错误类型：Mysql数据库异常
错误内容：
[DB] [ERROR] DBUtilAutoTran.selectMutliple error:java.sql.SQLException: 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 'null where appid=1' at line 1
解决方法：此类问题为数据库没有映射导致
'null where
where前面为空
所以意思为找不到这个表