mybatis 存取blob

实体类定义 

 private byte[] content;

xml文件

<result column="CONTENT" property="content" jdbcType="BLOB" />

INSERT   INTO t_table (CONTENT) VALUES (#{content,jdbcType=BLOB})

存入

String content = request.getParameter("content");
setContent(content.getBytes());

取出

Blob b = new SerialBlob(getContent());
String content = new String(b.getBytes(1, (int) b.length()));