表单发送get请求参数是username password Severlet 接收请求参数判断是否是admin 123返回welcome user admin 返回user not privlege-优快云博客

本文链接：https://blog.youkuaiyun.com/l_x_r/article/details/121642483

package com.yq.web;
/*/*
 * 表单发送get请求 参数是username password
 * Severlet 接收请求参数 判断是否是admin 123 返回welcome user admin
 * 返回user not privlege
 * */*/
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(urlPatterns = "/Login")
public class Login extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        String username = req.getParameter("username");
        String password = req.getParameter("password");

        if(username.equals("admin") && password.equals("123")){
            resp.getWriter().println("welcome user admin");
        }else{
            resp.getWriter().println("user not privlege");
        }

        System.out.println("username = "+username+" , "+"password = "+password);


    }

}

<html>
  <head>
    <meta charset="UTF-8">
    <title>Title</title>
  </head>
<body>
    <form action="Login">
        <p><input type="username" name="username"></p>
        <p><input type="password" name="password"></p>
        <p><button style="margin-left: 50px">登录</button></p>
    </form>

</body>
</html>

用户名密码正确