刚刚在做Hibernate相关的内容的时候，之前数据库里面是没有数据表的，直接写方法往一个不存在的表里面添加数据这种做法是没有问题的，因为我在hibernate.cfg.xml配置文件里面写了自动创建表了，配置如下：
<!-- 指定指定生成数据表策略 -->
<property name="hbm2ddl.auto">update</property>可是却出现了一个问题：
org.hibernate.exception.SQLGrammarException: could not execute statementat org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:80)at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:211)at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:96)at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:58)at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3032)at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3558)at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:98)at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:492)at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:197)at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:181)at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:216)at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:334)at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:289)at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:195)at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:126)at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:209)at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55)at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:194)at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49)at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:715)at org.hibernate.internal.SessionImpl.save(SessionImpl.java:707)at org.hibernate.internal.SessionImpl.save(SessionImpl.java:702)at cn.cloudspace.hibernate.helloworld.HibernateTest.test(HibernateTest.java:52)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:498)at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)at org.junit.runners.ParentRunner.run(ParentRunner.java:363)at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:89)at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:541)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:763)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:463)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:209)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'hibernate5.news' doesn't existat sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)at java.lang.reflect.Constructor.newInstance(Constructor.java:423)at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)at com.mysql.jdbc.Util.getInstance(Util.java:408)at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:943)at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3970)at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3906)at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2524)at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2677)at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2549)at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1861)at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2073)at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2009)at com.mysql.jdbc.PreparedStatement.executeLargeUpdate(PreparedStatement.java:5098)at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1994)at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:208)... 45 more经过查资料发现问题还是出现在我的配置hibernate.cfg.xml文件里面，因为配置的方言和数据库版本不一样而导致的。我的配置文件里面出现了这样的一句配置：
<!-- Hibernate的方言 -->
<property name="dialect">org.hibernate.dialect.MySQLInnoDBDialect</property>如果你的配置配置文件里面也有这样的一句话，并且你也遇到了上面的问题，那么，你不妨将上面的这就话先注释掉，看看问题能不能得到解决。我注释了以后就没有任何问题了。
或者这样：
MySql5.0之前的配置<property name="dialect">org.hibernate.dialect.MySQLDialect</property>MySql5.0之后的配置
<property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>