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

问题描述 投票:0回答:12

我正在尝试使用 pgadmin3 连接到 ubuntu 中的 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,但在我看到的一些视频中可以使用它。因此,我使用终端创建数据库,它显示在 pgadmin3 中。

my file structure

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;
    }
}

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

    <?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>

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)

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

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 <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
java hibernate postgresql jdbc ubuntu-14.04
12个回答
14
投票

如果您的

hibernate.cfg.xml
在源文件夹的根目录中,只需执行

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

如果是在包里,以

org.nitish.caller
为例,这样指定路径

 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。

请在

@Table
添加
UserDetails
注释。

更新

Hibernate找不到

org.postgresql.Driver
类的错误原因。它驻留在 postgresql jar 中。您的图像中有该 jar,但可能您没有将其添加到类路径中。请参阅如何将 JAR 添加到 Eclipse (Java) 中的项目构建路径

要关闭

session
块中的
finally
,您需要在
session
块之外有
try
变量。

    Session session = sessionFactory.openSession();

    try{

    } finally {
        session.close();
   }

6
投票

我通过将配置文件移至

src/main/resources
来修复此问题。这是 hibernate.cfg.xml 或 hibernate.properties 等配置文件或应用程序相关属性文件的标准目录。


5
投票
new Configuration().configure(new File("hibernate.cfg.xml")).buildSessionFactory());

这解决了我的错误!


2
投票

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

如果您从类路径的根目录使用不同的文件名进行休眠配置,则例如:

new Configuration().configure("/database.cfg.xml")

如果您想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))
将从给定的确切位置获取配置文件。


1
投票

之前的所有答案都很完美。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();

这很简单而且有效!


0
投票

您必须使用文件的绝对路径,否则这将不起作用。然后,我们使用该路径构建文件并将其传递给配置。

private fun getFile(): File {
    val currentWorkingDir = System.getProperty("user.dir")
    val absoulutePath = "$currentWorkingDir/src/main/resources/secret-hibernate.cfg.xml"
    println("Absolute Path of secret-hibernate.cfg.xml: $absoulutePath")
    return File(absoulutePath)
}

https://stackoverflow.com/a/64084771/5279996

GL


0
投票

在 src/main 中创建一个名为“resources”的文件夹 将 hibernate.cfg.xml 文件放入其中 创建会话工厂对象为 SessionFactory 工厂 = new Configuration().configure().buildSessionFactory();

这将成功创建对象 您可以通过检查应该打印 false System.out.println(factory.isClosed()); 来验证它

这对我有用!


0
投票
答案就在错误(问题)的第一行,如果你仔细阅读,它说:

Could not locate cfg.xml resource

 >> 
资源

似乎在

resource

 中没有发现任何内容,或者可能是 
resource
 设置不正确

如果您使用的是 Intellij 等 IDE :

    确保将
  • hibernate.cfg.xml
     保存在 
    src/main/resources/
示例:

src/main/resources/hibernate.cfg.xml

    这很重要(我个人在 java/maven 的初始设置过程中几乎总是遇到这个问题..)
因此,请确保将

resources

 目录标记为 
资源根,以便它看起来 例如,看这张图片

如何将文件夹标记为资源根目录
之前 之后(看3行)
现在编译并构建: 将构建一个新的 jar,将所有文件与最新更改链接起来,您将不再抱怨丢失

hibernate.cfg.xml


    


0
投票

src根目录项目中创建一个文件,命名为:“hibernate.cfg.xml”。

<?xml version="1.0" encoding="UTF-8"?> <!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="connection.driver_class">com.mysql.jdbc.Driver</property> <property name="connection.url">jdbc:mysql://localhost/hibernate1</property> <property name="connection.username">hibernate1</property> <property name="connection.password">hibernate1</property> <property name="dialect">org.hibernate.dialect.MySQL5Dialect</property> <property name="hibernate.show_sql">true</property> </session-factory> </hibernate-configuration>
在你的班级

package io.yourPack; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; public class hibernateClass { public static void main(String[] args) { SessionFactory myFactory = new Configuration().configure("hibernate.cfg.xml").addAnnotatedClass(clima.class).buildSessionFactory(); Session mySession = myFactory.openSession(); try { yourClass cl1 = new yourClass("java", "1,2,3", 6); mySession.beginTransaction(); mySession.save(cl1); mySession.getTransaction().commit(); System.out.println("Inserted !!"); mySession.close(); }finally { myFactory.close(); } } }
    

0
投票
如果您使用 Maven 构建工具进行休眠配置,那么您应该使用 src/main 文件夹中的资源文件夹。它一定会解决你的问题。我也面临同样的问题


0
投票

更新 修改并写入hibernate-cfg.xml文件


0
投票
兄弟,我遇到了同样的错误,我意识到我的 src/main 中没有任何名为 resources 的文件夹,所以我只是创建了一个文件夹并在那里创建了 hibernate.cfg.xml 文件,它就可以工作了。

这是我第一次在 stackoverflow 上向某人提供解决方案,我希望它有帮助:)

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