Servlet登录

登录页面

信息界面

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" id="WebApp_ID" version="4.0">
  <display-name>LoginServlet</display-name>


<!-- servlet映射 -->
    <servlet>
        <servlet-name>LoginServlet</servlet-name>
        <servlet-class>com.yuanze.servlet.LoginServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>LoginServlet</servlet-name>
        <url-pattern>/login</url-pattern>
    </servlet-mapping>
<!-- servlet映射 -->


<!-- 静态资源映射 -->
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.css</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.js</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.html</url-pattern>
    </servlet-mapping>
<!-- 静态资源映射 -->


</web-app>

web.xml

package com.yuanze.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 req, HttpServletResponse resp) throws ServletException, IOException {
        // TODO Auto-generated method stub
        String zh=req.getParameter("zh");
        String mm=req.getParameter("mm");
        req.getSession(true).setAttribute("mm", mm);
        req.getSession(true).setAttribute("zh", zh);
        resp.sendRedirect(req.getContextPath()+"/"+"info.jsp");
        
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        // TODO Auto-generated method stub
        doGet(req, resp);
    }

    
}

LoginServlet

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%
    String zh=(String)session.getAttribute("zh");
    String mm=(String)session.getAttribute("mm");
%>
<!DOCTYPE html>
<html lang="en" >

<head>
  <meta charset="UTF-8">
  <title>登录信息</title>
  <link href="https://fonts.googleapis.com/css?family=Lato:700" rel="stylesheet">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css">

  
      <link rel="stylesheet" href="css/info.css">

  
</head>

<body>

  <div class="text-effect">
  <!-- Select the text in the preview and type in your own -->
  <h1 class="neon" data-text="账号:<%= zh %>" contenteditable>账号:<%= zh %></h1>
  <h1 class="neon" data-text="密码:<%= mm %>" contenteditable>密码:<%= mm %></h1>
  <div class="gradient"></div>
  <div class="spotlight"></div>
</div>
  <script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js'></script>

  

    <script  src="js/info.js"></script>




</body>

</html>

info.jsp

<!DOCTYPE html>
<html lang="en" >

<head>
  <meta charset="UTF-8">
  <title>登录</title>
  
  
      <link rel="stylesheet" href="css/style.css">

  
</head>

<body>

  <div class="login-wrap">
  <h2>Login</h2>
  
  <div class="form">
  <form action="./login" method="POST">
      <input type="text" placeholder="Username" name="zh" required/>
    <input type="password" placeholder="Password" name="mm" required/>
    <button type="submit"> 登录 </button>
  </form>
    
   
  </div>
</div>
  <script src='https://code.jquery.com/jquery-1.10.0.min.js'></script>

  

    <script  src="js/index.js"></script>




</body>

</html>

项目目录

关键:

Servlet 在web.xml中映射配置

web.xml 中静态资源映射配置

Servlet中 session存值与 jsp交互

链接：https://pan.baidu.com/s/198-BAJXyW4TEGTaIWinWRQ
提取码：gvps

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