org.hibernate.exception.SQLGrammarException: could not insert: [cn.com.servyou.bbs.domain.Image]
	at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:90)
	at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
	at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:64)
	at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2186)
	at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2666)
	at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:71)
	at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:279)
	at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:321)
	at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:204)
	at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:130)
	at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210)
	at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:56)
	at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195)
	at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:50)
	at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
	at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:562)
	at org.hibernate.impl.SessionImpl.save(SessionImpl.java:550)
	at org.hibernate.impl.SessionImpl.save(SessionImpl.java:546)
。。。
Caused by: com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '$T??ú2{??÷?#M`9;? ¤?2?tJp>1?÷D?<???Pm?òQ?mn?????Nè\'?.89??4…
.?\'U\0??0?' at line 1
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1051)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3562)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3494)
	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1960)
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2114)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2696)
	at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2105)
	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2398)
	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2316)
	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2301)
	at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:94)
	at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:57)
	... 17 more

?

在网上查阅了很多资料，自己也经过测试，使用纯JDBC代码进行测试，发现了这样一个问题。

?

用纯JDBC代码是可以将图片的二进制流存入数据库表的相应字段的。如果是用Hibernate存储CLOB字段是没有问题的，但是在存储BLOB字段时会出现问题。

?

错误可能的原因：

??? 1. 使用了MYSQL 的保留字作为表字段名

??? 2. 字符集的问题，需要在Hibernate配置文件中，对数据库连接URL指定编码

??? jdbc:mysql://127.0.0.1:3306/hibernate_demo?useUnicode=true&characterEncoding=utf-8

?

先给出数据库脚本及配置。。。

?

数据库表创建脚本：

?

create table t_test(
   id int(11) not null auto_increment,
   photo mediumblob,
   primary key(id)
)

?

Hibernate配置文件：

?

<?xml version="1.0" encoding="utf-8"?> 
<!DOCTYPE hibernate-configuration PUBLIC
	"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
	"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">