1、spring中@Param(org.springframework.data.repository.query.Param)
int selectRoleCount(@Param("businessId") Integer businessId,@Param("memberId") Long
2、mybatis中param(org.apache.ibatis.annotations.Param)
int selectRoleCount(@Param("businessId") Integer businessId,@Param("memberId") Long
从表面上看,两种并没有区别,但是在xml文件中使用的时候是有区别的,Spring中的@param在xml需要如下这样引用变量:
<select id="selectRoleCount" resultType="java.lang.Integer" >
select
count(tbm.id)
from t_business_member_relation tbm
where tbm.business_id = #{0,jdbcType=INTEGER}
and tbm.member_id = #{1,jdbcType=INTEGER}
and tbm.role_business_id is not null
</select>
是根据参数的顺序来取值的,并且从0开始。而在mybatis @param在xml中则是如下这样引用变量的
<select id="selectRoleCount" resultType="java.lang.Integer" >
select
count(tbm.id)
from t_business_member_relation tbm
where tbm.business_id = #{businessId,jdbcType=INTEGER}
and tbm.member_id = #{memberId,jdbcType=INTEGER}
and tbm.role_business_id is not null
</select>
是通过参数名来引用的 注:如果Mapper.java文件中引用的是Spring的
注:如果Mapper.java文件中引用的是Spring的
org.springframework.data.repository.query.Param;
但是Mapper.xml中使用的是mybatis 的用法,那么就会如下的错误
org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter 'businessId' not found. Available parameters are [1, 0, param1, param2]标签:business,businessId,spring,Param,tbm,mybatis,id From: https://blog.51cto.com/u_15773967/5751860