Using the Struts2-Rest-Plugin with Spring

Question

I'm starting to use the Struts2 Rest Plugin in our Spring application. Let's start with our struts.xml:

<struts>
    <constant name="struts.devMode" value="true" />
    <constant name="struts.custom.i18n.resources" value="lang/messages" />
    <constant name="struts.ognl.allowStaticMethodAccess" value="true" />
    <constant name="struts.mapper.class" value="rest" />

    <package name="default">
        <action name="document" class="DocumentRestaction" />
    </package>
</struts>

Then in Spring, I'm doing the following (to see if the String is injected):

<bean name="DocumentRestaction" class="be.example.actions.DocumentRestaction">
    <property name="injected" value="Oh Hai" />
</bean>

I do a POST request to the URL /documents and end up in the create() method, great! In debug, my injected variable is injected. But when I let the debug continue, I get following exception:

4129 [http-8080-2] ERROR org.apache.struts2.rest.RestActionInvocation - Exception processing the result.
java.lang.RuntimeException: Invalid action class configuration that references an unknown class named [DocumentRestaction]
    at org.apache.struts2.convention.ConventionsServiceImpl.determineResultPath(ConventionsServiceImpl.java:100)
    at org.apache.struts2.convention.ConventionUnknownHandler.determinePath(ConventionUnknownHandler.java:379)
    at org.apache.struts2.convention.ConventionUnknownHandler.handleUnknownResult(ConventionUnknownHandler.java:268)
    at com.opensymphony.xwork2.DefaultUnknownHandlerManager.handleUnknownResult(DefaultUnknownHandlerManager.java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.createResult(DefaultActionInvocation.java:227)
    at org.apache.struts2.rest.RestActionInvocation.executeResult(RestActionInvocation.java:221)
    at org.apache.struts2.rest.RestActionInvocation.processResult(RestActionInvocation.java:198)
    at org.apache.struts2.rest.RestActionInvocation.invoke(RestActionInvocation.java:146)
    at com.opensymphony.xwork2.DefaultActionProxy.execute(DefaultActionProxy.java:147)
    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:510)
    at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:291)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Thread.java:679)
Caused by: java.lang.ClassNotFoundException: DocumentRestaction
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
    at org.apache.struts2.util.ClassLoaderUtils.loadClass(ClassLoaderUtils.java:111)
    at org.apache.struts2.convention.ConventionsServiceImpl.determineResultPath(ConventionsServiceImpl.java:98)
    ... 27 more

But the class has been found .. (I ended up in create), why is it saying this? And most importantly, what am I doing wrong?

I'm using Spring v3.0.5, struts2-rest-plugin v2.3.1, struts2-core v2.3.1 and struts2-spring-plugin 2.3.1

Answer 1

In case anyone is looking for a solution to this, this article might help.

There's an omission in the sample code given though - in your applicationContext.xml, make sure you define the "id" and "class" to be the fully qualified class name of your controller:

   <bean id="com.mersoft.web.controller.TestController" class="com.mersoft.web.controller.TestController">
      <constructor-arg ref="testManager" />
   </bean>

Hope that helps. Oh, and to be clear, you don't have to remove the convention plugin as suggested in an earlier comment.