org.hibernate.internal.util.config.ConfigurationException：找不到cfg.xml资源

我正在尝试使用pgadmin3连接到ubuntu中的Postgresql9.1。 我的Pgadmin3 GUI工具没有通过右键单击数据库来提供创建表的任何选项，但在我看到的一些video中可以使用它。 因此，我使用终端创建数据库，它出现在pgadmin3中。

我的文件结构

我的Userdetails文件

package org.nitish.hiber; import javax.persistence.Entity; import javax.persistence.Id; @Entity public class UserDetails { @Id private int userId; private String userName; public int getUserId() { return userId; } public void setUserId(int userId) { this.userId = userId; } public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } } 

我的HibernateCaller文件

 package org.nitish.caller; import org.hibernate.HibernateException; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; import org.nitish.hiber.UserDetails; public class HibernateTest { public static void main(String[] args) { UserDetails user = new UserDetails(); user.setUserId(1); user.setUserName("First User"); try { SessionFactory sessionFactory = new Configuration().configure("/HibernateTest/src/hibernate.cfg.xml").buildSessionFactory(); Session session = sessionFactory.openSession(); session.beginTransaction(); session.save(user); session.getTransaction().commit(); } catch(HibernateException e) { e.printStackTrace(); } } } 

的hibernate.cfg.xml

    <!-- ~ Hibernate, Relational Persistence for Idiomatic Java ~ ~ License: GNU Lesser General Public License (LGPL), version 2.1 or later. ~ See the lgpl.txt file in the root directory or . -->    org.postgresql.Driver  jdbc:postgresql://localhost:5432/hiber nitish   1  org.hibernate.dialect.PostgreSQLDialect  thread  org.hibernate.cache.internal.NoCacheProvider  true  create    

我收到了以下错误

 Mar 1, 2016 9:02:48 AM org.hibernate.cfg.Environment  INFO: HHH000206: hibernate.properties not found Mar 1, 2016 9:02:48 AM org.hibernate.cfg.Environment buildBytecodeProvider INFO: HHH000021: Bytecode provider name : javassist org.hibernate.internal.util.config.ConfigurationException: Could not locate cfg.xml resource [/HibernateTest/src/hibernate.cfg.xml] at org.hibernate.boot.cfgxml.internal.ConfigLoader.loadConfigXmlResource(ConfigLoader.java:53) at org.hibernate.boot.registry.StandardServiceRegistryBuilder.configure(StandardServiceRegistryBuilder.java:163) at org.hibernate.cfg.Configuration.configure(Configuration.java:259) at org.nitish.caller.HibernateTest.main(HibernateTest.java:17) 

做了一些更改后（在finally块中无法使用session.close（）我认为不应该导致此错误）

 Mar 1, 2016 10:13:34 AM org.hibernate.Version logVersion INFO: HHH000412: Hibernate Core {5.1.0.Final} Mar 1, 2016 10:13:34 AM org.hibernate.cfg.Environment  INFO: HHH000206: hibernate.properties not found Mar 1, 2016 10:13:34 AM org.hibernate.cfg.Environment buildBytecodeProvider INFO: HHH000021: Bytecode provider name : javassist Mar 1, 2016 10:13:34 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. Mar 1, 2016 10:13:35 AM org.hibernate.annotations.common.reflection.java.JavaReflectionManager  INFO: HCANN000001: Hibernate Commons Annotations {5.0.1.Final} Mar 1, 2016 10:13:35 AM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!) 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 org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:724) at org.nitish.caller.HibernateTest.main(HibernateTest.java:17) Caused by: org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [org.postgresql.Driver] at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:229) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.loadDriverIfPossible(DriverManagerConnectionProviderImpl.java:161) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildCreator(DriverManagerConnectionProviderImpl.java:117) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:73) 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.engine.jdbc.env.internal.JdbcEnvironmentInitiator.buildJdbcConnectionAccess(JdbcEnvironmentInitiator.java:145) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:66) 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) ... 14 more Caused by: java.lang.ClassNotFoundException: Could not load requested class : org.postgresql.Driver at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl$AggregatedClassLoader.findClass(ClassLoaderServiceImpl.java:217) at java.lang.ClassLoader.loadClass(ClassLoader.java:323) at java.lang.ClassLoader.loadClass(ClassLoader.java:268) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:274) at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:226) ... 25 more 

Answer 1

如果您在源文件夹的根目录中有hibernate.cfg.xml ，那就行了

 SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory(); 

如果它在包中，对于org.nitish.caller中的org.nitish.caller ，请通过这种方式指定path

  SessionFactory sessionFactory = new Configuration() .configure("/org/nitish/caller/hibernate.cfg.xml").buildSessionFactory(); 

您需要关闭session （在finally块中）。 不要忘记添加rollback代码。

请将@Table注释添加到UserDetails 。

更新

Hibernate无法找到org.postgresql.Driver类的错误的原因。 它驻留在postgresql jar中。 你的图像上有那个jar，但可能是你没有将它添加到类路径中。 请参阅如何在Eclipse（Java）中将JAR添加到项目构建路径 。

要关闭finally块中的session ，您需要在try块之外设置session变量。

  Session session = sessionFactory.openSession(); try{ } finally { session.close(); } 

Answer 2

new Configuration().configure()从类路径目录的根目录获取hibernate.cfg.xml 。 new Configuration().configure("/com/company/project/hibernate.cfg.xml")取自类路径+ com / company / project / hibernate.cfg.xml的根目录 。

如果从类路径的根目录使用不同的文件名进行hibernate配置，那么例如： new Configuration().configure("/database.cfg.xml")

如果要提供配置文件的完整系统路径，则new Configuration().configure(new File("/home/visruth/config/hibernate.cfg.xml))从给定的确切位置获取配置文件。

Answer 3

我通过将配置文件移动到src/mail/resources来修复此问题。 对我来说，这是根目录。

Answer 4

以前的所有答案都很完美。 但是，如果你需要一个非常快速的解决方案，那么我建议你只需将你的hibernate.cfg.xml文件放在你的源文件夹中然后写

 SessionFactory sessionFactory = new Configuration().configure("hibernate.cfg.xml").buildSessionFactory(); 

这很简单，有效！

Answer 5

 new Configuration().configure(new File("hibernate.cfg.xml")).buildSessionFactory()); 

这解决了我的错误！