[学习交流] 【成都校区】WebServlet 的 login 方法

WebServlet 的 login 方法

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package Servlet;

import Dao.UserDao;
import domain.User;

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;

/**
 * @Author: hr947x
 * @Date: 2019/1/16 14:35
 * @Description: 登录服务
 */
@WebServlet("/login")
public class login extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // 设置 request 编码
        request.setCharacterEncoding("utf-8");
        // 读取的 request 中的用户名与密码
        String username = request.getParameter("username");
        String password = request.getParameter("password");
        // 创建 User 对象
        User loginUser = new User();
        loginUser.setUsername(username);
        loginUser.setPassword(password);
        // 创建 UserDao 对象
        UserDao dao = new UserDao();
        User user = dao.login(loginUser);
        if (user != null) {
            // 非空表示登录成功
            //  - 将 user 加入 request 中
            request.setAttribute("user", user);
            //  - 将 request 转发
            request.getRequestDispatcher("/success").forward(request, response);
        } else {
            request.setAttribute("info_", "123456222222");
            request.getRequestDispatcher("/fail").forward(request, response);
        }
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request, response);
    }
}

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[学习交流] 【成都校区】WebServlet 的 login 方法

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