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  • Hibernate(二):MySQL server version for the right syntax to use near 'type=InnoDB' at line x

    目前使用的hibernate5.2.9版本,配置的mysql方言为:

    <property name="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</property>

    使用的表更新策略为:

    <property name="hibernate.hbm2ddl.auto">create</property>

    可是每次执行都出现了以下错误:

    INFO: HHH000423: Disabling contextual LOB creation as JDBC driver reported JDBC version [3] less than 4
    Hibernate: 
        
        drop table if exists NEWS
    四月 15, 2017 1:38:33 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@180e6ac4] 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 NEWS (
           ID integer not null auto_increment,
            AUTHOR varchar(255),
            CONTENT varchar(255),
            CREATEDATE datetime,
            primary key (ID)
        ) type=InnoDB
    四月 15, 2017 1:38:33 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@305f031] 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.
    四月 15, 2017 1:38:33 下午 org.hibernate.tool.schema.internal.ExceptionHandlerLoggedImpl handleException
    WARN: GenerationTarget encountered exception accepting command : Error executing DDL via JDBC Statement
    org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL 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:309)
        at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:445)
        at com.dx.hibernate5.test.HelloWord.main(HelloWord.java:40)
    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=InnoDB' at line 7
        at 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:403)
        at com.mysql.jdbc.Util.getInstance(Util.java:378)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1031)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:957)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3361)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3295)
        at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1852)
        at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1975)
        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2470)
        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2399)
        at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:718)
        at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:54)
        ... 11 more

    根据提示很显然得知:这是MySQL的版本问题导致的问题。

    实际上,在MySQL5.0以前,type=InnoDB是有效的SQL语句,但是自己用的是MySQL5.7版本,type=InnoDB不再有效了。

    解决办法就是修改hibernate.cfg.xml中的dialect属性,将  

    <property name="dialect">org.hibernate.dialect.MySQLInnoDBDialect</property>

    修改为

    <property name="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>

    再次运行,发现可以自动建表了。

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  • 原文地址:https://www.cnblogs.com/yy3b2007com/p/6714092.html
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