Struts应用程序在共享tomcat上提供JasperException

时间:2015-08-07 17:39:17

标签: java tomcat struts2

Struts问题报告

Struts检测到未处理的异常:

讯息:
1. org.apache.jasper.el.E​​LContextImpl无法强制转换为org.apache.jasper.el.E​​LContextImpl

  1. java.lang.ClassCastException:org.apache.jasper.el.E​​LContextImpl无法强制转换为org.apache.jasper.el.E​​LContextImpl
  2. 文件: org / apache / jasper / runtime / PageContextImpl.java

    行号: 1,023

    org.apache.jasper.JasperException: java.lang.ClassCastException: org.apache.jasper.el.ELContextImpl cannot be cast to org.apache.jasper.el.ELContextImpl
        org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:549)
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470)
        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
        org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:96)
        org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
        org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487)
        org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412)
        org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339)
        org.apache.struts2.dispatcher.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:164)
        org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:188)
        com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:369)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:273)
        org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:167)
        com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
        org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76)
        com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
        com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
        com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
        com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:139)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
        org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:564)
        org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)
        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
        org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
        org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
        org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
        org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
        org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
        org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
        org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
        org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
        org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
        org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
        org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
        org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
        org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
        org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
        org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200)
        org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
        org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
        java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        java.lang.Thread.run(Thread.java:745)
    
    java.lang.ClassCastException: org.apache.jasper.el.ELContextImpl cannot be cast to org.apache.jasper.el.ELContextImpl
        org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:1023)
        org.apache.jsp.front.article_jsp._jspx_meth_c_005fwhen_005f0(article_jsp.java:258)
        org.apache.jsp.front.article_jsp._jspx_meth_c_005fchoose_005f0(article_jsp.java:227)
        org.apache.jsp.front.article_jsp._jspService(article_jsp.java:118)
        org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
        org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:96)
        org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
        org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487)
        org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412)
        org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339)
        org.apache.struts2.dispatcher.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:164)
        org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:188)
        com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:369)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:273)
        org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:167)
        com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
        org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76)
        com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
        com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
        com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
        com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:139)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)
        com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
        org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
        org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:564)
        org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)
        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
        org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
        org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
        org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
        org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
        org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
        org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
        org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
        org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
        org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
        org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
        org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
        org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
        org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
        org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
        org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200)
        org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
        org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
        java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        java.lang.Thread.run(Thread.java:745)
    

    我有很多事要解决它。替换一些罐子和其他东西,但无法修复。

    实际上我有一个共享的java主机,我正面临这个问题。我无法看到tomcat日志,我从struts调试模式得到这个。托管有一个共享的tomcat7,它运行多个站点,包括我的。

    article.jsp

        <%@include file="header-includes.jsp"%>
    <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
        pageEncoding="ISO-8859-1"%>
    <%@taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
    <jsp:include page="head.jsp"></jsp:include>
    <jsp:include page="google_analytics.jsp"></jsp:include>
    <c:choose>
        <c:when test="${article!=null}">
            <title>Orajpoint.com:&nbsp;<c:out value="${article.title}"></c:out></title>
        </c:when>
        <c:otherwise>
            <title>Orajpoint.com, Learn it in easy way!</title>
        </c:otherwise>
    </c:choose>
    </head>
    <body>
    <%-- fb APIs --%>
    <div id="fb-root"></div>
    <script>
        (function(d, s, id) {
            var js, fjs = d.getElementsByTagName(s)[0];
            if (d.getElementById(id))
                return;
            js = d.createElement(s);
            js.id = id;
            js.src = "https://connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.3&appId=1415162805470476";
            fjs.parentNode.insertBefore(js, fjs);
        }(document, 'script', 'facebook-jssdk'));
    </script>
    <%--Main menu --%>
        <jsp:include page="main-menu.jsp"></jsp:include>
        <div class="container" style="min-height: 90%">
            <%-- Site Header --%>
            <jsp:include page="site-header.jsp"></jsp:include>
            <div class="row">
                <div class="col-lg-12">
                    <s:actionerror />
                    <s:actionmessage />
                </div>
            </div>
            <div class="row">
                <c:choose>
                    <c:when test="${fn:length(categories) gt 0}">
                        <div class="col-lg-8">
                            <jsp:include page="article-content.jsp"></jsp:include>
                        </div>
                        <div class="col-lg-4" style="margin: 10px auto;">
                            <jsp:include page="sub-menu.jsp"></jsp:include>
                        </div>
                    </c:when>
                    <c:otherwise>
                        <div class="col-lg-12">
                            <jsp:include page="article-content.jsp"></jsp:include>
                        </div>
                    </c:otherwise>
                </c:choose>
    
            </div>
        </div>
        <%--Footer --%>
        <jsp:include page="footer.jsp"></jsp:include>
    </body>
    </html>
    

    此前工作正常,但有时突然停止。我试图在服务器上反复重新部署此应用程序。

    我有共享主机,因此无法访问catalina日志。

0 个答案:

没有答案