在复制xml文件进行修改的时候，我经常将不小心对原文件进行修改，而导致创建bean出错。报错如下所示：
Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [bean.xml]: Invocation of init method failed; nested exception is org.hibernate.exception.SQLGrammarException: Error creating DatabaseInformation for schema migration at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:753) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:446) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:328) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4727) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5189) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1107) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1841) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: org.hibernate.exception.SQLGrammarException: Error creating DatabaseInformation for schema migration at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:106) at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:109) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:95) at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:127) at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:101) at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:470) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:444) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:708) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:724) at org.springframework.orm.hibernate5.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:416) at org.springframework.orm.hibernate5.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:401) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574) ... 25 more Caused by: com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: Table 'ssh_crm.rdb$generators' doesn't exist at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:936) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2870) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1573) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1665) at com.mysql.jdbc.Connection.execSQL(Connection.java:3170) at com.mysql.jdbc.Connection.execSQL(Connection.java:3099) at com.mysql.jdbc.Statement.executeQuery(Statement.java:1169) at com.mchange.v2.c3p0.impl.NewProxyStatement.executeQuery(NewProxyStatement.java:177) at org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorLegacyImpl.extractMetadata(SequenceInformationExtractorLegacyImpl.java:42) at org.hibernate.tool.schema.extract.internal.DatabaseInformationImpl.initializeSequences(DatabaseInformationImpl.java:64) at org.hibernate.tool.schema.extract.internal.DatabaseInformationImpl.<init>(DatabaseInformationImpl.java:60) at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:123) ... 34 more 十一月 12, 2018 2:06:54 下午 org.apache.catalina.core.StandardContext startInternal 严重: One or more listeners failed to start. Full details will be found in the appropriate container log file 十一月 12, 2018 2:06:54 下午 org.apache.catalina.core.StandardContext startInternal 严重: Context [/ssh_crm02] startup failed due to previous errors 十一月 12, 2018 2:06:54 下午 org.apache.catalina.core.ApplicationContext log 信息: Closing Spring root WebApplicationContext 十一月 12, 2018 2:06:54 下午 org.apache.catalina.loader.WebappClassLoaderBase clearReferencesJdbc 警告: The web application [ssh_crm02] registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered. 十一月 12, 2018 2:06:54 下午 org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads 警告: The web application [ssh_crm02] appears to have started a thread named [C3P0PooledConnectionPoolManager[identityToken->1hgensx9z1t839g1qrvr6y|357ebd47]-AdminTaskTimer] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.lang.Object.wait(Native Method) java.util.TimerThread.mainLoop(Timer.java:552) java.util.TimerThread.run(Timer.java:505) 十一月 12, 2018 2:06:54 下午 org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads 警告: The web application [ssh_crm02] appears to have started a thread named [C3P0PooledConnectionPoolManager[identityToken->1hgensx9z1t839g1qrvr6y|357ebd47]-HelperThread-#0] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.lang.Object.wait(Native Method) com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:635) 十一月 12, 2018 2:06:54 下午 org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads 警告: The web application [ssh_crm02] appears to have started a thread named [C3P0PooledConnectionPoolManager[identityToken->1hgensx9z1t839g1qrvr6y|357ebd47]-HelperThread-#1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.lang.Object.wait(Native Method) com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:635) 十一月 12, 2018 2:06:54 下午 org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads 警告: The web application [ssh_crm02] appears to have started a thread named [C3P0PooledConnectionPoolManager[identityToken->1hgensx9z1t839g1qrvr6y|357ebd47]-HelperThread-#2] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.lang.Object.wait(Native Method) com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:635) 十一月 12, 2018 2:06:54 下午 org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads 警告: The web application [ssh_crm02] appears to have started a thread named [Timer-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.lang.Object.wait(Native Method) java.lang.Object.wait(Object.java:502) java.util.TimerThread.mainLoop(Timer.java:526) java.util.TimerThread.run(Timer.java:505)