CN114780164A - Method and system for screening webpage information based on browser plug-in - Google Patents

Method and system for screening webpage information based on browser plug-in Download PDF

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Publication number
CN114780164A
CN114780164A CN202210196011.6A CN202210196011A CN114780164A CN 114780164 A CN114780164 A CN 114780164A CN 202210196011 A CN202210196011 A CN 202210196011A CN 114780164 A CN114780164 A CN 114780164A
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China
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plug
webpage
dom node
content
web page
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CN202210196011.6A
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CN114780164B (en
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吴迪
万振华
王颉
李华
董燕
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Seczone Technology Co Ltd
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Seczone Technology Co Ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00Arrangements for program control, e.g. control units
    • G06F9/06Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44Arrangements for executing specific programs
    • G06F9/445Program loading or initiating
    • G06F9/44521Dynamic linking or loading; Link editing at or after load time, e.g. Java class loading
    • G06F9/44526Plug-ins; Add-ons
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/90Details of database functions independent of the retrieved data types
    • G06F16/95Retrieval from the web
    • G06F16/957Browsing optimisation, e.g. caching or content distillation
    • G06F16/9577Optimising the visualization of content, e.g. distillation of HTML documents
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/90Details of database functions independent of the retrieved data types
    • G06F16/95Retrieval from the web
    • G06F16/958Organisation or management of web site content, e.g. publishing, maintaining pages or automatic linking
    • G06F16/986Document structures and storage, e.g. HTML extensions
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00Energy efficient computing, e.g. low power processors, power management or thermal management

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

The invention discloses a method and a system for screening webpage information based on a browser plug-in, wherein the method comprises the following steps: creating a plug-in capable of being inserted into a browser, wherein the plug-in is used for monitoring all DOM nodes of a webpage DOM tree and analyzing the content in the DOM nodes; loading the plug-in into a browser; monitoring a DOM node in a webpage at the position where the mouse stays through the plug-in, and judging whether CSS text control exists in the DOM node, wherein the CSS text control is used for preventing text content in the webpage from being added into a selection set of the mouse, and if so, bypassing a CSS text control program and acquiring the text content in the DOM node; when the mouse executes the copy selection function, the plug-in places the text content in the DOM node at the position of the current mouse into the pasting board; by the method, the content in the webpage can be simply and quickly acquired, no technical threshold exists, the required text content can be acquired even in the webpage with CSS text control, and the use experience is effectively improved.

Description

Method and system for screening webpage information based on browser plug-in
Technical Field
The invention relates to the technical field of network information acquisition, in particular to a method and a system for screening webpage information based on a browser plug-in.
Background
At present, content information on different websites is required to be acquired and filtered by technical means, generally, the content information is acquired and filtered by a crawler method, and by sending an http request, an html (hypertext markup language) Dom tree of a page is captured, and resources required to be acquired are analyzed and taken out. However, the crawler technology has its own disadvantages, i.e., relatively high requirements for users and not sufficiently friendly operability. The crawler is a section of script for crawling web page contents, and for different contents to be crawled on different web pages, a user needs to understand and appropriately modify the script and adjust crawling rules. Secondly, for more and more PWA (single page) applications, the crawling effect of crawlers is not ideal. In addition, recently, more and more web pages are provided with CSS text control to prevent a user from copying text contents on the web pages, so that the user can only save desired contents in a screenshot manner, and therefore, the user wants a web page information acquisition manner that can bypass the CSS text control to improve information collection efficiency.
Disclosure of Invention
The invention aims to provide a method and a system for screening webpage information based on a browser plug-in, which are used for acquiring webpage text information content, can effectively reduce the use threshold and can avoid the phenomenon that the webpage information cannot be copied due to the arrangement of CSS text control.
In order to achieve the purpose, the invention discloses a method for screening webpage information based on a browser plug-in, which comprises the following steps:
creating a plug-in capable of being inserted into a browser, wherein the plug-in is used for monitoring all DOM nodes of a webpage DOM tree and analyzing the content in the DOM nodes;
loading the plug-in into a browser;
monitoring a DOM node in a webpage at the position where a mouse stays through the plug-in, and judging whether CSS text control exists in the DOM node, wherein the CSS text control is used for preventing text contents in the webpage from being added into a selection set of the mouse, if so, bypassing a CSS text control program, and acquiring the text contents in the DOM node;
when the mouse executes the copy selection function, the plug-in places the text content in the DOM node at the position of the current mouse into the pasting board.
Preferably, when the mouse is stopped at a DOM node in the web page, the text content corresponding to the DOM node is highlighted.
Preferably, in the plug-in, an address of a target webpage and a path of a DOM node where content to be acquired in the target webpage is located may also be set, so as to periodically and automatically acquire the content to be acquired in the target webpage.
Preferably, a dialog box for automatically acquiring configuration is arranged in the plug-in, and the address of the target webpage and the path of a DOM node where the content to be acquired in the target webpage is located can be configured in the dialog box.
The invention also discloses a system for screening webpage information based on the browser plug-in, which comprises a plug-in creating module, a loading module, a monitoring module and an acquiring module;
the plug-in creating module is used for creating a plug-in capable of being inserted into a browser, and the plug-in is used for monitoring a DOM node corresponding to a mouse in a webpage and analyzing the content in the DOM node;
the loading module is used for loading the plug-in into a browser;
the monitoring module is used for monitoring a DOM node in a webpage at the position where the mouse stays through the plug-in and judging whether CSS text control exists in the DOM node, the CSS text control is used for preventing text contents in the webpage from being added into a selection set of the mouse, if yes, a CSS text control program is bypassed, and the text contents in the DOM node are obtained;
and the acquisition module is used for placing the text content in the DOM node at the position of the current mouse into the pasting board.
Preferably, the system further comprises a marking module, wherein the marking module is used for highlighting the text content corresponding to the DOM node at the position of the mouse.
Preferably, the system further comprises a configuration module, and the configuration module is used for configuring the address of the target webpage and the path of the DOM node where the content to be acquired in the target webpage is located in the plug-in, so as to periodically and automatically acquire the content to be acquired in the target webpage.
Preferably, a dialog box for automatically acquiring configuration is arranged in the configuration module, and the address of the target webpage and the path of the DOM node where the content to be acquired in the target webpage is located can be configured in the dialog box.
The invention also discloses another system for screening webpage information based on the browser plug-in, which comprises the following steps:
one or more processors;
a memory;
and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the programs comprising instructions for performing the method of screening web page information based on a browser plug-in described above.
The invention also discloses a computer readable storage medium which comprises a computer program, wherein the computer program can be executed by a processor to complete the method for screening webpage information based on the browser plug-in.
Compared with the prior art, the method for screening the webpage information has the advantages that the plug-in used for monitoring different DOM nodes corresponding to different positions of a mouse moved to the webpage is created, when the plug-in is used, the plug-in is only needed to be loaded into a browser, then when the mouse is placed at the position of the target content, the plug-in detects the DOM node at the position to judge whether CSS text control exists, if yes, the action of a CSS text control program is only needed to be bypassed, and then the text content at the DOM node is added into a pasting board, so that the target content is quickly obtained; therefore, the method can simply and quickly acquire the content in the webpage without a technical threshold, and can acquire the required text content even in the webpage with CSS text control, thereby effectively improving the use experience.
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Fig. 1 is a flowchart of a method for screening web page information based on a browser plug-in an embodiment of the present invention.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
The embodiment discloses a method for screening webpage information based on a browser plug-in, which is used for acquiring text information in a webpage of a browser, and as shown in fig. 1, the method comprises the following steps:
s1: creating a plug-in capable of being inserted into a browser, wherein the plug-in is used for monitoring a DOM node corresponding to a mouse in a webpage and analyzing the content in the DOM node;
s2: loading the plug-in into a browser;
s3: monitoring DOM nodes in the webpage at the position where the mouse stays through the plug-in, and judging whether CSS text control exists in the DOM nodes or not, wherein the CSS text control is used for preventing text contents in the webpage from being added into a selection set of the mouse, if not, S5 is executed, and if yes, S4 is executed;
s4: bypassing the CSS text control program;
s5: acquiring text content in the DOM node;
s6: when the mouse executes the copy selection function, the plug-in places the text content in the DOM node at the position of the current mouse into the sticky board.
By the method, because the plug-in used for monitoring the fact that the mouse moves to different DOM nodes corresponding to different positions of the webpage is loaded in the browser, when the mouse is placed at the position of the target content in use, the plug-in detects the DOM node at the position to judge whether CSS text control exists, if yes, the action of a CSS text control program is only needed to be bypassed, and then the text content at the DOM node is added into the pasting board, so that the target content is quickly acquired. By the method, the content in the webpage can be simply and quickly acquired, no technical threshold exists, the required text content can be acquired even in the webpage with CSS text control, and the use experience is effectively improved.
Furthermore, a prompt function is also set in the plug-in, that is, when the mouse stops at a DOM node in the webpage, the text content corresponding to the DOM node is highlighted to remind the user of the currently selected target content.
Furthermore, in the plug-in, the address of the target webpage and the path of the DOM node where the content to be acquired in the target webpage is located can be set, so that the content to be acquired in the target webpage can be automatically acquired at regular intervals. For some web pages, important contents can be updated at a certain fixed position regularly, and in order to reduce the workload of acquiring such information, the address (url) of the web page and the path (xpath) of the DOM node where the contents are to be acquired can be configured in the plug-in, so that the updated target contents of the target web page can be automatically acquired regularly only by executing the plug-in regularly, and the automation degree of acquiring the web page information is effectively improved.
Preferably, a dialog box for automatically acquiring configuration is arranged in the plug-in, and the address of the target webpage and the path of the DOM node where the content to be acquired is located in the target webpage can be configured in the dialog box. In this embodiment, through the setting of the dialog box, the user can configure the target webpage address and the path of the DOM node where the acquired content is located in real time according to the requirement, so that the acquisition of the network content is more convenient and faster.
The invention also discloses a system for screening webpage information based on the browser plug-in, which comprises a plug-in creating module, a loading module, a monitoring module and an obtaining module.
The plug-in creating module is used for creating a plug-in which can be inserted into the browser, and the plug-in is used for monitoring a DOM node corresponding to the mouse in the webpage and analyzing the content in the DOM node;
the loading module is used for loading the plug-in into the browser;
the monitoring module is used for monitoring DOM nodes in the webpage at the position where the mouse stays through the plug-in and judging whether CSS text control exists in the DOM nodes or not, the CSS text control is used for preventing text contents in the webpage from being added into a selection set of the mouse, and if yes, a CSS text control program is bypassed, and the text contents in the DOM nodes are obtained;
and the acquisition module is used for placing the text content in the DOM node at the position of the current mouse into the pasting board.
Preferably, the system further comprises a marking module, and the marking module is used for highlighting the text content corresponding to the DOM node at the position where the mouse is located.
Preferably, the system further comprises a configuration module, and the configuration module is configured to configure, in the plug-in, an address of the target web page and a path of a DOM node where the content to be acquired in the target web page is located, so as to periodically and automatically acquire the content to be acquired in the target web page.
Furthermore, a dialog box for automatically acquiring configuration is arranged in the configuration module, and the address of the target webpage and the path of the DOM node where the content to be acquired in the target webpage is located can be configured in the dialog box.
It should be noted that the working principle and the working manner of the system for screening web page information based on a browser plug-in this embodiment are described in detail in the above method for screening web page information based on a browser plug-in, and are not described herein again.
The invention also discloses another system for screening webpage information based on the browser plug-in, which comprises one or more processors, a memory and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the programs comprise instructions for executing the method for screening webpage information based on the browser plug-in. The processor may be a general Central Processing Unit (CPU), a microprocessor, an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits, and is configured to execute a relevant program, so as to implement the functions that are required to be executed by the modules in the system for screening web page information based on a browser plug-in according to the embodiment of the present Application, or to execute the method for screening web page information based on a browser plug-in according to the embodiment of the present Application.
The invention also discloses a computer readable storage medium which comprises a computer program, wherein the computer program can be executed by a processor to complete the method for screening webpage information based on the browser plug-in. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more available media. The usable medium may be a read-only memory (ROM), or a Random Access Memory (RAM), or a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape, a magnetic disk, or an optical medium, such as a Digital Versatile Disk (DVD), or a semiconductor medium, such as a Solid State Disk (SSD).
The embodiment of the application also discloses a computer program product or a computer program, which comprises computer instructions, and the computer instructions are stored in a computer readable storage medium. The processor of the electronic device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the electronic device executes the method for screening the webpage information based on the browser plug-in.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.

Claims (10)

1. A method for screening webpage information based on a browser plug-in is characterized by comprising the following steps:
creating a plug-in capable of being inserted into a browser, wherein the plug-in is used for monitoring a DOM node corresponding to a mouse in a webpage and analyzing the content in the DOM node;
loading the plug-in into a browser;
monitoring a DOM node in a webpage at the position where a mouse stays through the plug-in, and judging whether CSS text control exists in the DOM node, wherein the CSS text control is used for preventing text contents in the webpage from being added into a selection set of the mouse, if yes, bypassing a CSS text control program, and acquiring the text contents in the DOM node;
when the mouse executes the copy selection function, the plug-in places the text content in the DOM node at the position of the current mouse into the pasting board.
2. The method for screening web page information based on browser plug-in of claim 1, wherein when a mouse is stopped at a DOM node in a web page, text content corresponding to the DOM node is highlighted.
3. The method for screening web page information based on browser plug-in of claim 1, wherein in the plug-in, an address of a target web page and a path of a DOM node where content to be acquired in the target web page is located can be further set, so as to periodically and automatically acquire the content to be acquired in the target web page.
4. The method for screening webpage information based on the browser plug-in of claim 3, wherein a dialog box for automatically obtaining configuration is arranged in the plug-in, and an address of the target webpage and a path of a DOM node where content to be obtained in the target webpage is located can be configured in the dialog box.
5. A system for screening webpage information based on a browser plug-in is characterized by comprising a plug-in creating module, a loading module, a monitoring module and an obtaining module;
the plug-in creating module is used for creating a plug-in capable of being inserted into a browser, and the plug-in is used for monitoring a DOM node corresponding to a mouse in a webpage and analyzing the content in the DOM node;
the loading module is used for loading the plug-in into a browser;
the monitoring module is used for monitoring a DOM node in a webpage at the position where the mouse stays through the plug-in and judging whether CSS text control exists in the DOM node, the CSS text control is used for preventing text contents in the webpage from being added into a selection set of the mouse, if yes, a CSS text control program is bypassed, and the text contents in the DOM node are obtained;
and the acquisition module is used for placing the text content in the DOM node at the position of the current mouse into the pasting board.
6. The system for screening web page information based on browser plug-ins of claim 5, further comprising a marking module for highlighting text content corresponding to a DOM node at a position where a mouse is located.
7. The system for screening web page information based on browser plug-in of claim 5, further comprising a configuration module, wherein the configuration module is configured to configure the address of the target web page and the path of the DOM node where the content to be acquired in the target web page is located in the plug-in, so as to periodically and automatically acquire the content to be acquired in the target web page.
8. The system for screening web page information based on browser plug-in according to claim 7, wherein a dialog box for automatically obtaining configuration is set in the configuration module, and an address of the target web page and a path of a DOM node where content to be obtained in the target web page is located can be configured in the dialog box.
9. A system for screening webpage information based on browser plug-ins is characterized by comprising the following components:
one or more processors;
a memory;
and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the programs comprising instructions for performing the method of screening web page information based on a browser plug-in of any of claims 1 to 4.
10. A computer-readable storage medium comprising a computer program executable by a processor to perform the method of filtering web page information based on a browser plug-in of any one of claims 1 to 4.
CN202210196011.6A 2022-02-28 2022-02-28 Method and system for screening webpage information based on browser plug-in Active CN114780164B (en)

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