1 Array

<select id="queryPojoById" parameterType="String[]" resultMap="pojo">  
    select * from t_table where id in  
    <foreach collection="array" index="index" item="id" open="(" separator="," close=")">  
        #{id}  
    </foreach>  
</select> 

2 list

<select id="queryPojoById" parameterType="list" resultMap="pojo">  
    select * from t_table where id in  
    <foreach collection="list" index="index" item="id" open="(" separator="," close=")">  
        #{id}  
    </foreach>  
</select> 
 

3 Map

<select id="queryPojoById" parameterType="map" resultMap="pojo">  
    select * from t_table where id in  
    <foreach collection="ids" index="index" item="id" open="(" separator="," close=")">  
        #{id}  
    </foreach>  
</select> 

這裏的ids指的的是你放入map裏面的key

MyBatis paramType類型為集合