诡异！ log4j查看日志显示delete语句执行成功，去查看数据库，数据没被删除，这是啥原因呢

DEBUG [http-nio-8080-exec-18] - ooo Using Connection [com.mysql.jdbc.Connection@c5dce63]

DEBUG [http-nio-8080-exec-18] - ==>  Preparing: select id,command,description,content from message 

DEBUG [http-nio-8080-exec-18] - ==> Parameters: 

DEBUG [http-nio-8080-exec-18] - <==      Total: 4

DEBUG [http-nio-8080-exec-26] - ooo Using Connection [com.mysql.jdbc.Connection@7fb8fb34]

DEBUG [http-nio-8080-exec-26] - ==>  Preparing: delete from message where id=? 

DEBUG [http-nio-8080-exec-26] - ==> Parameters: 1(Integer)

DEBUG [http-nio-8080-exec-26] - <==    Updates: 1

但是查看数据库并没有删除，不知道是什么原因。。