DAO实例代码优化

一般在接口的实现类中不用来实现登陆等功能，在测试类中实现并且测试。

 package com.beiwo.epet.service.impl;

 import com.beiwo.epet.dao.MasterDao;
 import com.beiwo.epet.dao.impl.MasterDaoMySqlImpl;
 import com.beiwo.epet.entity.Master;
 import com.beiwo.epet.service.MasterService;

 public class MasterServiceImpl2 implements MasterService {
     @Override
     public boolean login(Master master) {
         boolean isLogin = false;

         MasterDao masterDao = new MasterDaoMySqlImpl();

         Master master2 = masterDao.findMaster(master);

         if (null != master2) {
             isLogin = true;
         }

         return isLogin;
     }

     @Override
     public void login() {

     }

 }

测试类

 package com.beiwo.epet.test;

 import java.util.Scanner;

 import org.junit.Test;

 import com.beiwo.epet.entity.Master;
 import com.beiwo.epet.service.MasterService;
 import com.beiwo.epet.service.impl.MasterServiceImpl;
 import com.beiwo.epet.service.impl.MasterServiceImpl2;

 public class TestMasterDao {

     @Test
     public void testLogin(){
         MasterService masterService=new MasterServiceImpl();
         masterService.login();

     }

     @Test
     public void testLogin2(){
         Scanner scanner = new Scanner(System.in);

         // 1.输入用户名
         System.out.println("请输入用户名");
         String loginId = scanner.next();

         // 2.输入密码
         System.out.println("请输入密码");
         String password = scanner.next();

         MasterService masterService=new MasterServiceImpl2();
         Master master=new Master();
         master.setLoginId(loginId);
         master.setPassword(password);

         boolean isLogin=masterService.login(master);

         if(isLogin){
             System.out.println("登陸成功");
         }else{
             System.out.println("登陸失敗");
         }

     }

 }