liferay + ext插件时外部集成webservice异常

异常：

AxisFault

faultCode:{http://schemas.xmlsoap.org/soap/envelope/}Server.userException

faultSubcode:

faultString:java.lang.ClassCastException:org.apache.axis.attachments.AttachmentsImplcannotbecasttoorg.apache.axis.attachments.Attachments

faultActor:

faultNode:

faultDetail:

{http://xml.apache.org/axis/}stackTrace:java.lang.ClassCastException:org.apache.axis.attachments.AttachmentsImplcannotbecasttoorg.apache.axis.attachments.Attachments

atorg.apache.axis.Message.setup(Message.java:352)

atorg.apache.axis.Message.<init>(Message.java:246)

atorg.apache.axis.client.Call.invoke(Call.java:2425)

atorg.apache.axis.client.Call.invoke(Call.java:2366)

atorg.apache.axis.client.Call.invoke(Call.java:1812)

atcom.lyasp.portlet.compositive.util.DynamicInvoker.invoke(DynamicInvoker.java:82)

atcom.lyasp.portlet.compositive.util.WebServiceUtil.getResultSetJson(WebServiceUtil.java:72)

atcom.lyasp.portlet.navigate.action.Navigate.serveResource(Navigate.java:129)

atcom.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:119)

atcom.liferay.portal.kernel.portlet.PortletFilterUtil.doFilter(PortletFilterUtil.java:71)

atcom.liferay.portlet.InvokerPortletImpl.invoke(InvokerPortletImpl.java:652)

atcom.liferay.portlet.InvokerPortletImpl.invokeResource(InvokerPortletImpl.java:747)

atcom.liferay.portlet.InvokerPortletImpl.serveResource(InvokerPortletImpl.java:504)

atcom.liferay.portal.action.LayoutAction.processPortletRequest(LayoutAction.java:871)

atcom.liferay.portal.action.LayoutAction.processLayout(LayoutAction.java:613)

atcom.liferay.portal.action.LayoutAction.execute(LayoutAction.java:232)

atorg.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)

atorg.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)

atcom.liferay.portal.struts.PortalRequestProcessor.process(PortalRequestProcessor.java:153)

atorg.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)

atorg.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)

atjavax.servlet.http.HttpServlet.service(HttpServlet.java:617)

atcom.liferay.portal.servlet.MainServlet.callParentService(MainServlet.java:508)

atcom.liferay.portal.servlet.MainServlet.service(MainServlet.java:485)

atjavax.servlet.http.HttpServlet.service(HttpServlet.java:717)

atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

atcom.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196)

atcom.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.jav:126)

atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

atcom.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196)

atcom.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:126)

atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

atcom.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196)

atcom.liferay.portal.servlet.filters.strip.StripFilter.processFilter(StripFilter.java:309)

atcom.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123)

atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

atcom.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196)

atcom.liferay.portal.servlet.filters.themepreview.ThemePreviewFilter.processFilter(ThemePreviewFilter.java:88)

atcom.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123)

atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

atcom.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196)

atcom.liferay.portal.servlet.filters.gzip.GZipFilter.processFilter(GZipFilter.java:121)

atcom.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123)

atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

atcom.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196)

atcom.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:182)

atcom.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123)

atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

atcom.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:196)

atcom.liferay.portal.servlet.filters.autologin.AutoLoginFilter.processFilter(AutoLoginFilter.java:254)

atcom.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:123)

atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

atorg.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)

atorg.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)

atorg.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)

atorg.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)

atcom.liferay.portal.servlet.FriendlyURLServlet.service(FriendlyURLServlet.java:134)