MyBatis paramType类型为集合

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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>

   这里的ids指的的是你放入map里面的key

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