在Session工厂创建时如何解决/hibernate.cfg.xml未找到异常？

Question

我正在研究一个JBoss保险丝项目，我能够解决与JBoss fuse 6.3版本上与hibernate集成相关的大部分依赖性问题。但不幸的是，当程序尝试创建hibernate会话时，它会给出以下异常，说它无法找到/hibernate.cfg.xml文件。下图显示了我的项目结构。 Project包含resources文件夹中的hibernate.cfg.xml文件。

点应用程序的异常尝试创建会话

      JBossFuse:karaf@root> SessionFactory creation failed.org.hibernate.HibernateException: /hibernate.cfg.xml not found

整个例外与以下类似。

Caused by: java.lang.ExceptionInInitializerError
at com.demo.activemq.HibernateUtil.buildSessionFactory(HibernateUtil.java:17)[388:DemoActiveMq1:1.0.0.SNAPSHOT]
at com.demo.activemq.HibernateUtil.<clinit>(HibernateUtil.java:8)[388:DemoActiveMq1:1.0.0.SNAPSHOT]
at com.demo.activemq.OrderProcessor.process(OrderProcessor.java:18)[388:DemoActiveMq1:1.0.0.SNAPSHOT]
at org.apache.camel.processor.DelegateSyncProcessor.process(DelegateSyncProcessor.java:63)
... 45 more
Caused by: org.hibernate.HibernateException: /hibernate.cfg.xml not found
at org.hibernate.internal.util.ConfigHelper.getResourceAsStream(ConfigHelper.java:173)[346:org.hibernate.core:4.2.22.Final-redhat-1]
at org.hibernate.cfg.Configuration.getConfigurationInputStream(Configuration.java:2090)[346:org.hibernate.core:4.2.22.Final-redhat-1]
at org.hibernate.cfg.Configuration.configure(Configuration.java:2071)[346:org.hibernate.core:4.2.22.Final-redhat-1]
at org.hibernate.cfg.Configuration.configure(Configuration.java:2051)[346:org.hibernate.core:4.2.22.Final-redhat-1]
at com.demo.activemq.HibernateUtil.buildSessionFactory(HibernateUtil.java:13)[388:DemoActiveMq1:1.0.0.SNAPSHOT]
... 48 more

下面是我的HibernateUtil.java内容，这是该文件的第13行return new Configuration().configure().buildSessionFactory();

package com.demo.activemq;


import org.hibernate.SessionFactory;
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();
    } catch (Throwable ex) {
        // Make sure you log the exception, as it might be swallowed
        System.err.println("SessionFactory creation failed." + ex);
        throw new ExceptionInInitializerError(ex);
    }
}

public static SessionFactory getSessionFactory() {
    return sessionFactory;
}

public static void shutdown() {
    // Close caches and connection pools
    getSessionFactory().close();
}

}

以下是我的pom.xml文件的依赖项。

<dependency>
  <groupId>org.apache.camel</groupId>
  <artifactId>camel-core</artifactId>
  <version>2.17.0.redhat-630187</version>
</dependency>
<dependency>
  <groupId>org.apache.camel</groupId>
  <artifactId>camel-spring</artifactId>
  <version>2.17.0.redhat-630187</version>
</dependency>
<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>slf4j-api</artifactId>
</dependency>
<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>slf4j-log4j12</artifactId>
</dependency>
<dependency>
  <groupId>log4j</groupId>
  <artifactId>log4j</artifactId>
</dependency>
<dependency>
  <groupId>org.apache.camel</groupId>
  <artifactId>camel-test-spring</artifactId>
  <version>2.17.0.redhat-630187</version>
</dependency>
<dependency>
  <groupId>org.apache.cxf</groupId>
  <artifactId>cxf-core</artifactId>
  <version>3.1.8</version>
</dependency>
<dependency>
  <groupId>org.apache.cxf</groupId>
  <artifactId>cxf-api</artifactId>
  <version>2.7.11</version>
</dependency>
    <dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>4.2.22.Final-redhat-1</version>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.14</version>
</dependency>
<dependency>
  <groupId>org.apache.servicemix.bundles</groupId>
  <artifactId>org.apache.servicemix.bundles.commons-dbcp</artifactId>
  <version>1.4_3</version>
</dependency>

有没有人遇到过这种问题？我该如何解决这个问题？请善意提供有关此

的反馈

Answer 1

不推荐使用没有任何方法参数的

new Configuration().configure().buildSessionFactory()，因此你会遇到异常。

请修改您的buildSessionFactory()方法，如下所示：

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

如果遇到任何问题，请在评论中告诉我。

Answer 2

Hibernate 4.x介绍了ServiceRegistry。您的代码遵循Hibernate 3.x标准。 new Configuration().configure().buildSessionFactory()在Hibernate 3.x中有效。由于您使用的是Hibernate 4.x和hibernate.cfg.xml，因此您创建SessionFactory的代码应该是这样的：

Configuration config = new Configuration().configure();
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder()
              .applySettings(config.getProperties()).build();
SessionFactory sessionFactory = config.buildSessionFactory(serviceRegistry);

因为，如果您在configure()类中检查Configuration方法的Hibernate文档，它会说：

  

使用应用程序资源中指定的映射和属性   名为hibernate.cfg.xml。

如果您使用的是hibernate.properties文件，那么创建configuration对象的代码应该是这样的：

Configuration config = new Configuration();