Could not find datasource

slf4j-nop.jar;

slf4j-simple.jar;

slf4j-log4j12.jar;

slf4j-jdk14.jar;

logback-classic.jar.

No Eclipse:

Clique com o botão direito sobre o seu projeto;

Agora localize a opção Build Path e em seguida clique em Configure Build Path;

Na nova janela que se abrirá, localize a aba Libraries e no lado direito clique no botão Add Jars;

Em seguida basta navegar pelo seu projeto até WEB-INF/lib e selecionar o jar.

No NETBeans:

Clique com o botão direito sobre seu projeto;

Em seguida seleciona Propriedades;

Na janela que se abrirá, clique em Bibliotecas no lado esquerdo;

Agora clique em Adicionar JAR/Pasta e navegue pelo seu projeto até WEB-INF/lib e selecionar o jar.

antlr-2.7.6.jar;

common-annotations.jar;

commons-beanutils.jar;

commons-collections-3.1.jar;

commons-digester.jar;

commons-logging.jar;

dom4j-1.6.1.jar;

ejb3-persistence.jar;

hibernate3.jar;

javassist-3.9.0.GA.jar;

jsf-api-2.0.4-b09.jar;

jsf-impl-2.0.4-b09.jar;

jstl-api-1.2.jar;

jstl-impl-1.2.jar;

jstl.jar;

mysql-connector-java-5.1.8-bin.jar;

postgresql-9.0-801.jdbc4.jar;

primefaces-3.3.1.jar;

slf4j-api-1.6.1.jar

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">

  <persistence-unit name="wirelane" transaction-type="resource_local">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
         
    <properties>
      <property name="hibernate.connection.username" value="postgres"/>
      <property name="hibernate.connection.password" value="xavier"/>
      <property name="hibernate.connection.driver_class" value="org.postgresql.Driver"/>
      <property name="hibernate.connection.url" value="jdbc:postgresql://localhost:5432/postgres"/>
      <property name="hibernate.cache.provider_class" value="org.hibernate.cache.NoCacheProvider"/>
   			<property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect"/>
    </properties>
  </persistence-unit>
</persistence>


	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
	    String path = System.getProperty("java.class.path");
	    
	    System.out.println(path);
  	    EntityManagerFactory factory= Persistence.createEntityManagerFactory("wirelane");
   	    EntityManager manager= factory.createEntityManager();
   	    
       	StringBuffer sbQuery1 = new StringBuffer();
       	sbQuery1.append(" FROM Produto");			
		Query sbQueryaux = manager.createQuery(sbQuery1.toString());	

   	    System.out.println("evandro");
   	    
   	    

/*		  URLClassLoader classLoader = (URLClassLoader)main.class.getClassLoader();
          System.out.println(Arrays.toString(classLoader.getURLs()));*/
	}

Exception in thread “main” java.lang.NoClassDefFoundError: javax/persistence/spi/ProviderUtil

at java.lang.Class.getDeclaredConstructors0(Native Method)

at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)

at java.lang.Class.getConstructor0(Unknown Source)

at java.lang.Class.newInstance0(Unknown Source)

at java.lang.Class.newInstance(Unknown Source)

at javax.persistence.Persistence.findAllProviders(Persistence.java:80)

at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:49)

at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:34)

at br.com.warelane.entidades.main.main(main.java:22)

Caused by: java.lang.ClassNotFoundException: javax.persistence.spi.ProviderUtil

at java.net.URLClassLoader$1.run(Unknown Source)

at java.net.URLClassLoader$1.run(Unknown Source)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

… 9 more