jsp可以正常运行，但是一跳转到Servlet就老是出现404，求助！！！

laui 2023-12-08 02:37:04

这是ValidateServlet.java

package servlets;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class ValidateServlet extends HttpServlet{
public void doPost(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException{
   String code=request.getParameter("code");
   HttpSession session=request.getSession();
   String randStr=(String)session.getAttribute("randStr");
   response.setCharacterEncoding("gb2312");
   PrintWriter out=response.getWriter();
   if(!code.equals(randStr)){
       out.println("验证码错误！");
   }
   else{out.println("验证码正确！跳转到LoginServlet......");
   }
}
}

WEB.xml配置：

<?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>ValidateServlet</servlet-name>
<servlet-class>servlets.ValidateServlet</servlet-class>
</servlet>

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

loginForm.jsp：

<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
<html>
<body>
欢迎登陆本系统<br>
<form action="http://localhost:8080/Prj01/src/servlets/ValidateServlet" method="post">
请您输入账号：<input type="text" name="account"/><br>
请您输入密码：<input type="password" name="password"/><br>
验证码:<input type="text" name="code" size="10"/>

<img src="validateMix.jsp" alt="验证码" onclick="this.src='validateMix.jsp?'+Math.random();"/>
<input type="submit" value="登录"/>
</form>
</body>
</html>

运行结果：