[Spring] mybatis에서 selectKey

[Spring] mybatis에서 selectKey

<insert id="mapper.id" parameterClass="java.util.HashMap">
    <selectKey resultType="int" keyProperty="col" order="BEFORE">
        SELECT MAX(col1)+1 FROM table        
    </selectKey> 

    INSERT INTO 
    table (
         col1
        ,col2
    )
    VALUES (
        #{col1}
        ,#{col2}
    )
</insert>