简单的报表项目传值不显示
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！！！！！！
frank_mojito1回答
-
梦影剑魂
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
随时随地看视频慕课网APP
相关分类
Java