j2ee实验报告.doc

实验成绩实验评阅教师签名华北科技学院管理系实 验 报 告 册实验课程名称： 实验项目序号： 实验项目名称： 实验室名称： 开课学期： 学年第一学期 授 课 教 师： 实验指导教师 专 业： 班 级： 学 号： 姓 名： 实验报告实验时间： 2010年 5月 30日 节一、实验运行环境Windows+tomcat环境二、实验目的(1) 了解JavaEE开发环境；(2) 掌握简单得Servlet开发方法。(3) 掌握利用Servlet处理客户端输入的方法。(4) 掌握利用Filter进行业务过滤的方法。三、实验要求实现一简单登陆系统四、实验内容和步骤(1)包括登陆页面、登陆成功欢迎页面、登陆失败提示页面；(2)登陆界面输入用户名、密码均为guest时，转到登陆成功欢迎页面，否则转到登陆失败提示页面；(3)不输入用户名、密码直接在地址栏中输入登陆成功欢迎页面时，能利用filter将页面转向到登陆页面登录页面程序 登录欢迎登录系统用户名：密 码：判断登录程序package com.servlet;import java.io.*;import javax.servlet.*;import javax.servlet.http.*;public class Main extends HttpServlet protected void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException doPost(request,response);protected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException System.out.println(In Main!);String userID=request.getParameter(userID);String password=request.getParameter(password);if(userID.equals(guest)&password.equals(guest) RequestDispatcher dispatcher =request.getRequestDispatcher(/loginsucess); dispatcher.forward(request, response);elseRequestDispatcher dispatcher =request.getRequestDispatcher(/loginfail); dispatcher.forward(request, response);登录成功程序package com.servlet;import java.io.*;import javax.servlet.*;import javax.servlet.http.*;public class LoginSucess extends HttpServlet protected void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException doPost(request,response);protected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException response.setContentType(text/html;charset=gb2312);PrintWriter out = response.getWriter();out.println(登录成功); out.println(登录成功，欢迎您！);out.close();登录失败程序package com.servlet;import java.io.*;import javax.servlet.*;import javax.servlet.http.*;public class LoginFail extends HttpServlet protected void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException doPost(request,response);protected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException response.setContentType(text/html;charset=gb2312);PrintWriter out = response.getWriter();out.println(登录失败); out.println(登录失败，请重新登录！);out.close();利用filter文件的程序public class myFilter implements Filter public void doFilter(ServletRequest request, ServletResponse response,FilterChain chain) throws IOException, ServletException HttpServletRequest req = (HttpServletRequest) request; HttpServletResponse res = (HttpServletResponse) response; String userid=;if(!(request.getParameter(userID)=null)userid=request.getParameter(userID);/判断用户名、密码的合法性if (userid = null | .equals(userid) RequestDispatcher dispatcher = request.getRequestDispatcher(login.html); dispatcher.forward(request,response); elsechain.doFilter(request,response); 五、实验结果分析与总结通过对该实验的练习，我学会了配置J2EE的tomcat软件的web服务