Java org.hibernate.internal.util.config.ConfigurationException: 无法找到 cfg.xml 资源 [/HibernateTest/src/hibernate.cfg.xml]

Question

提问by nitishpisal

I am trying to connect to Postgresql9.1 in ubuntu with pgadmin3. My Pgadmin3 GUI tool does not give any option to create tables by right clicking the database, but it is available in some videos I saw. Therefore, I used terminal to create the database and it showed up in pgadmin3.

我正在尝试使用 pgadmin3 在 ubuntu 中连接到 Postgresql9.1。我的 Pgadmin3 GUI 工具没有提供任何通过右键单击数据库来创建表的选项，但它在我看到的一些视频中可用。因此，我使用终端来创建数据库并显示在 pgadmin3 中。

my file structure

我的文件结构

My Userdetails file

我的用户详细信息文件

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;
    }
}

My HibernateCaller file

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();
        }
    }

}

Hibernate.cfg.xml

休眠文件.cfg.xml

    <?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC 
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN" 
        "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> 
<!--
  ~ 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 <http://www.gnu.org/licenses/lgpl-2.1.html>.
  -->
<hibernate-configuration>

  <session-factory>
    <!-- Database connection settings -->
    <property name="connection.driver_class">org.postgresql.Driver  </property>
    <property name="connection.url">jdbc:postgresql://localhost:5432/hiber</property>
    <property name="connection.username">nitish</property>
    <property name="connection.password"></property>

    <!-- JDBC connection pool (use the built-in) -->
    <property name="connection.pool_size">1</property>

    <!-- SQL dialect -->
    <property name="dialect">org.hibernate.dialect.PostgreSQLDialect</property>

    <!-- Enable Hibernate's automatic session context management -->
    <property name="current_session_context_class">thread</property>

    <!-- Disable the second-level cache  -->
    <property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>

    <!-- Echo all executed SQL to stdout -->
    <property name="show_sql">true</property>

    <!-- Drop and re-create the database schema on startup -->
    <property name="hbm2ddl.auto">create</property>

    <mapping class="org.nitish.hiber.UserDetails"/>
  </session-factory>
</hibernate-configuration>

I am getting following error

我收到以下错误

Mar 1, 2016 9:02:48 AM org.hibernate.cfg.Environment <clinit>
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)

After making few changes (could not use session.close() in finally block I think that should not cause this error)

进行一些更改后（无法在 finally 块中使用 session.close() 我认为这不应导致此错误）

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 <clinit>
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 <clinit>
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

采纳答案by v.ladynev

If you have your hibernate.cfg.xmlin the root of the source folder, just do

如果您hibernate.cfg.xml在源文件夹的根目录中，请执行

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

If it is in the package, for an example in the org.nitish.caller, specify path by this way

如果是在包中，例如在中org.nitish.caller，通过这种方式指定路径

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

You need to close the session(in the finallyblock). Don't forget to add rollbackcode.

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

Please, add @Tableannotation to the UserDetails.

请@Table在UserDetails.

Update

更新

The reason of the error that Hibernate can't find org.postgresql.Driverclass. It resides in postgresql jar. You have that jar at your image, but may be you don't add it to the classpath. Refer How to Add JARs to Project Build Paths in Eclipse (Java).

Hibernate 找不到org.postgresql.Driver类的错误原因。它驻留在 postgresql jar 中。您的图像中有那个 jar，但可能是您没有将它添加到类路径中。请参阅如何将 JAR 添加到 Eclipse (Java) 中的项目构建路径。

To close a sessionin the finallyblock you need to have sessionvariable outside the tryblock.

要关闭块中的a session，finally您需要session在try块外有变量。

    Session session = sessionFactory.openSession();

    try{

    } finally {
        session.close();
   }

Answer 2

回答by Visruth

new Configuration().configure()takes hibernate.cfg.xmlfrom root of class path directory. new Configuration().configure("/com/company/project/hibernate.cfg.xml")takes from root of class path + com/company/project/hibernate.cfg.xml.

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

If you are using different file name for hibernate configuration from root of class path, then eg: new Configuration().configure("/database.cfg.xml")

如果您在类路径的根目录中使用不同的文件名进行休眠配置，则例如： new Configuration().configure("/database.cfg.xml")

If you want to give the full system path of the configuration file then new Configuration().configure(new File("/home/visruth/config/hibernate.cfg.xml))which takes the configuration file from the given exact location.

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

Answer 3

回答by ASH

I fixed this by moving my config file to src/main/resources. This is the standard directory for configuration files like hibernate.cfg.xml or hibernate.properties or application related properties files.

我通过将我的配置文件移动到src/main/resources. 这是配置文件（如 hibernate.cfg.xml 或 hibernate.properties 或与应用程序相关的属性文件）的标准目录。

Answer 4

回答by Parth Mehta

All the previous answers are perfect. However, if u need a really quick solution then I would recommend you to just put your hibernate.cfg.xml file in your source folder and write

之前的所有答案都是完美的。但是，如果您需要一个非常快速的解决方案，那么我建议您将 hibernate.cfg.xml 文件放在源文件夹中并写入

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

This is simple and works!

这很简单而且有效！

Answer 5

回答by Mohamed Anees A

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

This solved the error for me!

这为我解决了错误！

Java org.hibernate.internal.util.config.ConfigurationException: 无法找到 cfg.xml 资源 [/HibernateTest/src/hibernate.cfg.xml]

提问by nitishpisal

采纳答案by v.ladynev

回答by Visruth

回答by ASH

回答by Parth Mehta

回答by Mohamed Anees A

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Java org.hibernate.internal.util.config.ConfigurationException: 无法找到 cfg.xml 资源 [/HibernateTest/src/hibernate.cfg.xml]

提问by nitishpisal

采纳答案by v.ladynev

回答by Visruth

回答by ASH

回答by Parth Mehta

回答by Mohamed Anees A

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