java 读 mysql 类型Blob数据库配置 resultType parameterType

Question

mysql  类型Blob java中没有实体类 我想自己读到 byte[]里面 

<select id="New" resultType="不会填" parameterType="不会填"> 我查的我尝试填了几个 都不对 求大佬帮帮忙

Answer 1

    <resultMap id="aaMap" type="java.util.Map">
        <result column="dd" property="dd" jdbcType="BLOB"  typeHandler="org.apache.ibatis.type.BlobTypeHandler" />
    </resultMap>

    <select id="aa" resultMap="aaMap" parameterType="long">
        select dd from aa where uid =#{uid,jdbcType=BIGINT}}
    </select>