GenerationTarget遇到异常接受命令:通过JDBC语句执行DDL时出错

Question

我是hibernate世界的新手,面对,

WARN: GenerationTarget encountered exception accepting command : Error executing DDL via JDBC Statement
org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL via JDBC Statement

我在hibernate 5.2.9版本中运行我的独立程序时出现异常.但是在hibernate 4版本中我的代码运行良好.我寻找了许多问题并解决了但我没有得到的答案.

配置文件

hibernate.cfg.xml

    <hibernate-configuration>
      <session-factory>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.connection.password">admin</property>
        <property name="hibernate.connection.pool_size">20</property>
        <property name="hibernate.show_sql">true</property>
        <property name="hibernate.hbm2ddl.auto">create</property>
        <mapping class="com.test.hibernate14417.MyTable"></mapping>
      </session-factory>
    </hibernate-configuration>

的pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.test</groupId>
    <artifactId>Hibernate14417</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>
    <repositories>
    </repositories>
    <dependencies>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.2.9.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.1-api</artifactId>
            <version>1.0.0.Final</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>4.3.1.Final</version>
        </dependency>
        <dependency>
            <groupId>net.sourceforge.jtds</groupId>
            <artifactId>jtds</artifactId>
            <version>1.3.1</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>3.1.11</version>
        </dependency>
    </dependencies>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>
</project>

实用文件

package com.test.hibernate14417;

import org.hibernate.SessionFactory;
import org.hibernate.boot.Metadata;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.service.ServiceRegistry;


public class ExecuteUtil {
    private static final SessionFactory SESSION_FACTORY=buildSessionFactory();

    private static SessionFactory buildSessionFactory() {
        try {
            ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder()
                    .configure("hibernate.cfg.xml").build();

            Metadata metadata = new MetadataSources(serviceRegistry).buildMetadata();

            return metadata.getSessionFactoryBuilder().build();

        } catch (Throwable ex) {
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }

    }

    public static SessionFactory getSESSION_FACTORY() {
        return SESSION_FACTORY;
    }

    public static void shutdown(){
        getSESSION_FACTORY().close();
    }

}

实体文件

package com.test.hibernate14417;

import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;




@Entity
public class MyTable implements Serializable {

    @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
    private int id;

    private String name;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }



}

主要方法

package com.test.hibernate14417;

import org.hibernate.Session;
import org.hibernate.SessionFactory;


public class Main {
    public static void main(String[] args) {

        MyTable mt=new MyTable();
        mt.setName("Man");

        SessionFactory sessionFactory=ExecuteUtil.getSESSION_FACTORY();

        Session session=sessionFactory.getCurrentSession();


        try {
          session.getTransaction().begin();

          session.save(mt);

          session.getTransaction().commit();

           session.close();
           sessionFactory.close();

        } catch (Exception e) {
            System.out.println(e.getStackTrace());
            session.getTransaction().rollback();
        }


    }

安慰

cd D:\Netbeans\Hibernate14417; "JAVA_HOME=C:\\Program Files\\Java\\jdk1.8.0_121" cmd /c "\"\"C:\\Program Files\\NetBeans 8.2\\java\\maven\\bin\\mvn.bat\" -Dexec.args=\"-classpath %classpath com.test.hibernate14417.Main\" -Dexec.executable=\"C:\\Program Files\\Java\\jdk1.8.0_121\\bin\\java.exe\" -Dmaven.ext.class.path=\"C:\\Program Files\\NetBeans 8.2\\java\\maven-nblib\\netbeans-eventspy.jar\" -Dfile.encoding=UTF-8 org.codehaus.mojo:exec-maven-plugin:1.2.1:exec\""
Running NetBeans Compile On Save execution. Phase execution is skipped and output directories of dependency projects (with Compile on Save turned on) will be used instead of their jar artifacts.
Scanning for projects...

------------------------------------------------------------------------
Building Hibernate14417 1.0-SNAPSHOT
------------------------------------------------------------------------

--- exec-maven-plugin:1.2.1:exec (default-cli) @ Hibernate14417 ---
Apr 14, 2017 10:41:51 AM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.2.9.Final}
Apr 14, 2017 10:41:51 AM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
Apr 14, 2017 10:41:53 AM org.hibernate.boot.jaxb.internal.stax.LocalXmlResourceResolver resolveEntity
WARN: HHH90000012: Recognized obsolete hibernate namespace http://hibernate.sourceforge.net/hibernate-configuration. Use namespace http://www.hibernate.org/dtd/hibernate-configuration instead.  Support for obsolete DTD/XSD namespaces may be removed at any time.
Apr 14, 2017 10:41:54 AM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
Apr 14, 2017 10:41:54 AM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!)
Apr 14, 2017 10:41:54 AM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001005: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:3306/test]
Apr 14, 2017 10:41:54 AM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001001: Connection properties: {user=root, password=****}
Apr 14, 2017 10:41:54 AM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001003: Autocommit mode: false
Apr 14, 2017 10:41:54 AM org.hibernate.engine.jdbc.connections.internal.PooledConnections <init>
INFO: HHH000115: Hibernate connection pool size: 20 (min=1)
Apr 14, 2017 10:41:55 AM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
Apr 14, 2017 10:41:55 AM org.hibernate.engine.jdbc.env.internal.LobCreatorBuilderImpl useContextualLobCreation
INFO: HHH000423: Disabling contextual LOB creation as JDBC driver reported JDBC version [3] less than 4
Hibernate: drop table if exists hibernate_sequence
Apr 14, 2017 10:41:58 AM org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl getIsolatedConnection
INFO: HHH10001501: Connection obtained from JdbcConnectionAccess [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess@24111ef1] for (non-JTA) DDL execution was not in auto-commit mode; the Connection 'local transaction' will be committed and the Connection will be set into auto-commit mode.
Hibernate: drop table if exists MyTable
Hibernate: create table hibernate_sequence (next_val bigint) type=MyISAM
Apr 14, 2017 10:41:58 AM org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl getIsolatedConnection
INFO: HHH10001501: Connection obtained from JdbcConnectionAccess [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess@531f4093] 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.
Apr 14, 2017 10:41:58 AM 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.test.hibernate14417.ExecuteUtil.buildSessionFactory(ExecuteUtil.java:29)
    at com.test.hibernate14417.ExecuteUtil.<clinit>(ExecuteUtil.java:20)
    at com.test.hibernate14417.Main.main(Main.java:21)
Caused by: java.sql.SQLException: 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 com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2926)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1571)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1666)
    at com.mysql.jdbc.Connection.execSQL(Connection.java:2972)
    at com.mysql.jdbc.Connection.execSQL(Connection.java:2902)
    at com.mysql.jdbc.Statement.execute(Statement.java:529)
    at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:54)
    ... 13 more

Hibernate: insert into hibernate_sequence values ( 1 )
Apr 14, 2017 10:41:58 AM 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.test.hibernate14417.ExecuteUtil.buildSessionFactory(ExecuteUtil.java:29)
    at com.test.hibernate14417.ExecuteUtil.<clinit>(ExecuteUtil.java:20)
    at com.test.hibernate14417.Main.main(Main.java:21)
Caused by: java.sql.SQLException: Table 'test.hibernate_sequence' doesn't exist
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2926)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1571)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1666)
    at com.mysql.jdbc.Connection.execSQL(Connection.java:2972)
    at com.mysql.jdbc.Connection.execSQL(Connection.java:2902)
    at com.mysql.jdbc.Statement.execute(Statement.java:529)
    at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:54)
    ... 13 more

Hibernate: create table MyTable (id integer not null, name varchar(255), primary key (id)) type=MyISAM
Apr 14, 2017 10:41:58 AM 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.test.hibernate14417.ExecuteUtil.buildSessionFactory(ExecuteUtil.java:29)
    at com.test.hibernate14417.ExecuteUtil.<clinit>(ExecuteUtil.java:20)
    at com.test.hibernate14417.Main.main(Main.java:21)
Caused by: java.sql.SQLException: 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 com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2926)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1571)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1666)
    at com.mysql.jdbc.Connection.execSQL(Connection.java:2972)
    at com.mysql.jdbc.Connection.execSQL(Connection.java:2902)
    at com.mysql.jdbc.Statement.execute(Statement.java:529)
    at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:54)
    ... 13 more

Apr 14, 2017 10:41:58 AM org.hibernate.tool.schema.internal.SchemaCreatorImpl applyImportSources
INFO: HHH000476: Executing import script 'org.hibernate.tool.schema.internal.exec.ScriptSourceInputNonExistentImpl@7776ab'
Exception in thread "main" org.hibernate.HibernateException: No CurrentSessionContext configured!
    at org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:454)
    at com.test.hibernate14417.Main.main(Main.java:23)

Answer 1

您应该尝试使用org.hibernate.dialect.MySQL5DialectOR org.hibernate.dialect.MySQLMyISAMDialectOR之类的其他方言org.hibernate.dialect.MySQLInnoDBDialect来查看哪种方言适合您.

总而言之,当前的方言产生,type=MyISAM而应该是,ENGINE=MyISAM在创建表查询.

mysql错误'TYPE = MyISAM'

您也应该阅读此内容,为什么我需要配置数据源的SQL方言？

您的日志表示此查询已尝试执行,create table MyTable (id integer not null, name varchar(255), primary key (id)) type=MyISAM 因此您应该尝试直接在mysql命令提示符上执行该查询,以查看它是否适用于您的MySQL版本.

另外,有问题请指定您的MySQL版本.

希望能帮助到你 !!

Answer 2

您使用的是更新版本，MySQL但使用的是旧版本 dialect

使用任一，

<property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>

或者

<property name="hibernate.dialect">org.hibernate.dialect.MySQL8Dialect</property>

在hibernate.cfg.xml文件中。

这可以防止您遇到dialect问题。

Answer 3

您遇到此错误的原因可能是以下任何原因：-

• DB脚本和模型/实体类中的列名称不同。
• 您的配置文件在提及属性值时存在拼写错误。
• MySQL 版本与您提到的方言不匹配。

我遇到此错误是因为我更改了数据库脚本中的列名称，但忘记在模型/实体类中更改它。因此，经过 4 个小时的拉扯我的头发后，我简单地这样做了，我的应用程序开始运行。