java.lang.NoSuchMethodError: org/springframework/beans/MutablePropertyValues.add(Ljava/lang/String;Ljava/lang/Object;) - spring

Question

While deploying application on weblogic 11g I get following error.
java.lang.NoSuchMethodError: org/springframework/beans/MutablePropertyValues.add(Ljava/lang/String;Ljava/lang/Object;)Lorg/springframework/beans/MutablePropertyValues;
I have following spring jars in my application
com.springsource.org.aopalliance-1.0.0.jar
com.springsource.org.aopalliance-sources-1.0.0.jar
org.springframework.beans-3.2.1.RELEASE.jar
org.springframework.context-3.2.1.RELEASE.jar
org.springframework.core-3.2.1.RELEASE.jar
org.springframework.expression-3.2.1.RELEASE.jar
org.springframework.jdbc-3.2.1.RELEASE.jar
org.springframework.transaction-3.2.1.RELEASE.jar
org.springframework.web.servlet-3.2.1.RELEASE.jar
org.springframework.web-3.2.1.RELEASE.jar
spring-aop-3.2.1.RELEASE.jar
And I have following other jars as well
commons-beanutils.jar,
commons-collections.jar,
commons-dbcp-1.4.jar,
commons-digester.jar,
commons-io-1.1.jar,
dom4j-1.3.jar,
jackson-core-asl-1.4.2.jar,
jackson-mapper-asl-1.4.2.jar,
jcommon-1.0.16.jar,
jfreechart-1.0.13.jar,
jstl-1.2.jar,
ojdbc6-11.2.0.3.jar,
slf4j.api-1.6.1.jar,
slf4j-nop-1.6.1.jar,
log4j-1.2.17.jar ,
Please help

Answer 1

You obviously have another version of this class in classpath. Do you have spring-beans in system classloader?
As Oracle documentation says, WebLogic web deployment descriptor weblogic.xml has a special element prefer-web-inf-classes.
By setting this element to true, you are changing classloader policy such that classes from application are loaded in preference to system classloader classes.