启动时出现Hibernate异常 [英] Hibernate exception on startup

问题描述

我刚开始学习Hibernate。为此我写了一个简单的Java程序。
但是当我尝试执行程序时，我遇到了异常。

  2014年4月30日1:54： 18 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager< clinit> 
 INFO：HCANN000001：Hibernate Commons Annotations {4.0.4.Final} 
 Apr 30，2014 1:54:18 PM org.hibernate.Version logVersion 
 INFO：HHH000412：Hibernate Core {4.3 .5.Final} 
线程main中的异常java.lang.ExceptionInInitializerError $ b $ org.hibernate.cfg.Configuration.reset（Configuration.java:324）
 org.hibernate。 cfg.Configuration。< init>（Configuration.java:289）
 at org.hibernate.cfg.Configuration。< init>（Configuration.java:293）
 at com.hiber.main。 Main.main（Main.java:19）
导致：java.lang.NullPointerException 
在org.hibernate.internal.util.ConfigHelper.getResourceAsStream（ConfigHelper.java:170）
 at org.hibernate.cfg.Environment。< clinit>（Environment.java:221）
 ... 4 more 
  

以下是程序：

  package com.hiber.main; 
 
 import javax.naming.NamingException; 
 
 import org.hibernate.Session; 
 import org.hibernate.SessionFactory; 
 import org.hibernate.boot.registry.StandardServiceRegistryBuilder; 
导入org.hibernate.cfg.Configuration; 
 import org.hibernate.service.ServiceRegistry; 
 $ b $ public class main {
 
 public static void main（String [] args）throws NamingException {
 // SessionFactory sessionFactory = new Configuration（）。configure（） .buildSessionFactory（new StandardServiceRegistryBuilder（）。build（））; 
 
 ServiceRegistry serviceRegistry; 
 SessionFactory sessionFactory; 
 
配置配置=新配置（）; 
 configuration.configure（/ com / hiber / main / hibernate.cfg.xml）; 
 serviceRegistry = new StandardServiceRegistryBuilder（）。applySettings（configuration.getProperties（））。build（）; 
 sessionFactory = configuration.buildSessionFactory（serviceRegistry）; 
 
 Session sess = sessionFactory.getCurrentSession（）; 
 sessionFactory.openSession（）; 
 sess.beginTransaction（）; 
 
 Test1 t = new Test1（）; 
 t.setTest1Ind（1）; 
 t.setName（name）; 
 t.setPassword（abcd1234）; 
 sess.saveOrUpdate（t）; 
 
 sess.getTransaction（）。commit（）; 
 sess.close（）; 
 
 
 
 
 $ b  

以下是cfg xml：

 <！DOCTYPE hibernate-configuration PUBLIC -  // Hibernate / Hibernate Configuration DTD 3.0 / / ENhttp://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd\"> 
< hibernate-configuration> 
< session-factory> 
< property name =hibernate.connection.driver_class> com.mysql.jdbc.Driver< / property> 
< property name =hibernate.connection.password> root1234< / property> 
< property name =hibernate.connection.url> jdbc：mysql：// localhost：3306 / test< / property> 
< property name =hibernate.connection.username>根< / property> 
< property name =hibernate.default_schema> test< / property> 
< property name =hibernate.dialect> org.hibernate.dialect.MySQLDialect< / property> 
< property name =current_session_context_class>线程< / property> 
< / session-factory> 
< / hibernate-configuration> 
  

我已经包含了所有的依赖关系。希望我没有错过任何东西。
目前无法添加图片。

请任何人看看代码，并且想一想这里可能会出现什么问题。
在此先感谢。

解决方案

1删除项目中的依赖关系。
2添加正确的依赖关系（jar）。

I have just started learning Hibernate. For that I have written a simple Java Program. But when I try to execute the program I am getting following exception.

Apr 30, 2014 1:54:18 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {4.0.4.Final}
Apr 30, 2014 1:54:18 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {4.3.5.Final}
Exception in thread "main" java.lang.ExceptionInInitializerError
    at org.hibernate.cfg.Configuration.reset(Configuration.java:324)
    at org.hibernate.cfg.Configuration.<init>(Configuration.java:289)
    at org.hibernate.cfg.Configuration.<init>(Configuration.java:293)
    at com.hiber.main.Main.main(Main.java:19)
Caused by: java.lang.NullPointerException
    at org.hibernate.internal.util.ConfigHelper.getResourceAsStream(ConfigHelper.java:170)
    at org.hibernate.cfg.Environment.<clinit>(Environment.java:221)
    ... 4 more

Following is the program:

package com.hiber.main;

import javax.naming.NamingException;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;

public class Main {

    public static void main(String[] args) throws NamingException {
        //SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory(new StandardServiceRegistryBuilder().build());

        ServiceRegistry serviceRegistry;
        SessionFactory sessionFactory;

        Configuration configuration = new Configuration();
        configuration.configure("/com/hiber/main/hibernate.cfg.xml");
        serviceRegistry = new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()).build();
        sessionFactory = configuration.buildSessionFactory(serviceRegistry);

        Session sess = sessionFactory.getCurrentSession();
        sessionFactory.openSession();
        sess.beginTransaction();

        Test1 t = new Test1();
        t.setTest1Ind(1);
        t.setName("name");
        t.setPassword("abcd1234");
        sess.saveOrUpdate(t);

        sess.getTransaction().commit();
        sess.close();


    }

}

Following is the cfg xml:

<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.password">root1234</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.default_schema">test</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="current_session_context_class">thread</property>
    </session-factory>
</hibernate-configuration>

I have included all the dependencies. Hopefully I haven't missed anything. Can't add image currently.

Please anyone have a look at the code and spare a thought on what might be going wrong here. Thanks in advance.

解决方案

1 Remove the dependencies in your project. 2 Add the right dependencies (jars).

这篇关于启动时出现Hibernate异常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！