HTTP Status 404 - /TestReport/ShowReport

type Status report

message /TestReport/ShowReport

description The requested resource is not available.

Apache Tomcat/7.0.85

http://localhost:8080/TestReport/ShowReport

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <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>ShowReport</servlet-name>
    <servlet-class>servlet.ShowReport</servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>ShowReport</servlet-name>
    <url-pattern>/servlet/ShowReport</url-pattern>
  </servlet-mapping>    
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

-------------------------------------------------------------------------------------------

 <form action="ShowReport" method="post">
      <input type="submit" value="生成报表">
      </form>

........................

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public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
       //----------------控制层--------------------------------------------
        
        Service service=new Service();
        List list=service.getProfit();//看起来这里没有new，那是因为在service里面new过了。
        
        request.getSession().setAttribute("PROFIT", list);
        response.sendRedirect("index.jsp");