CN102945287A - Java server page (JSP) data automatic paging java standard tag library (JSTL) label technology and application - Google Patents

Abstract

The invention relates to the java server page (JSP) data automatic paging java standard tag library (JSTL) label technology and application. Extensive markup language (XML) label is defined as: writing XML files according to the JSTL standard format, and writing corresponding JAVA processing classes. Template analysis engine includes: writing a JavaScript template analysis engine for specially analyzing template definition. A data rendering engine is used for analyzing data and emerging the data into a paging form. The Tag labeling technology of JSP is used in packaging of data paging and in a template interface analyzing processing process, wherein core files of the JSTL label of the paging are guided in by a front stage JSP page. Template definition is guided in by a front stage JSP. Developers write a data obtaining method, and data obtained from a database are required to be packaged into a javascript object nation (JSON) data aggregate format. The JSTL paging label analyzes the template definition to automatically generate a paging form. The JSTL label automatically transmits asynchronous javascript and XML (AJAX) requests to a WEB server and displays the returned data to the JSP page.

Description

JSP data automatic paging JSTL label technique and application

Technical field

The present invention relates to a kind of data automatic paging technology of Java Web application software, relate in particular to a kind of JSP data automatic paging JSTL label technique.

Background technology

Along with the development of network technology, based on network WEB uses more and more extensive.And in conjunction with the form of paging, be that WEB uses the most frequently used a kind of representing, yet the program development personnel are in the displaying interface link of data form, need to consider the many factors such as color, composing, ranks layout, having expended too much is the time, and fruit of labour reusable not, causes the wasting of resources.

Summary of the invention

Technical matters to be solved: the invention provides a kind of JSP data automatic paging JSTL label technique for above problem, present technique can reduce front end JSP and represent writing the time of code, with the developer from loaded down with trivial details interface set type and the work of data page free, and only use template definition seldom can finish front end work.So that the developer only need be absorbed in the backend services logic, in the Java of Base on Web application system, improved greatly the development efficiency of foreground JSP paging form.

Technical scheme: to the invention provides a kind of JSP data automatic paging JSTL label technique in order overcoming the above problems, to it is characterized in that: comprise three modules, be respectively:

One, XML label definition:

The XML that writes according to the standard format of JSTL describes document, describes the various attributes that document comprises the JSTL label, comprises: the data page number, every page data number, data sum, the page number are total, and write corresponding JAVA and process class;

Two, template analytics engine:

Write JavaScript template analytics engine, be used for specially resolving template definition, template engine uses front end JavaScript script edit, HTML and JS code in can recognition template;

Three, data render engine:

Call the template definition of resolving in the template engine, and the data stuffing that will return from data query is to template, and is presented as paging form;

Use the Tag label technique of JSP, encapsulation of data paging, and the processing procedure of substrate interface parsing:

1) introduce JSP data automatic paging JSTL label in the web.xml file in the web project, introduce successfully after, the JSP page of front end can use this label technique;

The front end JSP page is introduced the core document " the core document content comprises nuclear JavaScript template and processes class and style sheet " of JSP data automatic paging JSTL label technique;

3) front end JSP introduces template definition, gauge outfit, the exhibition information item of definition data form in the template;

4) front end JSP introduces template analytics engine and data render engine file;

5) call JSP data automatic paging JSTL label, and give the data page number of label, every page data number, data sum, the total attribute assignment of the page number;

6) developer writes data capture method, and the data encapsulation that method requires to get access to from database is JSON data acquisition form;

7) JSP data automatic paging JSTL label Automatically invoked template analytics engine is resolved template definition, and calling data is played up

Engine generates paging form automatically, simultaneously the paging page number of generated data;

8) page loads and during page turning, JSP data automatic paging JSTL label sends AJAX from trend WEB server and asks,

And with the JSON formatted data of returning, again carry out the 7th) step, in the JSP page, represent new data.

Beneficial effect: the present invention has done a large amount of encapsulation with loaded down with trivial details front end displaying workload, only expose the configuration parameter of minority necessity to the developer, the work such as data and paging of playing up are all finished automatically by label inside, therefore can improve greatly developer's work efficiency.This JSTL tag configurations parameter is few, and configuration item all provides default configuration mostly, so the usefulness of being simple and easy to has also strengthened code readable.

Description of drawings

Fig. 1 is frame diagram of the present invention.

After the SP page was introduced template definition, JSP data automatic paging JSTL label technique sent the HTTP request to background service

, the data in the background service data query library storage

, and be the JSON form with the data data encapsulation

Feed back to JSP data automatic paging JSTL label technique

, last JSP data automatic paging JSTL label technique carries out data and plays up.

Embodiment

Below in conjunction with accompanying drawing embodiment the present invention is described in further details.

As shown in Figure 1, JSP data automatic paging JSTL label technique comprises three modules, is respectively:

One, XML label definition:

The XML that writes according to the standard format of JSTL describes document, describes the various attributes that document comprises the JSTL label, comprises: the data page number, every page data number, data sum, the page number are total, and write corresponding JAVA and process class.

Two, template analytics engine:

Write JavaScript template analytics engine, be used for specially resolving template definition, template engine uses front end JavaScript script edit, HTML and JS code in can recognition template.

Three, data render engine:

Call the template definition of resolving in the template engine, and the data stuffing that will return from data query is to template, and is presented as paging form.

Embodiment comprises following steps:

Use the Tag label technique of JSP, encapsulation of data paging, and the processing procedure of substrate interface parsing:

1) introduce JSP data automatic paging JSTL label in the web.xml file in the web project, introduce successfully after, the JSP page of front end can use this label technique;

2) " the core document content comprises the core document of front end JSP page introducing JSP data automatic paging JSTL label technique

Nuclear JavaScript template is processed class and style sheet ";

3) front end JSP introduces template definition, gauge outfit, the exhibition information item of definition data form in the template;

4) front end JSP introduces template analytics engine and data render engine file;

5) call JSP data automatic paging JSTL label, and give the data page number of label, every page data number, data sum, the total attribute assignment of the page number;

6) developer writes data capture method, and the data encapsulation that method requires to get access to from database is JSON data acquisition form;

7) JSP data automatic paging JSTL label Automatically invoked template analytics engine is resolved template definition, and calling data is played up

Engine generates paging form automatically, simultaneously the paging page number of generated data;

8) page loads and during page turning, JSP data automatic paging JSTL label sends AJAX from trend WEB server and asks

Ask, and with the JSON formatted data of returning, again carry out the 7th) step, in the JSP page, represent new data.

The above is the preferred embodiments of the present invention only, is not restricted to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.

Claims (2)

1.JSP data automatic paging JSTL label technique is characterized in that: comprise three modules, be respectively:

One, XML label definition:

The XML that writes according to the standard format of JSTL describes document, describes the various attributes that document comprises the JSTL label, comprises: the data page number, every page data number, data sum, the page number are total, and write corresponding JAVA and process class;

Two, template analytics engine:

Write JavaScript template analytics engine, be used for specially resolving template definition, template engine uses front end JavaScript script edit, HTML and JS code in can recognition template;

Three, data render engine:

Call the template definition of resolving in the template engine, and the data stuffing that will return from data query is to template, and is presented as paging form.

2. the application of JSP data automatic paging JSTL label technique according to claim 1 is characterized in that: use the Tag label technique of JSP, encapsulation of data paging, and the processing procedure of substrate interface parsing:

1) introduce JSP data automatic paging JSTL label in the web.xml file in the web project, introduce successfully after, the JSP page of front end can use this label technique;

2) the front end JSP page is introduced the core document " the core document content comprises nuclear JavaScript template and processes class and style sheet " of JSP data automatic paging JSTL label technique;

3) front end JSP introduces template definition, gauge outfit, the exhibition information item of definition data form in the template;

4) front end JSP introduces template analytics engine and data render engine file;

5) call JSP data automatic paging JSTL label, and give the data page number of label, every page data number, data sum, the total attribute assignment of the page number;

6) developer writes data capture method, and the data encapsulation that method requires to get access to from database is JSON data acquisition form;

7) JSP data automatic paging JSTL label Automatically invoked template analytics engine is resolved template definition, and calling data is played up

Engine generates paging form automatically, simultaneously the paging page number of generated data;

8) page loads and during page turning, JSP data automatic paging JSTL label sends AJAX from trend WEB server and asks,

And with the JSON formatted data of returning, again carry out the 7th) step, in the JSP page, represent new data.

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