MySQL用戶權限導致的創建Trigger失敗

說來慚愧，MySQL一直處於只會用，不怎麼理解的階段。甚至是一些較為深層次的管理，都不怎麼熟悉，得加強啊！

近日，系統測試，使用MySQL數據庫，需要在某個表上創建觸發器，數據庫是在本機安裝。但是，無論如何都無法創建觸發器，後台錯誤信息如下：

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: TRIGGER command denied to user 'root'@'mortimer-PC' for table 't_user'
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
	at com.mysql.jdbc.Util.getInstance(Util.java:386)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1052)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4096)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4028)
	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2490)
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2651)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2677)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2627)
	at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:841)
	at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:681)
	at com.apusic.jdbc.adapter.StatementHandle.execute(Unknown Source)
	at com.apusic.esb.base.util.SQLUtil.createDBObjectIfNecessary(SQLUtil.java:263)
	at com.apusic.esb.base.util.SQLUtil.createDBObjectIfNecessary(SQLUtil.java:225)
	at com.apusic.esb.config.trigger.mysql.MySqlTriggerManager.createTriggersIfNecessary(MySqlTriggerManager.java:83)
	at com.apusic.esb.config.trigger.TriggerConfigManager.deploy(TriggerConfigManager.java:331)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.apusic.esb.base.communication.CommInvokeUtil.invoke(CommInvokeUtil.java:139)
	at com.apusic.esb.base.communication.CommInvokeUtil.invoke(CommInvokeUtil.java:43)
	at com.apusic.esb.base.communication.CommInvokeUtil.invoke(CommInvokeUtil.java:27)
	at com.apusic.esb.base.communication.socket.server.CommSocketServer$RequestProcessor.run(CommSocketServer.java:99)
	at com.apusic.util.ThreadPoolImpl$WorkerThread.run(Unknown Source)
2014-06-25 10:38:42 錯誤 [apusic.com.apusic.esb.config.trigger.TriggerConfigManager] 
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: TRIGGER command denied to user 'root'@'mortimer-PC' for table 't_user'
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
	at com.mysql.jdbc.Util.getInstance(Util.java:386)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1052)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4096)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4028)
	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2490)
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2651)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2677)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2627)
	at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:841)
	at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:681)
	at com.apusic.jdbc.adapter.StatementHandle.execute(Unknown Source)
	at com.apusic.esb.base.util.SQLUtil.createDBObjectIfNecessary(SQLUtil.java:263)
	at com.apusic.esb.base.util.SQLUtil.createDBObjectIfNecessary(SQLUtil.java:225)
	at com.apusic.esb.config.trigger.mysql.MySqlTriggerManager.createTriggersIfNecessary(MySqlTriggerManager.java:83)
	at com.apusic.esb.config.trigger.TriggerConfigManager.deploy(TriggerConfigManager.java:331)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.apusic.esb.base.communication.CommInvokeUtil.invoke(CommInvokeUtil.java:139)
	at com.apusic.esb.base.communication.CommInvokeUtil.invoke(CommInvokeUtil.java:43)
	at com.apusic.esb.base.communication.CommInvokeUtil.invoke(CommInvokeUtil.java:27)
	at com.apusic.esb.base.communication.socket.server.CommSocketServer$RequestProcessor.run(CommSocketServer.java:99)
	at com.apusic.util.ThreadPoolImpl$WorkerThread.run(Unknown Source)

其次，分析錯誤信息本身，不允許執行神馬命令，看起來貌似是權限問題，Navicat連接數據庫，查看用戶權限，發現用戶“root@%”的“Trigger”一欄未選中！而此次連接的用戶，看起來是“root@mortimer-PC”，因此，“root@localhost”的規則，貌似不會生效，估計是此原因，造成無法創建觸發器。

調整“root@%”用戶的權限，選中“Trigger”欄，重啟MySQL服務，重新連接MySQL，創建觸發器，OK！