
Also, in embodiments of the present invention, first request data, the second request data and response data can
To be HTTP (Hypertext transfer protocol, hypertext transfer protocol) protocol data.
To region be directly facing specified data, other extraneous datas in the page are not downloaded, saving bandwidth, and realize that customization is grabbed
Take, in a kind of preferred embodiment of the present invention, which can also include：Response data template.It is also, described
System 100 can also include：First extraction module, for the portion in the response data according to the response data template extraction
Divided data.Wherein the response data template describes the position of required a part of data in response data.
In addition, to realize the support to non-response data template analysis mode, further improve to personalized and customization
The support of crawl, in another preferred embodiment of the present invention, the system 100 is in addition to first extraction module
It can also include the second extraction module, for custom-configuring the partial data extracted in the response data according to user.
Wherein described custom-configure for example can be regular expression, XPath (Xml Path Language, extensible markup language
Path language) character string, JSONPath (JSON path languages) character string etc..
As shown in figure 5, the generation module 110 can include：
Placement unit 111, for carrying out the crawl of web data to the website.
Unit 112 is intercepted and captured, the transmission data produced for intercepting and capturing the placement unit 111.
Generation unit 113, including：For each number of request in the transmission data intercepted and captured unit 112 and intercepted and captured
According to the request data template generation subelement 1131 for generating the request data template, and, for according to the intercepting and capturing unit
Each response data in the 112 transmission data intercepted and captured generates the response data template generation subelement of the response data template
1132。
Wherein, the request data template generation subelement 1131 can include：First determines component, described for determining
Identical name-value pair and different name-value pairs in each request data；First write-in component, for determining component by described first
Identified identical name-value pair directly writes to the request data template, described first is determined different determined by component
Name-value pair in value be modified to replace label after be written to the request data template.Wherein, name-value pair refers to field
" title " and " value ", with the field Host in the heading of HTTP standard request messages:Exemplified by www.baidu.com, Host
It is the title of field, www.baidu.com is the value of field, " Host "：" www.baidu.com " is a name-value pair.
The response data template generation subelement 1132 can include：Second determines component, for determining each sound
Answer name-value pair identical in data and different name-value pairs；Second write-in component, for determining component institute really by described second
Fixed identical name-value pair directly writes to the response data template, and name different determined by component is determined by described second
The value of value centering is written to the response data template after being modified to replacement label.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can be by
The mode of software combination hardware platform is realized, naturally it is also possible to is all implemented by hardware.Based on such understanding, this hair
What bright technical solution contributed background technology can be embodied in the form of software product in whole or in part, the meter
Calculation machine software product can be stored in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are used so that one
Platform computer equipment (can be personal computer, server, smart mobile phone or the network equipment etc.) perform each reality of the present invention
Apply the method described in some parts of example or embodiment.
The term and wording used in description of the invention is just to for example, be not intended to form restriction.Ability
Field technique personnel should be appreciated that on the premise of the basic principle of disclosed embodiment is not departed from, to the above embodiment
In each details can carry out various change.Therefore, the scope of the present invention is only determined by claim, in the claims, unless
It is otherwise noted, all terms should be understood by the broadest rational meaning.
Claims (12)
- A kind of 1. method for capturing web data, it is characterised in that the described method includes：Generate data template；Second request data is spliced into according to the data template and the first request data；The crawl of web data is performed according to second request data；Wherein,Generation data template includes：The website for treating crawl carries out the crawl of web data；Intercept and capture the transmission data that the crawl produces；Each request data in the transmission data generates request data template, and, according in the transmission data Each response data generates response data template.
- 2. the method as described in claim 1, it is characterised in that the crawl of web data is performed according to second request data Including：Second request data is sent to website to be captured；Receive the response data that the website returns.
- 3. method as claimed in claim 2, it is characterised in that the method further includes：After the step of performing the response data for receiving the website return, the response according to the response data template extraction Partial data in data.
- 4. method as claimed in claim 3, it is characterised in that the method further includes：After the step of performing the response data for receiving the website return, the extraction response is custom-configured according to user Partial data in data.
- 5. the method as described in claim 1, it is characterised in that each request data in the transmission data generates request Data template includes：Determine identical name-value pair and different name-value pairs in each request data；The identical name-value pair is directly write into the request data template, the value in the different name-value pair is repaiied Just it is being to be written to the request data template after replacing label.
- 6. the method as described in claim 1, it is characterised in that each response data in the transmission data, which generates, rings Data template is answered to include：Determine identical name-value pair and different name-value pairs in each response data；The identical name-value pair is directly write into the response data template, the value in the different name-value pair is repaiied Just it is being to be written to the response data template after replacing label.
- A kind of 7. system for capturing web data, it is characterised in that the system comprises：Generation module, for generating data template；Concatenation module, being spliced into second for the data template generated according to the generation module and the first request data please Seek data；Handling module, the second request data for being spliced into according to the concatenation module perform the crawl of web data；Its In,The generation module includes：Placement unit, the website for treating crawl carry out the crawl of web data；Unit is intercepted and captured, the transmission data produced for intercepting and capturing the placement unit；Generation unit, including：Request is generated for each request data in the transmission data intercepted and captured unit and intercepted and captured The request data template generation subelement of data template, and, for according in the transmission data intercepted and captured unit and intercepted and captured Each response data generation response data template response data template generation subelement.
- 8. system as claimed in claim 7, it is characterised in that the handling module includes：Transmitting element, for sending second request data being spliced into website to be captured；Receiving unit, the response data returned for receiving the website transmitted by the transmitting element extremely.
- 9. system as claimed in claim 8, it is characterised in that the system also includes：First extraction module, for the partial data in the response data according to the response data template extraction.
- 10. system as claimed in claim 9, it is characterised in that the system also includes：Second extraction module, for custom-configuring the partial data extracted in the response data according to user.
- 11. system as claimed in claim 7, it is characterised in that the request data template generation subelement includes：First determines component, for determining identical name-value pair and different name-value pairs in each request data；First write-in component, for determining that name-value pair identical determined by component directly writes to the request by described first Data template, described first is determined the value in name-value pair different determined by component is written to after being modified to replacement label The request data template.
- 12. system as claimed in claim 7, it is characterised in that the response data template generation subelement includes：Second determines component, for determining identical name-value pair and different name-value pairs in each response data；Second write-in component, for determining that name-value pair identical determined by component directly writes to the response by described second Data template, described second is determined the value in name-value pair different determined by component is written to after being modified to replacement label The response data template.
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| CN106681902B (en) * | 2015-11-10 | 2019-10-25 | 北京国双科技有限公司 | The test method and device of web data |
| CN106357482B (en) * | 2016-11-30 | 2019-10-29 | 四川秘无痕科技有限责任公司 | A method of based on network protocol implementing monitoring web page access |
| CN108334634A (en) * | 2018-02-27 | 2018-07-27 | 北京中关村科金技术有限公司 | A kind of method, apparatus, equipment and the storage medium of extraction data information |
| CN109547259A (en) * | 2018-12-07 | 2019-03-29 | 东软集团股份有限公司 | Application configuration method, apparatus, storage medium and electronic equipment |
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| US6690394B1 (en) * | 2000-10-24 | 2004-02-10 | Alex J. Harui | Method and apparatus for delivering web data to a wireless device |
| CN101477539A (en) * | 2008-12-31 | 2009-07-08 | 杭州华三通信技术有限公司 | Information acquisition method and device |
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| US6690394B1 (en) * | 2000-10-24 | 2004-02-10 | Alex J. Harui | Method and apparatus for delivering web data to a wireless device |
| CN101477539A (en) * | 2008-12-31 | 2009-07-08 | 杭州华三通信技术有限公司 | Information acquisition method and device |
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