有报这个错的童鞋，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 。sql语句有问题，仔细检查，特别是每一行前面要加一个空格，因为字符串连接sql语句的时候会没有空格，举例：select * from mytable;和select*frommytable,第一种才能正常被解析，第二种会报错
