update用法：

　　1.接口類中添加的方法：

int updateById(SysUser sysUser);

　　2.映射文件中添加的代碼：

<update id="updateById">UPDATE sys_userSET user_name=#{userName},user_password=#{userPassword},user_email=#{userEmail},user_info=#{userInfo},head_img=#{headImg,jdbcType=BLOB},create_time=#{createTime,jdbcType=TIMESTAMP}WHERE id=#{id}</update>

　　3.測(cè)試代碼：

public void testInsert(){SqlSession sqlSession = getSqlSession();try{UserMapper userMapper = sqlSession.getMapper(UserMapper.class);SysUser user = new SysUser();user.setUserName("test2");user.setUserPassword("123456");user.setUserEmail("test@mybatis.tk");user.setUserInfo("test info");user.setHeadImg(new byte[]{1,2,3});user.setCreateTime(new Date());int result = userMapper.insert(user);Assert.assertEquals(1,result);Assert.assertNull(user.getId());}finally {sqlSession.rollback();sqlSession.close();}}

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delete用法：

　　1.接口類中添加的方法：

int deleteById(Long id);int deleteById(SysUser sysUser);

　　2.映射文件中添加的代碼：

<delete id="deleteById">DELETE FROM sys_user WHERE id = #{id}</delete><delete id="deleteById2">DELETE FROM sys_user WHERE id = #{id}</delete>

　　3.測(cè)試代碼：

@Testpublic void testUpdateById(){SqlSession sqlSession = getSqlSession();try{UserMapper userMapper = sqlSession.getMapper(UserMapper.class);SysUser user = userMapper.selectById(1L);Assert.assertEquals("admin",user.getUserName());user.setUserName("junjie");user.setUserPassword("123456");user.setUserEmail("junjie@mybatis.tk");user.setUserInfo("junjie test info");int result = userMapper.updateById(user);Assert.assertEquals(1,result);user=userMapper.selectById(1L);Assert.assertEquals("junjie",user.getUserName());}finally {sqlSession.commit();sqlSession.close();}}public void testDeleteById(){SqlSession sqlSession = getSqlSession();try{UserMapper userMapper = sqlSession.getMapper(UserMapper.class);SysUser user = userMapper.selectById(1L);//System.out.println();//Assert.assertNotNull(user);//Assert.assertEquals(1,userMapper.deleteById(1L));//SysUser user2 = userMapper.selectById(1001L);//Assert.assertNotNull(user2);//Assert.assertEquals(1,userMapper.deleteById(user2));//Assert.assertNull(userMapper.selectById(1001L));}finally {sqlSession.rollback();sqlSession.close();}}

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轉(zhuǎn)載于:https://www.cnblogs.com/junjie2019/p/10569745.html

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