我在hibernate.cfg.xml配置文件中添加了自动创建表的的属性:(这样当数据库中没有此表是,hibernate就会自动帮我们创建一张表)
<property name="hbm2ddl.auto">create</property>
但是当执行的时候出现报错:
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect Hibernate: drop table if exists student 十月 08, 2018 3:42:47 下午 org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl getIsolatedConnection INFO: HHH10001501: Connection obtained from JdbcConnectionAccess [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess@7882c44a] for (non-JTA) DDL execution was not in auto-commit mode; the Connection 'local transaction' will be committed and the Connection will be set into auto-commit mode. Hibernate: create table student (id integer not null, name varchar(255), age integer, primary key (id)) type=MyISAM 十月 08, 2018 3:42:47 下午 org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl getIsolatedConnection INFO: HHH10001501: Connection obtained from JdbcConnectionAccess [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess@4bf324f9] for (non-JTA) DDL execution was not in auto-commit mode; the Connection 'local transaction' will be committed and the Connection will be set into auto-commit mode. 十月 08, 2018 3:42:47 下午 org.hibernate.tool.schema.internal.ExceptionHandlerLoggedImpl handleException WARN: GenerationTarget encountered exception accepting command : Error executing DDL "create table student (id integer not null, name varchar(255), age integer, primary key (id)) type=MyISAM" via JDBC Statement org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL "create table student (id integer not null, name varchar(255), age integer, primary key (id)) type=MyISAM" via JDBC Statement at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:67) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.applySqlString(SchemaCreatorImpl.java:440) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.applySqlStrings(SchemaCreatorImpl.java:424) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.createFromMetadata(SchemaCreatorImpl.java:315) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.performCreation(SchemaCreatorImpl.java:166) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.doCreation(SchemaCreatorImpl.java:135) at org.hibernate.tool.schema.internal.SchemaCreatorImpl.doCreation(SchemaCreatorImpl.java:121) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:155) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:72) at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:310) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:467) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:708) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:724) at hibernateTest.Test1.main(Test1.java:18) Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'type=MyISAM' at line 1 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) 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:3973) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2527) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2483) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2441) at com.mysql.jdbc.StatementImpl.executeInternal(StatementImpl.java:845) at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:745) at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:54) ... 13 more 十月 08, 2018 3:42:47 下午 org.hibernate.tool.schema.internal.SchemaCreatorImpl applyImportSources INFO: HHH000476: Executing import script 'org.hibernate.tool.schema.internal.exec.ScriptSourceInputNonExistentImpl@3c443976' Hibernate: insert into student (name, age, id) values (?, ?, ?) 十月 08, 2018 3:42:47 下午 org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions WARN: SQL Error: 1146, SQLState: 42S02 十月 08, 2018 3:42:47 下午 org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions ERROR: Table 'student.student' doesn't exist 十月 08, 2018 3:42:47 下午 org.hibernate.internal.ExceptionMapperStandardImpl mapManagedFlushFailure ERROR: HHH000346: Error during managed flush [org.hibernate.exception.SQLGrammarException: could not execute statement] Exception in thread "main" javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute statement at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154) at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181) at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188) at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1460) at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:511) at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3283) at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2479) at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:473) at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:178) at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:39) at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:271) at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:98) at hibernateTest.Test1.main(Test1.java:24) Caused by: org.hibernate.exception.SQLGrammarException: could not execute statement at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:63) at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99) at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:178) at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3171) at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3686) at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:90) at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604) at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:478) at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:356) at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:39) at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1454) ... 9 more Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'student.student' doesn't exist at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) 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:3973) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2527) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2487) at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1858) at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2079) at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2013) at com.mysql.jdbc.PreparedStatement.executeLargeUpdate(PreparedStatement.java:5104) at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1998) at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:175) ... 17 more
通过查找问题发现,其实是支持mysql的版本问题:
把:
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
改为:就可以了
<property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>