Data truncation: Data too long for column 'id' at row 1

 原因：并不是数据库中字段长度设置太小的原因，是字符集的问题。

可以插入中文，但对某些不常见的字符( 比如  · »  空白符号  空格 ) 就会出现 Data too long for column

修改方案：设置id的生成方式为uuid，让主键有内容就可以了 。

Caused by: org.hibernate.exception.DataException: Could not execute JDBC batch update
 at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:102)
 at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
 at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:275)
 at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:268)
 at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:184)
 at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
 at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
 at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216)
 at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:383)
 at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:133)
 at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:656)
 ... 28 more
Caused by: java.sql.BatchUpdateException: Data truncation: Data too long for column 'id' at row 1
 at com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:1269)
 at com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:955)
 at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeBatch(NewProxyPreparedStatement.java:1723)
 at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:70)
 at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:268)
 ... 36 more