出现加载struts-config.xml异常问题的原因之一

异常现象：

javax.servlet.UnavailableException: Parsing error processing resource path
        at org.apache.struts.action.ActionServlet.handleConfigException(ActionServlet.java:1035)
        at org.apache.struts.action.ActionServlet.parseModuleConfigFile(ActionServlet.java:1012)
        at org.apache.struts.action.ActionServlet.initModuleConfig(ActionServlet.java:955)
        at com.comtop.struts.action.ComtopActionServlet.initModuleConfig(ComtopActionServlet.java:61)
        at org.apache.struts.action.ActionServlet.init(ActionServlet.java:482)
        at javax.servlet.GenericServlet.init(GenericServlet.java:256)
        at weblogic.servlet.internal.StubSecurityHelper$ServletInitAction.run(StubSecurityHelper.java:276)
        at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
        at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
        at weblogic.servlet.internal.StubSecurityHelper.createServlet(StubSecurityHelper.java:68)
        at weblogic.servlet.internal.StubLifecycleHelper.createOneInstance(StubLifecycleHelper.java:58)
        at weblogic.servlet.internal.StubLifecycleHelper.(StubLifecycleHelper.java:48)
        at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.java:504)
        at weblogic.servlet.internal.WebAppServletContext.preloadServlet(WebAppServletContext.java:1698)
        at weblogic.servlet.internal.WebAppServletContext.loadServletsOnStartup(WebAppServletContext.java:1675)
        at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1595)
        at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:2734)
        at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:892)
        at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:336)
        at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:204)
        at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)

 

原因：

struts-project-config.xml文件的文件头有问题（版本不正确）

如：
//DTD Struts Configuration 1.1//EN" "">

//DTD Struts Configuration 1.1//EN" "">