package com.white.web;

import com.white.pojo.User;
import com.white.service.impl.UserServiceImpl;

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

public class RegistServlet extends HttpServlet {

    private UserServiceImpl userService = new UserServiceImpl();

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//        super.doPost(req, resp);
//        1.RegistServlet程序接受注册请求
        String username = req.getParameter("username");
        String password = req.getParameter("password");
        String call = req.getParameter("tell");
        String code = req.getParameter("code");

        if("abcd".equalsIgnoreCase(code)){
            if (userService.existsUsername(username)){
                System.out.println("用户名["+username+"]已经存在！");
                req.getRequestDispatcher("/pages/regist.html").forward(req,resp);//返回注册界面
                //不可用
            }else{
                userService.registUser(new User(null,username,password,call));
                System.out.println("注册成功");
                System.out.println("用户名为["+username+"]欢迎");
                req.getRequestDispatcher("/pages/regist_success.html").forward(req,resp);
            }
//        2.检测验证码是否正确
//        3.检测用户名是否可用
        }
        else {
            //调回注册页面
            System.out.println("验证码错误["+ code +"]错误");
            req.getRequestDispatcher("/pages/regist.html").forward(req,resp);
        }

//        3.1可用 调用service保存到数据库
//        3.2不可用调回注册页面

    }
}

package com.white.web;

import com.white.pojo.User;
import com.white.service.UserService;
import com.white.service.impl.UserServiceImpl;

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

public class LoginServlet extends HttpServlet {
    private UserService userService = new UserServiceImpl();
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//            1.获取请求
        String username = req.getParameter("username");
        String password = req.getParameter("password");
        User loginUser = userService.login(new User(null,username,password,null));
        //如果等于null，说明登录失败
        if (loginUser == null){
            //调回登录界面
            System.out.println("登录失败");
            req.getRequestDispatcher("/pages/login_false.html").forward(req,resp);

        }
        else
        {
            //登录成功
            System.out.println("登录成功");
            req.getRequestDispatcher("/pages/login_true.html").forward(req,resp);
        }

//            2.调用service.xxx处理业务
//            3.login()方法返回处理结果判断是否成功
//            成功条到成功页面
//            失败返回登录界面
    }
}