Bir java nesnesini bir veritabanına eşleme

Question

Bir java nesnesini veritabanına eşleştirmeyi düşünüyorum (postgres kullanıyorum). java dosyası (HibernateTest.java) çalıştırdığımda çok fazla hata gösteriyor. Bence her şey doğru. ama benim tutulumda şüpheliyim, bcoz xml'i desteklemiyor (yani renk göstermiyor, xml dosyasını bir know dosyası olarak almıyor). Ben yeni biriyim, bu yüzden onları anlayamıyorum. plz öner bana.

hibernate.cfg.xml dosya

<?xml version='1.0' encoding='utf-8'?> 

    <hibernate-configuration 
     xmlns="http://www.hibernate.org/xsd/hibernate-configuration" 
     xsi:schemaLocation="http://www.hibernate.org/xsd/hibernate-configuration hibernate-configuration-4.0.xsd" 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> 
     <session-factory> 
     <!-- Database connection settings --> 
     <property name="connection.driver_class">org.postgresql.Driver</property> 
     <property name="connection.url">jdbc:hsqldb:hsql://localhost:5432/hibernatedb</property> 
    <property name="connection.username">postgres</property> 
    <property name="connection.password">hkm@1160</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 resource="org.hibernate.hemant.dto.UDestails"/> 
    </session-factory> 
</hibernate-configuration> 

UserDetails.java dosya

package org.hibernate.hemant.dto; 
    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; 
    } 
} 

benim ana java dosya HibernateTest.java

package org.hemant.hibernate; 
    import org.hibernate.Session; 
    import org.hibernate.SessionFactory; 
    import org.hibernate.cfg.Configuration; 
    import org.hibernate.hemant.dto.UserDetails; 
    public class HibernateTest { 

    /** 
    * @param args 
    */ 
    public static void main(String[] args) { 
    UserDetails user = new UserDetails(); 
    user.setUserID(1); 
    user.setUserName("First user"); 
    SessionFactory sessionFactory = new   Configuration().configure().buildSessionFactory(); 
    Session session = sessionFactory.openSession(); 
    session.beginTransaction(); 
    session.save(user); 
    session.beginTransaction().commit(); 
} 

}

Apr 13, 2016 9:26:08 PM org.hibernate.Version logVersion 
    INFO: HHH000412: Hibernate Core {5.1.0.Final} 
    Apr 13, 2016 9:26:08 PM org.hibernate.cfg.Environment <clinit> 
    INFO: HHH000206: hibernate.properties not found 
    Apr 13, 2016 9:26:08 PM org.hibernate.cfg.Environment buildBytecodeProvider 
    INFO: HHH000021: Bytecode provider name : javassistException in thread "main" 
    Exception in thread "main" org.hibernate.internal.util.config.ConfigurationException: Unable to perform unmarshalling at line number 13 and column 63 in RESOURCE hibernate.cfg.xml. Message: cvc-elt.1: Cannot find the declaration of element 'hibernate-configuration'. 
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:133) 
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:65) 
at org.hibernate.boot.cfgxml.internal.ConfigLoader.loadConfigXmlResource(ConfigLoader.java:57) 
at org.hibernate.boot.registry.StandardServiceRegistryBuilder.configure(StandardServiceRegistryBuilder.java:163) 
at org.hibernate.cfg.Configuration.configure(Configuration.java:259) 
at org.hibernate.cfg.Configuration.configure(Configuration.java:245) 
at org.hemant.hibernate.HibernateTest.main(HibernateTest.java:15) 
Caused by: javax.xml.bind.UnmarshalException 
    - with linked exception: 
[org.xml.sax.SAXParseException; lineNumber: 13; columnNumber: 63; cvc-elt.1: Cannot find the declaration of element 'hibernate-configuration'.] 
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.handleStreamException(Unknown Source) 
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(Unknown Source) 
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(Unknown Source) 
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:126) 
... 6 more 
    Caused by: org.xml.sax.SAXParseException; lineNumber: 13; columnNumber: 63; cvc-elt.1: Cannot find the declaration of element 'hibernate-configuration'. 
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source) 
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(Unknown Source) 
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source) 
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source) 
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source) 
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(Unknown Source) 
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(Unknown Source) 
at com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorHandlerImpl.startElement(Unknown Source) 
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.ValidatingUnmarshaller.startElement(Unknown Source) 
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.InterningXmlVisitor.startElement(Unknown Source) 
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.StAXEventConnector.handleStartElement(Unknown Source) 
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.StAXEventConnector.bridge(Unknown Source) 
... 9 more     

Answer 1

istisna sebebi yanlış hibernate.cfg.xml dosyasıdır ...... hatalar var. , hatalı hibernate.cfg.xml bir kalıcı sınıfını belirtmek bu yapıyı

<!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> 
      ... 
      <mapping class="org.hibernate.hemant.dto.UDestails" /> 
     </session-factory> 
    </hibernate-configuration> 

kullanın. Bir class haritasına gerek böylece değil resource

<mapping class="org.hibernate.hemant.dto.UDestails" />

, unutmayın bir session ve sessionFactory bir kapatma ek açıklamalarla bir eşleme kullanın.