JSP Application Software Technology

Technical Analysis of Web Application Software Development Based on JSP

Judging from the development trend in recent years, computer and network technology have been significantly developed and widely popularized. In the context of the increasing use of computer software, this makes traditional production and life The methods have changed dramatically. Web application software based on network communication has begun to permeate all aspects of people's lives and bring convenience to people. With the increasingly mature JSP technology, it has also begun to have a lot of applications in Web development software. According to the results of practice, it has become the main development direction of related fields to achieve the purpose of developing Web application software system through the use of JSP technology.

1. Overview of JSP technology

1.1 Introduction to JSP technology

JSP is mainly developed by Sun, and the development of dynamic webpage production technology is mainly based on the Java language. It allows Java code logic to be embedded in HTML and XML documents. It can be said that, to a certain extent, It brings great convenience to the content creation and management of dynamic web pages. Compared with PHP and ASP, there are certain differences in the working mechanism. In the process of page execution, JSP pages are not interpreted, but compiled. The first call to the JSP file is actually a process of compiling the Java Servlet. When the browser sends the request for the JSP file to the server, the server at this time directly responds with the corresponding Servlet result.

The scripting language provided by JSP is different from ASP technology in that it is more based on Java language. In addition, JSP can also easily access and reuse Java Beans. At the same time, JSP can completely separate the generation and presentation of Web page content. This will not only give full play to the powerful functions of HTML, but also prevent duplication of work, and significantly improve the overall efficiency.

1.2 JSP operation model

In HTML documents, JSP can embed scripting language into it. Before the client receives the transmitted Web page, it can get the analysis of the JSP syntax on the server side, and it will be treated as a Servlet. The suffix in the form of JSP will be reflected in the HTML file with the scripting language. Through the use of the Java language, JSP will be used as the default scripting language. This means that the purpose of scripting can be achieved by taking advantage of the powerful functions provided by Java.

(1) Request a JSP: For tasks that have been defined in advance, such as accessing the database, you can call the reusable Java Bean through JSP, and then set the obtained result as a Bean. Through the use of these Java Beans, JSP can generate state and return it to the client. Those who develop JSP only pay attention to the interface of Java Bean.

(2) Request a Servlet: It generates the dynamic information to be included in the response. This Servlet is used to represent the content generated by the Servlet by activating a JSP.

In the first access model of JSP, the dynamic content is mainly realized based on the Java Bean in the page file, and JSP is responsible for the representation of the content.

The client sends a request to it in the JSP request model. The specific Java Bean component receives the request forwarded by JSP, and automatically passes the request parameters to the Java Bean component through the introspection class of the Java Bean. Through the query of the Java Bean component, and then JSP gets the result. If the Java Bean component just realizes the Servlet interface target, then the service method of the Servlet can be invoked by any request. For the properties of the Java Bean component, if the JSP makes an inquiry every time, the Java Bean component can implement dynamic calculation processing and return the calculation result at the same time. With the help of standard Java Bean properties, JSP obtains the result of processing on its reader. And the obtained results are displayed in the form of HTML files.

Another model looks like this:

In the displayed JSP request model, the Servlet will receive a request from the client at this time, and the content on the HTML page is generated and displayed by the Servlet. In the model, the Servlet operates the database through JDBC to obtain the required data. The result data is encapsulated in JavaBean, and then JSP is responsible for receiving the delivered Java Bean. In the HTML file, the data generated by the Servlet is displayed on the file by JSP. In this example, the generation of data is completely responsible for by Servlet, and the representation of data is completely responsible for by JSP.

1.3 The superiority of JSP technology

For developers and designers, through the use of this technology, dynamic web pages, especially web application software systems, can be better created and maintained. In Java technology, it can be said that JSP technology is an indispensable part. It can develop Web applications independent of the same platform at a faster speed, and separate the user interface in the system content. Without any changes in the dynamic content, developers and designers can change the overall layout of the web page.

1.4 Independence between platforms and servers

The established JSP is based on the independence between the server and the platform. The input support it has is mainly provided by various toolkits. For database products and server components, etc. are all provided by developers. Responsible for providing, after writing once, it can run in any environment that satisfies the Java syntax structure. In fact, no matter what kind of web server it is on, JSP technology can run, and it can provide corresponding support for various types of toolkits provided by different developers. It can be said that this technology can transform the traditional simple For a certain platform, or the situation of developers' attachment has been significantly improved.

1.5 JSP technology has label extensibility

The application of this technology allows developers to expand or apply JSP tags, and developers can customize the tag library. Therefore, for web page producers, the tag technology compatible with XML can be maximized. Therefore, this reduces the degree of dependence on the scripting language to a large extent. During the production of web pages, etc., the complexity of the work is also greatly reduced because of the label customization technology it possesses.

1.6 JSP components have cross-platform reusability

All components of JSP have cross-platform reusability. This component can access traditional databases, and can realize the purpose of running on platforms such as Unix according to the distributed system mode. For the development of Web application software, using JSP components as the basic method can significantly increase the speed of its development process, and ensure that each organization can obtain a balance in its existing skills and development.

2. Web application software architecture

Compared with the past, the browsing requirements of the Internet have been significantly improved, so the C/S architecture obviously does not meet the needs of development. Therefore, the browser/server (B/S), as a novel software architecture, is just here. It can be said that it has achieved great development in a very short period of time. The B/S architecture, through the simplification of the client work, then achieves the optimization of the client, that is, it only needs to install and configure very few client application software, and the server will need to undertake most of the work. For the request Executing the application and accessing the database can all be done by the server.

2.1 Access layer

The access layer is mainly located on the client side, and its function is to issue some kind of request, that is, it is sent from the web server of the web browser Internet, processed by the web server, and the result is fed back to the browser.

2.2 Web server layer

The Web server layer is mainly located on the Web server side, and its function is to receive the request sent by the application program, and connect to the database, and then send the application for operating data to the database server, and wait for the result of processing the data.

2.3 Database layer

The database layer is mainly located on the database server side. Its function is to receive the transaction processing requests sent by the Web server to the database, implement a series of data update operations, such as querying the database, inserting and deleting, etc., and submit them to the Web server. The result of running.

The B/S structure effectively reduces the burden on the client, and significantly improves the performance of the entire system. In this way, for maintenance personnel, they do not need to run around in the heavy work of maintenance and upgrading every day, and at the same time, they do not need to update each client. In between, I was tired of the maintenance work of each program, but put more energy into updating the program work on the web server. There is an independent logic between the layers in the B/S architecture, which will not interfere with each other, that is, changes in any layer will affect the functions of the other two layers, and fundamentally eliminate the defects of the two-layer C/S architecture. It has been improved. It can be said that there is a very important change in the application system architecture.

3. Technical Analysis of Web Application Software Development Based on JSP Technology

Because it is based on the Java language foundation, JSP technology can be realized, so it has very good adaptability. At the same time, through the effective combination with JAVA Enterprise API, Web application software can be better created, and it can also Guarantee the performance of web application software. As Web developers and designers, through the use of JSP technology, more energy can be placed on processing application logic, so the complexity of the underlying logic can be greatly simplified, and the developed Web application The quality of software has been significantly improved, and this is also a great benefit for designers, that is, the difficulty of its development has been reduced. Therefore, compared with other development technologies of Web application software, such as ASP development technology, JSP technology has significant advantages in this respect.

According to the Web application architecture based on JSP technology, it can be known that during the development of Web application software based on JSP technology, the relationship between various parts and the functions in the entire system, such as JSP technology and JDBC, are very important. clear.

This article will start to analyze at the technical level, and analyze the three-tier Web application software development, using JSP technology as the required components of the technology, as well as the required basic technology. Among them, JDBC technology can easily use the existing database as the basis to create a Web interface, JDBC technology, etc., can better construct a large-scale Web application system that is convenient for interaction and has various information content. It has been proved by practice that this Web application software system has a good use effect. Based on this, it has important practical significance no matter in terms of promotion or application.

Summarize

In fact, in the process of developing Web application software, the actual needs should be taken as the main reference basis, and the system design and modeling Web application software should be combined with the specific situation of system development. The implementation of Java programming language, and JSP development technology, the three-tier Web application software system built is closely combined, which has become the main direction of WWB software application software development in the future.

The above is the technical analysis of JSP-based Web application software development introduced by Shenzhen Zuchuang Microelectronics Co., Ltd. If you have software and hardware function development needs for smart electronic products, you can rest assured to entrust them to us. We have rich experience in customized development of electronic products, and can evaluate the development cycle and IC price as soon as possible, and can also calculate PCBA quotations. We are a number of chip agents at home and abroad: Songhan, Yingguang, Jieli, Ankai, Quanzhi, realtek, with MCU, voice IC, Bluetooth IC and module, wifi module. We have hardware design and software development capabilities. Covering circuit design, PCB design, single-chip microcomputer development, software custom development, APP custom development, WeChat official account development, voice recognition technology, Bluetooth wifi development, etc. It can also undertake the research and development of smart electronic products, the design of household appliances, the development of beauty equipment, the development of Internet of Things applications, the design of smart home solutions, the development of TWS earphones, the development of Bluetooth earphone speakers, the development of children's toys, and the research and development of electronic education products.