Can not find the declaration of element 'persistence'

Question

Have put the persistence.xml in the classpath of the project in eclipse because before the error was that the file was not found. Now gives this error:

Caused by: javax.persistence.PersistenceException: Invalid persistence.xml. Error parsing XML [line : -1, column : -1] : cvc-elt.1: Can not find the declaration of element 'persistence'

<persistence xmlns="http://java.sun.com/xml/ns/persistence"              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.1"              xsi:schemalocation="http://java.sun.com/xml/ns/persistence                                  http://java.sun.com/xml/ns/persistence/persistence_2_1.xsd">     <persistence-unit name="default" transaction-type="RESOURCE_LOCAL">         <provider>org.hibernate.ejb.HibernatePersistence</provider>         <properties>             <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect" />             <property name="javax.persistence.jdbc.url" value="jdbc:postgresql://localhost:5432/Automoveis" />             <property name="javax.persistence.jdbc.user" value="postgres" />             <property name="javax.persistence.jdbc.password" value="1234" />             <property name="javax.persistence.jdbc.driver" value="org.postgresql.jdbc.Driver" />             <property name="hibernate.show_sql" value="true" />             <property name="hibernate.format_sql" value="true" />             <property name="hibernate.hbm2ddl.auto" value="create" />         </properties>     </persistence-unit> </persistence> 

Answer 1

The problem is that you mix JPA 2.0 and JPA 2.1 notation.

Either this

<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"              xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence                                  http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"   version="2.1"> 

for JPA 2.1 or this

<persistence 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_2_0.xsd"   version="2.0"> 

for JPA 2 but not a mix thereof.

See http://www.oracle.com/webfolder/technetwork/jsc/xml/ns/persistence/index.html for details.