java - Error creating bean with name 'entityManagerFactory' -> Cannot parse persistence unit from class path resource [META-INF/persistence.xml] -

i have problem in j2e application , can't find solution. build successful there thrown runtime exception. tried many advices google nothing can solve problem.

severe: exception sending context initialized event listener instance of class org.springframework.web.context.contextloaderlistener org.springframework.beans.factory.beancreationexception: error creating bean name 'entitymanagerfactory' defined in servletcontext resource [/web-inf/datasource-config.xml]: invocation of init method failed; nested exception java.lang.illegalargumentexception: cannot parse persistence unit class path resource [meta-inf/persistence.xml] 

entitymanagerfactory in data-source

<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemalocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd                              http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">   <bean id="datasource" class="oracle.jdbc.pool.oracledatasource" >     <property name="connectioncachingenabled" value="true" />     <property name="url" value="jdbc:postgresql://localhost:5432/postgres" />     <property name="user" value="postgres" />     <property name="password" value="" /> </bean>   <bean id="entitymanagerfactory"     class="org.springframework.orm.jpa.localcontainerentitymanagerfactorybean">     <property name="jpavendoradapter">         <bean class="org.springframework.orm.jpa.vendor.hibernatejpavendoradapter">             <property name="showsql" value="true" />             <property name="generateddl" value="true" />             <property name="databaseplatform" value="org.hibernate.dialect.postgresqldialect" />         </bean>     </property>     <property name="datasource" ref="datasource" />     <property name="persistenceunitname" value="default" /> 

<bean id="transactionmanager" class="org.springframework.orm.jpa.jpatransactionmanager">     <property name="datasource" ref="datasource" />     <property name="entitymanagerfactory" ref="entitymanagerfactory" /> </bean>  <tx:annotation-driven transaction-manager="transactionmanager" />  <bean     class="org.springframework.orm.jpa.support.persistenceannotationbeanpostprocessor" /> 

persistence.xml

 <persistence-unit name="default" transaction-type="resource_local">              <class>com.example.j2eeapp.domain.userentity</class>      </persistence-unit> 

firstly, java compiler not validate existence of persistence.xml during compile time. error happen @ runtime.

stack trace you're getting pretty clear, program not locate persistence.xml on classpath.

the location of persistence.xml within jar has be: meta-inf/persistence.xml, or if it's war: web-inf/classes/meta-inf/persistence.xml