说来惭愧，MySQL我已经在只将用于，非常赞赏阶段。
甚至一些比较深层次的管理，不熟悉如何，我们要加强啊！
最近。系统测试，使用MySQL数据库，你需要在表上创建触发器。该数据库是安装在机。但。在任何情况下，你不能创建触发器，如以下背景错误消息：
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 错误 [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)
分析错误信息：TRIGGER command denied to user 'root'@'mortimer-PC' for table 't_user'，看起来是不同意root用户在t_user表上运行TRIGGER命令。为啥不同意？
分析下，首先怀疑是否驱动的问题。由于，驱动确实存在不匹配的问题，驱动的版本号较低（针对5.0），而服务器版本号为5.5。替换驱动之后问题依然。
其次，分析错误信息本身。不同意运行神马命令。看起来貌似是权限问题。Navicat连接数据库。查看用户权限，发现用户“root@%”的“Trigger”一栏未选中！而此次连接的用户，看起来是“root@mortimer-PC”，因此。“root@localhost”的规则，貌似不会生效，预计是此原因，造成无法创建触发器。
调整“root@%”用户的权限，选中“Trigger”柱，重启MySQL服务，另一个连接MySQL，创建触发器，OK。
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