title: org/springframework/core/AliasRegistry not found
body: <p>I have developed demo application using spring struct and hibernate and getting following error while running it.</p>
  
  <pre><code>java.lang.NoClassDefFoundError: org/springframework/core/AliasRegistry
      at java.lang.ClassLoader.defineClass1(Native Method)
      at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
      at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
      at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2818)
      at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1159)
      at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1647)
      at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
      at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
      at java.lang.Class.getDeclaredConstructors0(Native Method)
      at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
      at java.lang.Class.getConstructor0(Class.java:2699)
      at java.lang.Class.getDeclaredConstructor(Class.java:1985)
      at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:78)
      at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:239)
      at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:190)
      at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
      at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4206)
  </code></pre>
  
  <p>through google i came to know that problem might be because of some version conflict of spring library
  So following is the jar list, i added in my application.</p>
  
  <pre><code>commons-digester-2.0.jar
  commons-beanutils-1.7.0.jar
  commons-chain-1.2.jar
  commons-collections-3.1.jar
  spring-core-2.5.jar
  javassist.jar
  spring-jdbc-2.5.jar
  spring-beans-2.5.6.jar
  spring-context-2.5.jar
  commons-logging-1.1.1.jar
  hibernate3.jar
  oro-2.0.8.jar
  struts2-core-2.3.1.2.jar
  hibernate-jpa-2.0-api-1.0.0.Final.jar
  mysql-connector-java-5.1.13-bin.jar
  antlr-2.7.2.jar
  struts-tiles-1.3.10.jar
  struts-taglib-1.3.10.jar
  struts-extras-1.3.10.jar
  com.springsource.org.dom4j-1.6.1.jar
  commons-validator-1.3.1.jar
  xwork-core-2.3.1.2.jar
  commons-io-2.0.1.jar
  hibernate-commons-annotations-3.2.0.Final.jar
  spring-context-support-2.5.jar
  spring-orm-2.5.jar
  spring-tx-2.5.6.jar
  spring-web-2.5.jar
  spring-webmvc-struts-2.5.jar
  </code></pre>