(错误问题解决)手动|自动装配Spring与Webwork配置修改spring-xwork-integration.jar方法实现

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Spring Webwork Java Apache Tomcat

我在网上看到一个spring 结合webwork的实例，自己弄了一下，发现老出现一个奇怪的错误

按照下面的配置，会出现一个一样的错误

严重: Could not execute action
java.lang.IllegalStateException: The application context has not been set on this resolver
at com.opensymphony.xwork.spring.SpringExternalReferenceResolver.resolveReferences(SpringExternalReferenceResolver.java:38)
at com.opensymphony.xwork.interceptor.ExternalReferencesInterceptor.before(ExternalReferencesInterceptor.java:40)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:34)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.DefaultActionProxy.execute(DefaultActionProxy.java:115)
at com.opensymphony.webwork.dispatcher.ServletDispatcher.serviceAction(ServletDispatcher.java:229)
at com.opensymphony.webwork.dispatcher.ServletDispatcher.service(ServletDispatcher.java:199)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.springframework.orm.hibernate.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:174)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:873)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Unknown Source)

我使用的是spring-xwork-integration.jar 这jar包来在webwork的action里面IOC注入spring的bean对象，异常提示的代码： The application context has not been set on this resolver 经分析就是在spring-xwork-integration.jar 的SpringExternalReferenceResolver里，其中一段代码如下

public void resolveReferences(ActionInvocation paramActionInvocation)
throws ReferenceResolverException
{
if(this.applicationContext == null) throw new IllegalStateException("The application context has not been set on this resolver");

--------------------

}

也就是说方法里的applicationContext 取不到，真奇怪，我在web.xml里配置了该jar包的listener

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

<listener>
<listener-class>com.opensymphony.xwork.spring.SpringObjectFactoryListener</listener-class>
</listener> -----------------这个就是spring-xwork-integration.jar里的listener

代码里主要片段：

public void contextInitialized(ServletContextEvent paramServletContextEvent)
{
    ServletContext localServletContext = paramServletContextEvent.getServletContext();
    WebApplicationContext localWebApplicationContext = WebApplicationContextUtils.getWebApplicationContext(localServletContext);
    SpringObjectFactory localSpringObjectFactory = new SpringObjectFactory();
    localSpringObjectFactory.setApplicationContext(localWebApplicationContext);
    ObjectFactory.setObjectFactory(localSpringObjectFactory);
}

里面是可以得到applicationContext 对象的，但是手工装配的SpringExternalReferenceResolver里没有给applicationContext 赋值，所以报错了，所以我更改了jar里的类，我首先用jd-gui.exe反编译jar，把这3个文件修改了

主要是在SpringObjectFactoryListener里新增一个静态实例变量

public static org.springframework.context.ApplicationContext.ApplicationContext aplicationContextWeb = null;

然后再contextInitialized方法体里赋值

aplicationContextWeb = localWebApplicationContext;

那么在SpringExternalReferenceResolver里，在使用applicationContext前赋值

applicationContext = SpringObjectFactoryListener.aplicationContextWeb;

编译好后，打jar包，覆盖原来的，重启tomcat，就通过了手工装配的测试。

但是如果在web.xml里把

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

<listener>
<listener-class>com.opensymphony.xwork.spring.SpringObjectFactoryListener</listener-class>
</listener> -----------------这个就是spring-xwork-integration.jar里的listener

2个位置对调，变成

<listener>
<listener-class>com.opensymphony.xwork.spring.SpringObjectFactoryListener</listener-class>
</listener> -----------------这个就是spring-xwork-integration.jar里的listener

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

系统又会出错，这个问题更复杂，具体原因我还不是是否清楚。有哪位精通的高手给我答案吗？？？？？？？？？？？

--------------这个问题我现在分析了spring-xwork-integration.jar里的java文件，发现原来jar里需要把ServletContextEvent 通过spring提供的WebApplicationContextUtils.getWebApplicationContext（）来转换

成spring自己的ApplicationContext，所以说，必须选侦听spring的ContextLoaderListener，在侦听SpringObjectFactoryListener，位置不能反，否则会报错。

谢谢啦！！！！！！！！！！！！！！！！！！

附近里的第一个jar文件是我修改过的！！！！！！！！！！！！！！（这后来发现是垃圾，可能被删除过文件的）

第二个jar包是比较完整的，是正确的

2010-5-26 18:19 我此时才发现，我在公司使用的spring-xwork-integration.jar 有重大问题，大小才8k不到，靠，郁闷啊，好像不对的，真正的spring-xwork-integration.jar应该比这个大，而且里面不止3个class，估计问题出在这里(当然也不排除jar的版本问题，但是我不知道怎么看版本，也许第二个jar包的版本比较新吧，只能猜测。)，上面的错误也跟这个jar包有关，新的jar换上去，问题就解决了，哈哈。垃圾啊，被人陷害了。怪不得网上找这问题，答案非常少啦，原来是这么回事。

spring-xwork-integration-2.jar 是我自己修改过的jar，按下面配置，可以自动装配的，不是原文说的手动，需要要手动，则使用

第二个 spring-xwork-integration.jar (10.1 KB)

------------------------------------------------下面是我看到的例子原文在http://gis8.blog.sohu.com/41790075.html ----------------------------------------------------------------------------

一个手动装配的Spring与Webwork集成配置示例

标签： webwork spring 集成配置手动装配

在web.xml中配置如下内容：
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

--------------这个侦听器好像是旧版本的，比较新的版本已经改为SpringExternalReferenceResolverSetupListener了，看不到这个SpringObjectFactoryListener了

xwork.xml文件，如下:
1 <!DOCTYPE xwork PUBLIC "-//OpenSymphony Group//XWork 1.0//EN"
2 "http://www.opensymphony.com/xwork/xwork-1.0.dtd">
3 <xwork>
4 <include file="webwork-default.xml"/>
5 
6 <package name="myDefault" extends="webwork-default"
7  externalReferenceResolver="com.opensymphony.xwork.spring.SpringExternalReferenceResolver">
8  <interceptors> 
9     <interceptor name="myReferenceResolver" 
10           class="com.opensymphony.xwork.interceptor.ExternalReferencesInterceptor"/>
11    <interceptor-stack name="myDefaultStack">
12      <interceptor-ref name="defaultStack"/>
13       <interceptor-ref name="params"/>
14       <interceptor-ref name="myReferenceResolver" />
15      </interceptor-stack>
16    </interceptors>
17   <default-interceptor-ref name="myDefaultStack"/> 
18 </package>
19 </xwork>

自定义的Action配置文件，样式如下：
<!DOCTYPE xwork PUBLIC "-//OpenSymphony Group//XWork 1.0//EN" "http://www.opensymphony.com/xwork/xwork-1.0.dtd"><xwork>
<package name="demo" extends="myDefault" >
  <action name="demo" class="com.demo.DemoAction">
   <external-ref name="demoLogic">myLogic</external-ref>
   <result name="success">test.jsp</result>
  </action>
</package>
</xwork>