GenerationTarget遇到异常接受命令:通过JDBC语句执行DDL时出错 [英] GenerationTarget encountered exception accepting command : Error executing DDL via JDBC Statement

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本文介绍了GenerationTarget遇到异常接受命令:通过JDBC语句执行DDL时出错的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我是冬眠世界和面对的新手，

I am a novice in hibernate world and facing,

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

在休眠5.2.9版中运行独立程序时出现

异常.但是在休眠4版本中，我所有的代码都运行良好.我寻找了很多问题并解决了，但没有得到有效的答案.

exception while I run my stand-alone programe in hibernate 5.2.9 version. But in hibernate 4 version all my code runs well. I looked for many questions and solve but not working answer i got.

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>

Pom.xml

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>

实用程序文件

Utility file

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();
        }


    }

控制台

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)

推荐答案

您应该尝试使用其他方言，例如org.hibernate.dialect.MySQL5Dialect或org.hibernate.dialect.MySQLMyISAMDialect或org.hibernate.dialect.MySQLInnoDBDialect，以查看哪种方言适合您.

You should try a different dialects likeorg.hibernate.dialect.MySQL5Dialect OR org.hibernate.dialect.MySQLMyISAMDialect OR org.hibernate.dialect.MySQLInnoDBDialect to see which one works for you.

总而言之，在创建表查询中，您当前的方言正在生成type=MyISAM，而应该是ENGINE=MyISAM.

All in all , your current dialect is generating , type=MyISAM while it should be , ENGINE=MyISAM in create table query.

mysql错误'TYPE = MyISAM'

您也应该阅读此内容，

You should read this too , Why do I need to configure the SQL dialect of a data source?

您的日志说该查询已尝试执行，create table MyTable (id integer not null, name varchar(255), primary key (id)) type=MyISAM，因此您应尝试直接在mysql命令提示符下执行该查询，以查看该查询是否适用于您的MySQL版本.

Your logs say that this query was tried to be executed , create table MyTable (id integer not null, name varchar(255), primary key (id)) type=MyISAM so you should try to execute that query directly on mysql command prompt to see if that works for your MySQL version.

此外，有问题的也请指定您的MySQL版本.

Also, in question do specify your MySQL version too.

希望有帮助！

这篇关于GenerationTarget遇到异常接受命令:通过JDBC语句执行DDL时出错的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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