转发不了jsp，报错404

package com.imooc.servlet;
 
import java.io.IOException;
 
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
public class LoginServlet extends HttpServlet {
 
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String account = request.getParameter("account");
        String password = request.getParameter("password");
        System.out.println("用户名："+account);
        System.out.println("密码：" + password);
        if("lala".equals(account) && "123".equals(password)) {
            request.getRequestDispatcher("/success.jsp").forward(request, response);
             
        }
        else {
            request.getRequestDispatcher("/fila.jsp").forward(request, response);
        }
    }
 
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req,resp);
    }
     
}

<br>

<?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" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">

<display-name>imooc-servlet1</display-name>

<welcome-file-list>

<welcome-file>index.html</welcome-file>

<welcome-file>index.htm</welcome-file>

<welcome-file>index.jsp</welcome-file>

<welcome-file>default.html</welcome-file>

<welcome-file>default.htm</welcome-file>

<welcome-file>default.jsp</welcome-file>

</welcome-file-list>

<servlet-name>LoginServlet</servlet-name>

<servlet-class>com.imooc.servlet.LoginServlet</servlet-class>

</servlet>