spring - getting error Invalid NamespaceHandler class org.springframework.data.jpa.repository.config.JpaRepositoryNameSpaceHandler -

while running spring getting error that

unexpected exception parsing xml document class path resource  [spring/tx-annotation-app-context.xml]; nested exception  org.springframework.beans.fatalbeanexception: invalid namespacehandler class  [org.springframework.data.jpa.repository.config.jparepositorynamespacehandler]  namespace [http://www.springframework.org/schema/data/jpa]: problem  handler class file or dependent class; nested exception  java.lang.noclassdeffounderror:  org/springframework/data/repository/config/repositoryconfigurationextension 

here file

<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"  xmlns:context="http://www.springframework.org/schema/context" xmlns:jdbc="http://www.springframework.org/schema/jdbc"  xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jpa="http://www.springframework.org/schema/data/jpa" xsi:schemalocation="http://www.springframework.org/schema/jdbc                      http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd                     http://www.springframework.org/schema/beans                      http://www.springframework.org/schema/beans/spring-beans-3.1.xsd                     http://www.springframework.org/schema/tx                      http://www.springframework.org/schema/tx/spring-tx-3.1.xsd                     http://www.springframework.org/schema/data/jpa                      http://www.springframework.org/schema/data/jpa/spring-jpa-1.2.xsd                     http://www.springframework.org/schema/context                      http://www.springframework.org/schema/context/spring-context-3.1.xsd">  <description>example configuration started.</description>     .... </beans> 

here screen shot of included jars

what doing wrong namespace ?

thanks

i think problem using spring-data-commons-core version 1.1 , spring-data-jpa version 1.2. align versions of these libraries.

looking @ pom.xml file 1 of projects see.

<dependency>     <groupid>org.springframework.data</groupid>     <artifactid>spring-data-jpa</artifactid>     <version>1.2.0.release</version> </dependency> 

and uses spring-data-commons-core-1.4.0.release.jar

if switch packaging of spring-data-jpa pom, should download necessary dependencies, switch jar.