MyBatis传递多个参数

MyBatis传递多个参数

1：参数所在下标

<select id="findByIndexParams" resultMap="userMap">
select *
from t_user
where user_name = #{0} and user_sex = #{1} and user_status = #{2}
</select>

// UserMapper.java
List<User> findByIndexParams(String name, Integer sex, Integer status);

// 测试
List<User> userList = userMapper.findByIndexParams("小明", 1, 1);

2：Map方式

<select id="findByMapParams" parameterType="map" resultMap="userMap">
select *
from t_user
where user_name = #{name} and user_sex = #{sex} and user_status = #{status}
</select>

// UserMapper.java
List<User> findByMapParams(Map<String, Object> params);

// 测试
Map<String, Object> params = new HashMap<>();
params.put("name", "小明");
params.put("sex", 1);
params.put("status", 1);
List<User> userList = userMapper.findByMapParams(params);

3：@Param注解

<select id="findByAnnoParams" resultMap="userMap">
select *
from t_user
where user_name = #{name} and user_sex = #{sex} and user_status = #{status}
</select>

// UserMapper.java
List<User> findByAnnoParams(@Param("name") String name, @Param("sex") Integer sex,
@Param("status") Integer status);

// 测试
List<User> userList = userMapper.findByAnnoParams("小明", 1, 1);