URL处不带.jsp显示失败

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URL处不带.jsp显示失败

来源：1-1 初识EL表达式

mixiaofan

2019-11-13 15:30:24

第一张图是IDEA运行项目后自动开启的

第二张图URL不带.jsp

第三张图带.jsp失败

package com.imooc.el;

public class Student {
    private String name;
    private String mobile;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getMobile() {
        return mobile;
    }

    public void setMobile(String mobile) {
        this.mobile = mobile;
    }
}

package com.imooc.el;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/info")
public class StudentServlet extends HttpServlet {
    public StudentServlet() {
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        Student stu = new Student();
        stu.setName("子");
        stu.setMobile(null);
        String grade = "A";
        request.setAttribute("student", stu);
        request.setAttribute("grade", grade);
        request.getRequestDispatcher("/info.jsp").forward(request, response);
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    <welcome-file-list>
        <welcome-file>info.jsp</welcome-file>
    </welcome-file-list>
</web-app>

<%@ page import="com.imooc.el.Student" %><%--
  Created by IntelliJ IDEA.
  User: mhr04
  Date: 19.11.13
  Time: 14:51
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>Student</title>
  </head>
  <body>
<%--  Jsp方式输出--%>
  <%
    Student stu = (Student) request.getAttribute("student");
    String grade = (String) request.getAttribute("grade");
    out.println("<h1>"+stu.getName()+"</h1>");
    out.println("<h1>"+stu.getMobile()+"</h1>");
    out.println("<h1>"+grade+"</h1>");
  %>
  </body>
</html>

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