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JSP Technology Conspectus And Specialties
The JSP (Java Server mix) technology is ud by the Sun microsystem issued by the company to develop dynamic Web application technology. With its easy, cross-platform, in many dynamic Web application programming languages, in a short span of a few years, has formed a complete t of standards, and widely ud in electronic commerce, etc. In China, the JSP now also got more extensive attention, get a good development, more and more dynamic website to JSP technology. The related technologies of JSP are briefly introduced.
The JSP a simple technology can quickly and with the method of generating Web pages. U the JSP technology Web page can be easily display dynamic content. The JSP technology are designed to make the construction bad on Web applications easier and efficient, and the applications and various Web rver, application rver, the browr and development tools work together.
The JSP technology isn't the only dynamic web technology, also not the first one, in the JSP technology existed before the emergence of veral excellent dynamic web technology, such as CGI, ASP, etc. With the introduction of the 无花果干的功效
technologies under dynamic web technology, the development and the JSP. Technical
JSP the development background and development history
In web brief history, from a world wide web that most of the network information static on stock transactions evolution to acquisition of an operation and infrastructure. In a variety of applications, may be ud for bad on Web client, look no restrictions.
Bad on the browr client applications than traditional bad on client/rver applications has veral advantages. The benefits include almost no limit client access and extremely simplified application deployment and management (to update an application, management personnel only need to change the program on a rver, not thousands of installation in client applications). So, the software industry is rapidly to build on the client browr multi-layer applicati迟钝的反义词
on.
The rapid growth of exquisite bad Web application requirements development of technical improvements. Static HTML to show relatively static content is right choice, The new challenge is to create the interaction bad on Web appl水果刀
ications, in the procedures, the content of a Web page is bad on the ur's request or the state of the system, and are not predefined characters.
For the problem of an early solution is to u a CGI - BIN interface. Developers write to interface with the relevant procedures and parate bad on Web applications, the latter through the Web rver to invoke the former. This plan has rious problem -- each new extensible CGI requirements in a new process on the rver. If multiple concurrent urs access to this procedure, the process will u the Web rver of all available resources, and the performance of the system will be reduced to extremely low.
Some Web rver providers have to provide for their rver by plugins "and" the API to simplify the Web application development. The solutions are associated with certain Web rver, cannot solve the span multiple suppliers solutions. For example, Microsoft's
Active Server mix (ASP) technology in the Web page to create dynamic content more easily, but also can work in Microsoft on Personal Web Server and IIS.
There are other solutions, but cannot make an ordinary page designers can easily master. For example, such as the Servlet Java technologies can u Java language interaction application rver code easier. Developers to write such Servlet to receive signals from the Web browr to generate an HTTP request, a dynamic respon (may be inquires the databa to finish the request), then nd contain HTML or XML documents to the respon of the browr.
note: one is bad on a Java Servlet Java technical operation in the rver program (with different, the latter operating in the Applet browr end). In this book the Servlet chapter 4.
Using this method, the entire page must have made in Java Servlet. If developers or Web managers want to adjust page, you'll have to edit and recompile the Servlet Java, even in logic has been able to run. Using this method, the dynamic content with the application of
the page still need to develop skills.
Obviously, what is needed is a industry to create dynamic content within the scope of the pages of the solution. This program will solve the current scheme are limited. As follows:
can on any Web rver or applications.
will application page displays and paration.
can rapidly developing and testing.
simplify the interactive development bad on Web application process.
