Java Mvc编程模式列子

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1、实验六Mvc编程模式【实验目的】1、掌握jsp+JavaBean+Servlet开发模式2、掌握Mvc思想，会使用mvc开发简单的web应用。【实验内容:】1、开发mvc模式的登录模块或者注册模块，要求链接数据库2、以Mvc思想为指导，使用jsp+JavaBean+Servlet开发模式开发一个web版本的计算器3、开发mvc模式的用户满意度调查程序，调查结果要用图形显示、保存在数据库【参考代码：】1、mvc模式的登录模块或者注册模块Jsp：<%@pagecontentType="text/html;charset=GB

2、K"%>

Username:
Password:

3、mit">Servlet：publicclassLoginServletextendsHttpServlet{privatestaticfinalStringCONTENT_TYPE="text/html;charset=GBK";//Initializeglobalvariablespublicvoidinit()throwsServletException{}//ProcesstheHTTPPostrequest

4、publicvoiddoPost(HttpServletRequestrequest,HttpServletResponseresponse)throwsServletException,IOException{response.setContentType(CONTENT_TYPE);PrintWriterout=response.getWriter();Stringname=request.getParameter("username");Stringpass=request.getParameter("passwo

5、rd");if(name!=null&&pass!=null){Useruser=newUser();user.setUsername(name);user.setPassword(pass);if(user.check(user)){HttpSessionsession=request.getSession();session.setAttribute("user",user);RequestDispatcherdispatcher=request.getRequestDispatcher("welcome.jsp")

6、;dispatcher.forward(request,response);}else{RequestDispatcherdispatcher=request.getRequestDispatcher("fail.jsp");dispatcher.forward(request,response);}}else{RequestDispatcherdispatcher=request.getRequestDispatcher("fail.jsp");dispatcher.forward(request,response);

7、}out.close();}//Cleanupresourcespublicvoiddestroy(){}}Javabean：publicclassUser{privateStringusername;privateStringpassword;publicUser(){}publicvoidsetUsername(Stringusername){this.username=username;}publicvoidsetPassword(Stringpassword){this.password=password;}pu

8、blicStringgetUsername(){returnusername;}publicStringgetPassword(){returnpassword;}publicbooleancheck(Useruser){Stringname=user.getUsername();Stringpass=user.ge