仿照慕课中的报表项目http://www.imooc.com/learn/375 但是点击生成报表 显示404错误这是JSP代码<%@ page language="java" import="java.util.*,beans.*" pageEncoding="utf-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <base href="<%=basePath%>"> <title>My JSP 'index.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> <style type="text/css"> .table-c {border-right: solid black;border-bottom: solid black} .table-c td{border-left: solid black;border-top: solid black;padding: 10px 10px} </style> </head> <body> <form action="servlet/MyServlet" method="post"> <input type="submit" value="生成报表"> </form> <table class="table-c"> <tr class="trcss"> <td colspan="6" align="center"><strong>亚思晟公司职员信息表</strong></td> </tr> <tr> <td>编号</td> <td>用户名</td> <td>公司名称</td> <td>公司地址</td> <td>公司电话</td> <td>电子邮件</td> </tr> <% List list = null; if(session.getAttribute("chart")!=null){ list = (List)session.getAttribute("chart"); //取到servlet中的list if(list.size()>0){ int temp = 0; UserInfo userinfo; for(int i=0;i<1;i++){ userinfo = new UserInfo(); userinfo = (UserInfo)list.get(i); %> <tr> <td><%=userinfo.getId() %></td> <td><%=userinfo.getFullname() %></td> <td><%=userinfo.getCompanyname() %></td> <td><%=userinfo.getCompanyaddress() %></td> <td><%=userinfo.getTel()%></td> <td><%=userinfo.getEmail() %></td> </tr> <% } } } %> </table> </body></html>这是 servlet代码 package servlet;import java.io.IOException;import java.io.PrintWriter;import java.util.List;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import JDBCservice.Service;public class MyServlet extends HttpServlet { /** * Constructor of the object. */ public MyServlet() { super(); } /** * Destruction of the servlet. <br> */ public void destroy() { super.destroy(); // Just puts "destroy" string in log // Put your code here } /** * The doGet method of the servlet. <br> * * This method is called when a form has its tag value method equals to get. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">"); out.println("<HTML>"); out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>"); out.println(" <BODY>"); out.print(" This is "); out.print(this.getClass()); out.println(", using the GET method"); out.println(" </BODY>"); out.println("</HTML>"); out.flush(); out.close(); } /** * The doPost method of the servlet. <br> * * This method is called when a form has its tag value method equals to post. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { List list; Service service = new Service(); list = service.getChart(); request.getSession().setAttribute("chart",list); response.sendRedirect("index.jsp"); } /** * Initialization of the servlet. <br> * * @throws ServletException if an error occurs */ public void init() throws ServletException { // Put your code here }}这是XML中的代码<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> <display-name></display-name> <servlet> <description>This is the description of my J2EE component</description> <display-name>This is the display name of my J2EE component</display-name> <servlet-name>MyServlet</servlet-name> <servlet-class>servlet.MyServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>MyServlet</servlet-name> <url-pattern>/servlet/MyServlet</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list></web-app>请问哪里出错了？？？？？？？？？谢谢！！！！！！
1 回答
已采纳
梦影剑魂
TA贡献66条经验 获得超21个赞
肯定是访问路径没写对，找不到指定资源文件。你试下在servlet中dopost()方法的response.sendRedirect("index.jsp");重定向的路径前加个/,看下可以吗
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