原网址:http://blog.csdn.net/bigbird2012/article/details/6304417 错误现象:Packet for query is too large(1767212 > 1048576),You can change this value on the server by setting the 'max_allow_packet' variable. 解决办法:MySQL的一个系统参数:max_allowed_packet,其默认值为1048576(1