Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'zhongfucheng.user' does

- 日理万妓 2021-09-17 06:10 277阅读 0赞

编写第一个Hibernate程序的时候，就发现出现了错误

Exception in thread "main" org.hibernate.exception.SQLGrammarException: could not insert: [zhongfucheng.domain.User]
        at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:92)
        at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
        at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:64)
        at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2327)
        at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2834)
        at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:71)
        at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:273)
        at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:320)
        at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:203)
        at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:129)
        at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210)
        at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:56)
        at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195)
        at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:50)
        at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
        at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:713)
        at org.hibernate.impl.SessionImpl.save(SessionImpl.java:701)
        at org.hibernate.impl.SessionImpl.save(SessionImpl.java:697)
        at zhongfucheng.domain.App.main(App.java:39)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:601)
        at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
    Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'zhongfucheng.user' doesn't exist
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
        at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
        at com.mysql.jdbc.Util.getInstance(Util.java:381)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1030)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3515)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3447)
        at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1951)
        at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2101)
        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2554)
        at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1761)
        at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2046)
        at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1964)
        at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1949)
        at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:94)
        at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:57)
        ... 21 more

它说是由引起的…

**因为我在配置映射关系的时候，使用了自动增长序列，而我的id字段又是为String，所以出错了！**

<id name="id" column="id">
    
                
                <generator class="native"/>
            </id>

因此，**将JavaBean对象的id设置成int类型就可以解决问题了！**

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'zhongfucheng.user' does

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