java +mybatis 获取oracle存储的blob对象

1.创建用于接收blob类型的实体类

@Getter
@Setter
public class FileEntity implements Serializable {
    private static final long serialVersionUID = -5544560514334406226L;
    //附件类型
    private String fileType;
    //附件
    private byte[] blob;
}

2.在mybaits xml 文件中 配置resultMap

  <resultMap id="fileResultMap" type="com.domains.entity.FileEntity">
        <result column="BB10" property="fileType"></result>
        <result column="FJ" property="blob" jdbcType="BLOB" typeHandler="org.apache.ibatis.type.BlobTypeHandler"></result>
    </resultMap>

3.SQL语句

 <select id="getBlob" resultMap="fileEntityResultMap">
        select BB10,FJ from cb10 where cb100=#{uuid}
    </select>

blob 类型或被

org.apache.ibatis.type.BlobTypeHandler 转换成 byte[] 并赋值给实体类