ssm mybatis 传参的两种写法

1.

在dao层使用注解

User findMsgByThree(@Param("name")String name,@Param("age")String age,@Param("idNum")String idNum);

在配置文件中

select * from user where name = #{name} and age = #{age} and idNum = #{idNum};

2.

dao层正常写，在配置文件中

select * from user where name = #{0} and age = #{1} and idNum = #{2};