MyBatis系列目录--3. Mybatis注解

1. PlayerDao注解方式实现

Java代码  

1. package com.sohu.tv.mapper;
2. import java.util.List;
3. import org.apache.ibatis.annotations.Delete;
4. import org.apache.ibatis.annotations.Select;
5. import org.apache.ibatis.annotations.Update;
6. import org.apache.ibatis.annotations.Insert;
7. import com.sohu.tv.bean.Player;
8. /**
9. * 注解方式实现PlayerDao
10. * @author leifu
11. * @Date 2015年7月28日
12. * @Time 上午10:16:39
13. */
14. public interface PlayerAnnotationDao {
15. @Insert("insert into players(name, age) values(#{name}, #{age})")
16. public int savePlayer(Player player);
17. @Delete("delete from players where id=#{id}")
18. public int deletePlayer(int id);
19. @Update("update players set name=#{name},age=#{age} where id=#{id}")
20. public int updatePlayer(Player player);
21. @Select("select id,name,age from players where id=#{id}")
22. public Player getPlayerById(int id);
23. @Select("select id,name,age from players")
24. public List<Player> selectAllPlayers();
25. }

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

Xml代码  

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

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

【java框架源码下载】

3. 单元测试：

Java代码  

1. package com.sohu.tv.test.mapper;
2. import java.util.List;
3. import org.apache.ibatis.session.SqlSession;
4. import org.junit.After;
5. import org.junit.Before;
6. import org.junit.Test;
7. import com.sohu.tv.bean.Player;
8. import com.sohu.tv.mapper.PlayerAnnotationDao;
9. /**
10. * mybatis-annotation实现方式配置
11. *
12. * @author leifu
13. * @Date 2015年7月28日
14. * @Time 上午9:54:07
15. */
16. public class PlayerMapperAnnotationTest extends BaseTest {
17. private SqlSession sqlSession;
18. @Before
19. public void before() {
20. sqlSession = sessionFactory.openSession(true);
21. }
22. @After
23. public void after() {
24. sqlSession.close();
25. }
26. @Test
27. public void testGetPlayer() {
28. PlayerAnnotationDao playerAnnotationDao = sqlSession.getMapper(PlayerAnnotationDao.class);
29. Player player = playerAnnotationDao.getPlayerById(1);
30. System.out.println(player);
31. }
32. @Test
33. public void testInsertPlayer() {
34. PlayerAnnotationDao playerAnnotationDao = sqlSession.getMapper(PlayerAnnotationDao.class);
35. playerAnnotationDao.savePlayer(new Player(-1, "carlos", 34));
36. }
37. @Test
38. public void testDeletePlayer() {
39. PlayerAnnotationDao playerAnnotationDao = sqlSession.getMapper(PlayerAnnotationDao.class);
40. playerAnnotationDao.deletePlayer(4);
41. }
42. @Test
43. public void testUpdatePlayer() {
44. PlayerAnnotationDao playerAnnotationDao = sqlSession.getMapper(PlayerAnnotationDao.class);
45. playerAnnotationDao.updatePlayer(new Player(3, "ronaldo", 39));
46. }
47. @Test
48. public void testSelectAllPlayers() {
49. PlayerAnnotationDao playerAnnotationDao = sqlSession.getMapper(PlayerAnnotationDao.class);
50. List<Player> playerList = playerAnnotationDao.selectAllPlayers();
51. if (playerList != null && !playerList.isEmpty()) {
52. System.out.println("playerList size: " + playerList.size());
53. for (Player player : playerList) {
54. System.out.println(player);
55. }
56. }
57. }
58. }

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);
            }
        }
    }
}