GenerationTarget 遇到异常接受命令：通过 JDBC 语句执行 DDL 时出错
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【中文标题】GenerationTarget 遇到异常接受命令：通过 JDBC 语句执行 DDL 时出错【英文标题】：GenerationTarget encountered exception accepting command : Error executing DDL via JDBC Statement 【发布时间】：2017-09-10 11:16:44 【问题描述】：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
当我在休眠 5.2.9 版本中运行我的独立程序时出现异常。但在 hibernate 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。
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
<?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
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)
【问题讨论】：
【参考方案1】：您应该尝试不同的方言，例如org.hibernate.dialect.MySQL5Dialect 或 org.hibernate.dialect.MySQLMyISAMDialect 或 org.hibernate.dialect.MySQLInnoDBDialect，看看哪种方言适合您。
总而言之，您当前的方言正在生成，type=MyISAM 而应该是，ENGINE=MyISAM 在创建表查询中。
mysql error 'TYPE=MyISAM'
你也应该阅读这篇文章，Why do I need to configure the SQL dialect of a data source?
您的日志显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 命令提示符下执行该查询，以查看这是否适用于您的 MySQL 版本。
另外，请务必指定您的 MySQL 版本。
希望对你有帮助！！
【讨论】：
成功了！我尝试了第一种方言 -org.hibernate.dialect.MySQL5Dialect，它奏效了！谢谢！
我正在使用 mysql 8.0.21 。没有一种方言适合我
我正在使用 Mysql 5.7 他们都不适合我
我在 macos 10.15 catalina 中使用 mysql 8.0.27，无论如何方言对我不起作用 ='(【参考方案2】：
您使用的是MySQL 的更新版本，但使用的是旧 dialect
使用任一，
<property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
或
<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。
【讨论】：
救命答案【参考方案3】：您遇到此错误的原因可能是以下任何原因：-
DB Script 中的列名和模型/实体类不同。 在提及属性值时，您的配置文件中存在拼写错误。 MySQL 版本与您提到的方言不匹配。我遇到了这个错误，因为我更改了 DATABASE SCRIPT 中的列名，但忘记在 Model/Entity 类中更改它。因此，经过 4 个小时的努力，我只是这样做了，我的应用程序就开始运行了。
【讨论】：
【参考方案4】：hibernate 配置 XML 文件中的更改。
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>
【讨论】：
【参考方案5】：如果它在 spring boot 应用程序中，请插入以下属性。
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL57Dialect
否则，如果您使用了单独的配置文件，则包含以下代码
properties.put("hibernate.dialect", "org.hibernate.dialect.MySQL57Dialect");
【讨论】：
【参考方案6】：检查您的属性值错误。
有时会发生这种情况，您只是忘记了 Dialec 中的 't'，它必须是 Dialect，只是拼写错误或您的配置中存在价值类型的错误。
【讨论】：
【参考方案7】：我遇到了同样的问题。实际上，这是方言问题，尽管 Sabir 提供的任何选项都没有帮助我（尊重），但将其从 MySQL5Dialect 更改为 MySQL8Dialect 帮助我解决了这个问题。
如果上面提供的上述 3 个选项都不起作用，请选择 MySQL8Dialect。
希望这会有所帮助。
【讨论】：
【参考方案8】：当我尝试将 Spring Boot 应用程序连接到 Google Cloud MySQL DB 时，还有一种方言变体对我有用：org.hibernate.dialect.MySQL5InnoDBDialect
【讨论】：
【参考方案9】：我遇到了同样的问题，我使用方言作为 MySqlDialect。
我通过将方言更改为 org.hibernate.dialect.MySQL57Dialect 解决了这个问题，并创建了表。
【讨论】：
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