【Hibernate错误解决办法】Could not execute JDBC batch update； Data too long for column 'name' at row 1

        刚开始学Hibernate，于是在网上找了几个教程学习，按照教程完成程序编辑，但是运行时，一直出现下面的错误：

Exception in thread "main" org.hibernate.exception.DataException: Could not execute JDBC batch update
	at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:77)
	at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
	at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:253)
	at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:237)
	at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:141)
	at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
	at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
	at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
	at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
	at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
	at org.bromon.zizz.pojo.dao.UserInfoDao.insert(UserInfoDao.java:56)
	at org.bromon.zizz.pojo.dao.UserInfoDao.main(UserInfoDao.java:67)
Caused by: java.sql.BatchUpdateException: Data truncation: Data too long for column 'name' at row 1
	at com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:1981)
	at com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1388)
	at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
	at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:246)
	... 9 more
Caused by: com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'name' at row 1
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4224)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4158)
	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2615)
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2776)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2840)
	at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2082)
	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2334)
	at com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:1933)
	... 12 more

        在网上找了好多解决办法，都是设置数据库编码格式的问题，但是设置之后还是出现问题，找了好久终于发现了问题，问题出现在User.hbm.xml中有这么一句 <generator class="uuid.hex" />，它的意思是将产生一个32位长度的字符串作为主键，而我的主键设置的长度是20，都快哭了，网上的各种教程解析的不清楚对于新手来说真是一种折磨，希望可以帮到同样困惑的新手