MyBatis系列目录--3. Mybatis注解

宇文氏

转载请注明出处哈:http://carlosfu.iyunv.com/blog/2238662



 

1. PlayerDao注解方式实现

package com.sohu.tv.mapper;
import java.util.List;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;
import org.apache.ibatis.annotations.Insert;
import com.sohu.tv.bean.Player;
/**
* 注解方式实现PlayerDao
* @author leifu
* @Date 2015年7月28日
* @Time 上午10:16:39
*/
public interface PlayerAnnotationDao {
@Insert("insert into players(name, age) values(#{name}, #{age})")
public int savePlayer(Player player);
@Delete("delete from players where id=#{id}")
public int deletePlayer(int id);
@Update("update players set name=#{name},age=#{age} where id=#{id}")
public int updatePlayer(Player player);
@Select("select id,name,age from players where id=#{id}")
public Player getPlayerById(int id);
@Select("select id,name,age from players")
public List<Player> selectAllPlayers();
}

2. mybatis-base.xml添加注解相关配置

<mappers>
<mapper class="com.sohu.tv.mapper.PlayerAnnotationDao"/>
</mappers>

3. 单元测试：

package com.sohu.tv.test.mapper;
import java.util.List;
import org.apache.ibatis.session.SqlSession;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.sohu.tv.bean.Player;
import com.sohu.tv.mapper.PlayerAnnotationDao;
/**
* mybatis-annotation实现方式配置
*
* @author leifu
* @Date 2015年7月28日
* @Time 上午9:54:07
*/
public class PlayerMapperAnnotationTest extends BaseTest {
private SqlSession sqlSession;
@Before
public void before() {
sqlSession = sessionFactory.openSession(true);
}
@After
public void after() {
sqlSession.close();
}
@Test
public void testGetPlayer() {
PlayerAnnotationDao playerAnnotationDao = sqlSession.getMapper(PlayerAnnotationDao.class);
Player player = playerAnnotationDao.getPlayerById(1);
System.out.println(player);
}
@Test
public void testInsertPlayer() {
PlayerAnnotationDao playerAnnotationDao = sqlSession.getMapper(PlayerAnnotationDao.class);
playerAnnotationDao.savePlayer(new Player(-1, "carlos", 34));
}
@Test
public void testDeletePlayer() {
PlayerAnnotationDao playerAnnotationDao = sqlSession.getMapper(PlayerAnnotationDao.class);
playerAnnotationDao.deletePlayer(4);
}
@Test
public void testUpdatePlayer() {
PlayerAnnotationDao playerAnnotationDao = sqlSession.getMapper(PlayerAnnotationDao.class);
playerAnnotationDao.updatePlayer(new Player(3, "ronaldo", 39));
}
@Test
public void testSelectAllPlayers() {
PlayerAnnotationDao playerAnnotationDao = sqlSession.getMapper(PlayerAnnotationDao.class);
List<Player> playerList = playerAnnotationDao.selectAllPlayers();
if (playerList != null && !playerList.isEmpty()) {
System.out.println("playerList size: " + playerList.size());
for (Player player : playerList) {
System.out.println(player);
}
}
}
}