mybatis传参的几种方式

    第一种：按序列传参

Public User selectUser(String name,String area);

< select  id= "selectUser"  resultMap= "BaseResultMap" >
    select  *  from  user_user_t   where user_name = #{0}  and  user_area=#{1}
select >

第二种：基本数据类型（parameterType="xxx"）(接口方法声明参数中可使用注解@param(“xx”),一个参数时可以不用加@param，多个参数是就要用@param了。)
List tList = teacherMapper.selectTeacher(2);

 select * from Teacher where c_id=#{id}

第三种：JAVA实体类
Teacher queryTeacher=new Teacher(); queryTeacher.setId(2); List tList = teacherMapper.selectTeacher(queryTeacher);

   select * from Teacher where c_id=#{id}

第四种：Map
Map map=new HasMap(); map.put("id","2"); map.put("sex","男"); List tList = teacherMapper.selectTeacher(map);

   select * from Teacher where c_id=#{id} and sex=#{sex}