Error in struts2 startup: com/opensymphony/xwork2/spring/SpringObjectFactory. java: 220:-1

Tomcat startup error:

Class: com.opensymphony.xwork2.spring.SpringObjectFactory  File: SpringObjectFactory.java  Method: getClassInstance  Line: 220 - com/opensymphony/xwork2/spring/SpringObjectFactory.java:220:-1      at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:428)      at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69)      at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51)      at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)      at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)      at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)      at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)      at org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)      at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)      at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)      at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)      at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)      at org.apache.catalina.core.StandardService.start(StandardService.java:519)      at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)      at org.apache.catalina.startup.Catalina.start(Catalina.java:581)      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)      at java.lang.reflect.Method.invoke(Method.java:585)      at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)      at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)  Caused by: java.lang.NullPointerException      at com.opensymphony.xwork2.spring.SpringObjectFactory.getClassInstance(SpringObjectFactory.java:220)  

Solution

The listener related to spring ApplicationContext is not configured in web. xml.

<listener>      <listener-class>          org.springframework.web.context.ContextLoaderListener      </listener-class>  </listener>  

Principle:

View struts2-spring-plugin in struts2 plug-in strtus-plugin.xml

Xml Code  

<struts>      <bean type="com.opensymphony.xwork2.ObjectFactory" name="spring" class="org.apache.struts2.spring.StrutsSpringObjectFactory" />            <!--  Make the Spring object factory the automatic default -->      <constant name="struts.objectFactory" value="spring" />          <constant name="struts.class.reloading.watchList" value="" />      <constant name="struts.class.reloading.acceptClasses" value="" />      <constant name="struts.class.reloading.reloadConfig" value="false" />        <package name="spring-default">          <interceptors>              <interceptor name="autowiring" class="com.opensymphony.xwork2.spring.interceptor.ActionAutowiringInterceptor"/>              <interceptor name="sessionAutowiring" class="org.apache.struts2.spring.interceptor.SessionContextAutowiringInterceptor"/>          </interceptors>      </package>      </struts>  

 

 

Note the following: After the plug-in is introduced to the project, the ObjectFactory of Struts is automatically set to StrutsSpringObjectFactory, so that the Spring IOC container can host the Struts Action. This causes startup problems.

 

Xml Code  

1. <bean type="com.opensymphony.xwork2.ObjectFactory" name="spring" class="org.apache.struts2.spring.StrutsSpringObjectFactory" />  <!--  Make the Spring object factory the automatic default -->  <constant name="struts.objectFactory" value="spring" />   

    

Record the error for easy viewing.

 

Original address http://javeye.iteye.com/blog/940122