线程“main”中的Hibernate异常java.lang.ExceptionInInitializerError

我是Hibernate的新品，所以请在我身上轻松点！我只是试图打开和关闭休眠会话，如下所示： Program.java如下： package com.simpleprogrammer;线程“main”中的Hibernate异常java.lang.ExceptionInInitializerError

import org.hibernate.Session; 

public class Program { 
    public static void main(String[] args) { 
     System.out.println("Hello world!"); 
     Session session = HibernateUtilities.getSessionFactory().openSession(); 
     session.close(); 
    } 
}

和我HibernateUtilities.java文件如下：

package com.simpleprogrammer; 

import org.hibernate.HibernateException; 
import org.hibernate.SessionFactory; 
import org.hibernate.cfg.Configuration; 
import org.hibernate.service.ServiceRegistry; 
import org.hibernate.service.ServiceRegistryBuilder; 

public class HibernateUtilities { 
    private static SessionFactory sessionFactory; 
    private static ServiceRegistry serviceRegistry; 

    static { 
     try 
     { 
      Configuration configuration = new Configuration().configure(); 
      serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry(); 
      sessionFactory = configuration.buildSessionFactory(serviceRegistry); 
     } 
     catch (HibernateException exception) 
     { 
      System.out.println("Problem creating session factory"); 
     } 
    } 
    public static SessionFactory getSessionFactory() 
    { 
     return sessionFactory; 
    } 
}

，最后我的hibernate.cfg.xml文件如下：

<?xml version='1.0' encoding='utf-8'?> 
<!DOCTYPE hibernate-configuration PUBLIC 
    "-//Hibernate/Hibernate Configuration DTD//EN" 
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> 
<hibernate-configuration> 
    <session-factory> 
    <property name="connection.driver_class">com.mysql.jdbc.Driver</property> 
    <property name="connection.password">password</property> 
    <property name="connection.url">jdbc:mysql://localhost:3306</property> 
    <property name="connection.username">appuser</property> 
    <property name="connection.default_schema">protien_tracker</property> 
    <property name="connection.dialect">org.hibernate.dialect.MySQLDialect</property> 
    <property name="connection.show_sql">true</property> 

     <!-- <property name="hbm2ddl.auto">update</property> --> 
    </session-factory> 
</hibernate-configuration>

当我尝试运行此，我得到一个空指针异常，堆栈跟踪如下：

"C:\Program Files\Java\jdk1.8.0_45\bin\java" -Didea.launcher.port=7537 "-Didea.launcher.bin.path=C:\Users\John Stafford\AppData\Roaming\JetBrains\IntelliJ IDEA 15.0.3\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_45\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_45\jre\lib\rt.jar;C:\Java\intellij\ProtienTracker\out\production\ProtienTracker;C:\Java\intellij\ProtienTracker\lib\hibernate-jpa-2.0-api-1.0.1.Final.jar;C:\Java\intellij\ProtienTracker\lib\antlr-2.7.7.jar;C:\Java\intellij\ProtienTracker\lib\hibernate-commons-annotations-4.0.2.Final.jar;C:\Java\intellij\ProtienTracker\lib\jboss-logging-3.1.0.GA.jar;C:\Java\intellij\ProtienTracker\lib\dom4j-1.6.1.jar;C:\Java\intellij\ProtienTracker\lib\jboss-transaction-api_1.1_spec-1.0.1.Final.jar;C:\Java\intellij\ProtienTracker\lib\javassist-3.15.0-GA.jar;C:\Java\intellij\ProtienTracker\lib\hibernate-core-4.2.2.Final.jar;C:\Java\intellij\ProtienTracker\lib\mysql-connector-java-5.0.4-bin.jar;C:\Users\John Stafford\AppData\Roaming\JetBrains\IntelliJ IDEA 15.0.3\lib\idea_rt.jar" com.intellij.rt.execution.application.AppMain com.simpleprogrammer.Program 
Hello world! 
Jan 20, 2016 9:03:37 PM org.hibernate.annotations.common.Version <clinit> 
INFO: HCANN000001: Hibernate Commons Annotations {4.0.2.Final} 
Jan 20, 2016 9:03:37 PM org.hibernate.Version logVersion 
INFO: HHH000412: Hibernate Core {4.2.2.Final} 
Jan 20, 2016 9:03:37 PM org.hibernate.cfg.Environment <clinit> 
INFO: HHH000206: hibernate.properties not found 
Jan 20, 2016 9:03:37 PM org.hibernate.cfg.Environment buildBytecodeProvider 
INFO: HHH000021: Bytecode provider name : javassist 
Jan 20, 2016 9:03:37 PM org.hibernate.cfg.Configuration configure 
INFO: HHH000043: Configuring from resource: /hibernate.cfg.xml 
Jan 20, 2016 9:03:37 PM org.hibernate.cfg.Configuration getConfigurationInputStream 
INFO: HHH000040: Configuration resource: /hibernate.cfg.xml 
Jan 20, 2016 9:03:38 PM org.hibernate.cfg.Configuration doConfigure 
INFO: HHH000041: Configured SessionFactory: null 
Jan 20, 2016 9:03:38 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure 
INFO: HHH000402: Using Hibernate built-in connection pool (not for production use!) 
Jan 20, 2016 9:03:38 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure 
INFO: HHH000115: Hibernate connection pool size: 20 
Jan 20, 2016 9:03:38 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure 
INFO: HHH000006: Autocommit mode: false 
Jan 20, 2016 9:03:38 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure 
INFO: HHH000401: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:3306] 
Jan 20, 2016 9:03:38 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure 
INFO: HHH000046: Connection properties: {user=appuser, password=****, dialect=org.hibernate.dialect.MySQLDialect, show_sql=true, default_schema=protien_tracker} 
Exception in thread "main" java.lang.ExceptionInInitializerError 
    at com.simpleprogrammer.Program.main(Program.java:11) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:497) 
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144) 
Caused by: java.lang.NullPointerException 
    at org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl.getConnection(DriverManagerConnectionProviderImpl.java:214) 
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcServicesImpl.java:242) 
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:117) 
    at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:75) 
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:159) 
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:131) 
    at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1797) 
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1755) 
    at com.simpleprogrammer.HibernateUtilities.<clinit>(HibernateUtilities.java:18) 
    ... 6 more 

Process finished with exit code 1

有人知道我在这里做错了吗？

来源

2016-01-20 user3600952

你有在库JDBC罐子？ –

将默认架构放入连接字符串中，并检查架构的名称。 protien拼写正确吗？此人还有基本的例子http://www.mkyong.com/tutorials/hibernate-tutorials/ – Bob

HI Bobf，工作！谢谢。 – user3600952

JDBC JAR如果你正在使用休眠4.3 ++，在HibernateUtilities cla中更改以下行SS。

configuration = new Configuration(); 
configuration.configure("hibernate.cfg.xml"); 

StandardServiceRegistryBuilder serviceBuilder = new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()); 
sessionFactory = configuration.buildSessionFactory(serviceBuilder.build());

，并进行以下修改hibernate.cfg.xml

<property name="connection.driver_class">com.mysql.jdbc.Driver</property> 
<property name="connection.url">jdbc:mysql://localhost:3306/protien_tracker</property> 
<property name="connection.username">appuser</property> 
<property name="connection.password">password</property> 
<property name="dialect">org.hibernate.dialect.MySQLDialect</property> 
<property name="show_sql">true</property>

来源

2016-01-21 04:24:08 Dukefirehawk

以下是用于创建会话的一个示例：HibernateUtil的

public class HibernateUtil { 

private static SessionFactory sessionFactory; 

public static SessionFactory getSessionFactory() { 

    if(sessionFactory==null) 
    { 

     try{ 
      sessionFactory = new AnnotationConfiguration(). 
         configure(). 
         //addPackage("com.xyz") //add package if used. 
         addAnnotatedClass(User.class). 
         buildSessionFactory(); 
      }catch (Throwable ex) { 
      System.err.println("Failed to create sessionFactory object." + ex); 
      throw new ExceptionInInitializerError(ex); 
      } 
    } 
    return sessionFactory; 

}

}

使用会话

public class Dao { 


public void save(Object obj) { 


    SessionFactory sessionFactory=HibernateUtil.getSessionFactory(); 
    Session session=sessionFactory.openSession(); 
    try{ 

     session.beginTransaction(); 
     session.save(obj); 
     session.getTransaction().commit(); 
     session.close(); 

    } 
    catch(Exception e) 
    { 
     e.printStackTrace(); 
    } 
} 
}

请确保您有在LIB

来源

2016-01-21 04:13:46

线程“main”中的Hibernate异常java.lang.ExceptionInInitializerError

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