Design And Implementation Of SSH Framework And ExtJs Framework Of Qualification Management System

With the rapid development of information technology, information technology is the development trend of the times, more and more application of information systems have appeared, their requirements are also increasing. Not only to take into account the stability, security, and need to consider the scalability, reusability and the convenience of maintenance. To this end, the industry has raised the designing specification about MVC, and through the separation of data and data model, a data model can be represented by a variety of performance. Therefore, on the basis of the MVC thinking, we can put forward more efficient solutions to improve system performance.There are some problems about Traditional Web applications:First, There is a strong correlation between the front-end and the back-end, When we modify the background, the foreground code will alse have major modifications, and secondly, after the client sends a request to the background, if you want has a new request, you must wait until the background has responsed. Between the two requests, no response will happen, in addition, for every request, the server will send complete page to the client, rather than the required data. This will largely increase the burden on the network, that is why the page can not be too large, and this will make the show page is not rich enough, Finally, the process of software development and maintenance, if a module or function need to be modified, it will lead to the change of much code, with the rapid development of software, these deficiencies gradually become obstacles to the development of Web applications.For the solution of the problems, J2EE has provided some programming frameworks such as EJB container. EJB (at least3.0) is a heavy container, its deployment is very complex, so a lot of time is wasted in the framework of programming. Thus a large number of open-source framework has appeared, by using these frameworks,we can significantly improve the Web system’s architecture and simplify the development process, improve the reuse of code, and deployment,besides we can use a more compact way to ensure the stability and reliability of the system by abandoning abandon the cumbersome configurationAmong current framework, they all have their own merits, this paper will use the Extjs framework, theSpring framework and the Hibernate framework in the system.the front-end can use the Struts2framework to exchange with the back-end,the Spring framework can manage all component,the persistence of data can be achieved by the Hibernate framework.The Extjs framework will show the processed data,the system will use this plan to show the excellence of the combination,the Extjs framework can separate the front-end from the back-end,its AjAX can improve the use of network by the Asynchronous request,the use of SSH furtherly reduce the association of back-end, all this can reduce the burden to re-establish the program,moreover it can solve a problem by using part of its function.