Java Hibernate和MySQL配置

我花了几个小时试图设置我的第一个Hibernate应用程序，但它仍然不起作用

我有WAMP服务器和MySQL数据库，称为“hibernatetest”。我在Eclipse中有一个项目，它包含Hibernate库和mysql-connector-java-5.1.18-bin.jar。我还参加了以下课程：

HibernateUtil.java：

import org.hibernate.SessionFactory;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;

public class HibernateUtil {

    private static final SessionFactory sessionFactory = buildSessionFactory();

    private static SessionFactory buildSessionFactory() {
        try {
            // Create the SessionFactory from hibernate.cfg.xml
            return new Configuration().configure().buildSessionFactory(
                new StandardServiceRegistryBuilder().build() );
        }
        catch (Throwable ex) {
            // Make sure you log the exception, as it might be swallowed
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }

    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }

}

java（包含main）：

Album.java：

package templates;

public class Album {
    private int ID;
    private String title;
    private String artist;
    private String label;

    public Album(){

    }

    public int getID() {
        return ID;
    }

    public void setID(int iD) {
        ID = iD;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getArtist() {
        return artist;
    }

    public void setArtist(String artist) {
        this.artist = artist;
    }

    public String getLabel() {
        return label;
    }

    public void setLabel(String label) {
        this.label = label;
    }

}

Album.hbm.xml：

Hibernate.cfg.xml：

堆栈跟踪：

wrz 15, 2015 10:04:47 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.0.1.Final}
wrz 15, 2015 10:04:47 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
wrz 15, 2015 10:04:47 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
wrz 15, 2015 10:04:47 PM 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.
wrz 15, 2015 10:04:48 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.0.0.Final}
wrz 15, 2015 10:04:49 PM org.hibernate.engine.jdbc.connections.internal.ConnectionProviderInitiator initiateService
WARN: HHH000181: No appropriate connection provider encountered, assuming application will be supplying connections
wrz 15, 2015 10:04:49 PM org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator initiateService
WARN: HHH000342: Could not obtain connection to query metadata : The application must supply JDBC connections
Initial SessionFactory creation failed.org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
Exception in thread "main" java.lang.ExceptionInInitializerError
    at HibernateUtil.buildSessionFactory(HibernateUtil.java:18)
    at HibernateUtil.<clinit>(HibernateUtil.java:7)
    at test.main(test.java:13)
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:244)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:208)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:189)
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:217)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:189)
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes(MetadataBuildingProcess.java:352)
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:111)
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.build(MetadataBuildingProcess.java:83)
    at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:418)
    at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:87)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:692)
    at HibernateUtil.buildSessionFactory(HibernateUtil.java:12)
    ... 2 more
Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:100)
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:54)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:88)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:234)
    ... 15 more

wrz 152015 10:04:47 PM org.hibernate.Version logVersion
信息：hh000412:Hibernate核心{5.0.1.Final}
wrz 152015 10:04:47 PM org.hibernate.cfg.Environment
信息：HH000206:找不到hibernate.properties
wrz 152015 10:04:47 PM org.hibernate.cfg.Environment buildBytecodeProvider
信息：HH000021:字节码提供程序名称：javassist
wrz 152015 10:04:47 PM org.hibernate.boot.jaxb.internal.stax.LocalXmlResourceResolver解析实体
警告：HH90000012:已识别过时的hibernate命名空间http://hibernate.sourceforge.net/hibernate-configuration. 使用名称空间http://www.hibernate.org/dtd/hibernate-configuration 相反对过时的DTD/XSD命名空间的支持可以随时删除。
wrz 152015 10:04:48 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager
信息：HCANN000001:Hibernate Commons注释{5.0.0.Final}
wrz 152015 10:04:49 PM org.hibernate.engine.jdbc.connections.internal.ConnectionProviderInitiator initiateService
警告：HH000181:假设应用程序将提供连接，则未遇到适当的连接提供程序
wrz 152015 10:04:49 PM org.hibernate.engine.jdbc.env.internal.jdbc环境启动器initiateService
警告：HH000342:无法获取查询元数据的连接：应用程序必须提供JDBC连接
初始SessionFactory创建失败。org.hibernate.service.spi.ServiceException:无法创建请求的服务[org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
线程“main”java.lang.ExceptionInInitializeError中出现异常
位于HibernateUtil.buildSessionFactory（HibernateUtil.java:18）
在HibernateUtil。（HibernateUtil.java:7）
at test.main（test.java:13）
原因：org.hibernate.service.spi.ServiceException:无法创建请求的服务[org.hibernate.engine.jdbc.env.spi.jdbc环境]
位于org.hibernate.service.internal.AbstractServiceRegistryImpl.createService（AbstractServiceRegistryImpl.java:244）
位于org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService（AbstractServiceRegistryImpl.java:208）
位于org.hibernate.service.internal.AbstractServiceRegistryImpl.getService（AbstractServiceRegistryImpl.java:189）
位于org.hibernate.engine.jdbc.internal.jdbcservicesiml.configure（jdbcservicesiml.java:51）
位于org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService（StandardServiceRegistryImpl.java:94）
位于org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService（AbstractServiceRegistryImpl.java:217）
位于org.hibernate.service.internal.AbstractServiceRegistryImpl.getService（AbstractServiceRegistryImpl.java:189）
位于org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes（MetadataBuildingProcess.java:352）
位于org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete（MetadataBuildingProcess.java:111）
位于org.hibernate.boot.model.process.spi.MetadataBuildingProcess.build（MetadataBuildingProcess.java:83）
位于org.hibernate.boot.internal.MetadataBuilderImpl.build（MetadataBuilderImpl.java:418）
位于org.hibernate.boot.internal.MetadataBuilderImpl.build（MetadataBuilderImpl.java:87）
位于org.hibernate.cfg.Configuration.buildSessionFactory（Configuration.java:692）
位于HibernateUtil.buildSessionFactory（HibernateUtil.java:12）
... 还有两个
原因：org.hibernate.HibernateException:未设置“hibernate.dialogue”时，对方言解析信息的访问不能为空
位于org.hibernate.engine.jdbc.dialogue.internal.dialoguefactorympl.determineDialect（dialoguefactorympl.java:100）
位于org.hibernate.engine.jdbc.dialogue.internal.dialogueFactoryImpl.buildDialogue（dialogueFactoryImpl.java:54）
位于org.hibernate.engine.jdbc.env.internal.jdbconvironmentinitiator.initiateService（jdbconvironmentinitiator.java:137）
位于org.hibernate.engine.jdbc.env.internal.jdbconvironmentinitiator.initiateService（jdbconvironmentinitiator.java:35）
位于org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService（StandardServiceRegistryImpl.java:88）
位于org.hibernate.service.internal.AbstractServiceRegistryImpl.createService（AbstractServiceRegistryImpl.java:234）
... 还有15个

---

我做错了什么？

正如错误所说，您需要在hibernate.cfg文件中指定方言

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

org.hibernate.dialogue.mysqldialogue

我注意到一些可能导致故障的因素：

1） 在

hibernate.cfg.xml中，您没有为连接指定密码。您可以在此处添加
your\u Pass\u
属性（或者是出于隐私原因而添加的？）

2） 正如@Prerak Tiwari所提到的，您没有指定方言。正如他在
org.hibernate.dialogue.mysqldialogue
属性中提到的那样

3） 我注意到你们房产的名称与大多数人使用的不同。不要添加
…name=“hibernate.connection.driver\u class”…
ommit
hibernate.
部分，因此它应该如下所示：

<session-factory>
    <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="connection.url">jdbc:mysql://localhost/hibernatetest</property>
    <property name="connection.username">root</property>
    Your password property here...
    <property name="dialect">org.hibernate.dialect.MySQLDialect</property>

    <mapping resource="/templates/Album.hbm.xml"/>
</session-factory>


com.mysql.jdbc.Driver
jdbc：mysql://localhost/hibernatetest
根
您的密码属性在此。。。
org.hibernate.dialogue.mysqldialogue

希望其中一些对您有用：）
这就是我修复错误的方法

我的环境与您的相同
hibernate5+
，
Mysql
&
WAMP服务器

请确保您包括在此位置包含的
jta jar
。
\hibernate-release-5.0
<session-factory>
    <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="connection.url">jdbc:mysql://localhost/hibernatetest</property>
    <property name="connection.username">root</property>
    Your password property here...
    <property name="dialect">org.hibernate.dialect.MySQLDialect</property>

    <mapping resource="/templates/Album.hbm.xml"/>
</session-factory>

<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/your_db</property>

<property name="connection.password">root</property>