MyBatis参数类型Object，且属性中含有List

总之一句话，传递多个参数，要么用Map，要么用Bean

Mapper接口定义

	int batchInsert2(@Param("st1")String st1,@Param("st2")String st2,@Param("st3")String st3, @Param("directions") List directions);
	int batchInsert1(@Param("st")Station st, @Param("directions") List directions);
	int batchInsert(@Param("st")Station st);

Bean定义

public class Station{
   
    private String stationId;

    private List directions;

XML实现

  
insert into DIRECTION(ID,STATION_ID,DIRECTION_ID,DIRECTION_NAME,DIRECTION_DESC)
select CONCAT(#{st1,jdbcType=VARCHAR},DIRECTION_ID) ID, #{st2,jdbcType=VARCHAR} STATION_ID, DIRECTION_ID,CODEDESC DIRECTION_NAME,CODEDESC DIRECTION_DESC from(
  
        select #{item.directionId,jdbcType=VARCHAR} DIRECTION_ID
      
)a,t_sys_code b
where a.DIRECTION_ID = b.CODE 
and a.DIRECTION_ID not in(select DIRECTION_ID from DIRECTION where STATION_ID = #{st3,jdbcType=VARCHAR}) 
  
  

  
insert into DIRECTION(ID,STATION_ID,DIRECTION_ID,DIRECTION_NAME,DIRECTION_DESC)
select CONCAT(#{st.stationId,jdbcType=VARCHAR},DIRECTION_ID) ID, #{st.stationId,jdbcType=VARCHAR} STATION_ID, DIRECTION_ID,CODEDESC DIRECTION_NAME,CODEDESC DIRECTION_DESC from(
  
        select #{item.directionId,jdbcType=VARCHAR} DIRECTION_ID
      
)a,t_sys_code b
where a.DIRECTION_ID = b.CODE 
and a.DIRECTION_ID not in(select DIRECTION_ID from DIRECTION where STATION_ID = #{st.stationId,jdbcType=VARCHAR}) 
  

  
insert into DIRECTION(ID,STATION_ID,DIRECTION_ID,DIRECTION_NAME,DIRECTION_DESC)
select CONCAT(#{st.stationId,jdbcType=VARCHAR},DIRECTION_ID) ID, #{st.stationId,jdbcType=VARCHAR} STATION_ID, DIRECTION_ID,CODEDESC DIRECTION_NAME,CODEDESC DIRECTION_DESC from(
  
        select #{item.directionId,jdbcType=VARCHAR} DIRECTION_ID
      
)a,t_sys_code b
where a.DIRECTION_ID = b.CODE 
and a.DIRECTION_ID not in(select DIRECTION_ID from DIRECTION where STATION_ID = #{st.stationId,jdbcType=VARCHAR}) 
  

最初使用的方法1,batchInsert2的定义，那时候基本上是一个字符串变量，一个数组变量。这次SQL中是三次用到StationID，此时需要在参数中定义三次StationID的字符串变量

于是方法2，尝试使用Station类型的变量，在SQL中需要使用#{参数名.属性名}

进而方法2中，List变量是使用 “参数名.属性名” 的方式来引用

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看看之间的定义，另做参考

  
  
    insert into auth_menu (menu_id,authority_id)   
    values  
      
        (#{authId,jdbcType=INTEGER},#{menuId})