Question

我正在制作一个Silverlight应用程序，它使用部署在云上的wcf数据服务。 WCF数据服务在浏览器上完美运行，但是当我使用它作为dataservice查询来填充控件并使用loadasync方法时，我得到以下错误。

我包含了clientaccesspolicy.xml和crossdomain.xml，可以访问并向所有域开放。

我使用了fiddler，但它甚至没有尝试检索clientaccesspolicy.xml文件，而是在此之前获取错误。

至少有人知道如何找到错误吗？

e.Error {System.InvalidOperationException：处理此请求时发生错误。 ---＆GT; System.Security.SecurityException ---＆gt; System.Security.SecurityException：安全性错误。在System.Net.Browser.ClientHttpWebRequest.InternalEndGetResponse（IAsyncResult asyncResult）在System.Net.Browser.ClientHttpWebRequest。＆lt;＆gt; c_ DisplayClass5.b _4（Object sendState）在System.Net.Browser.AsyncHelper。＆lt;＆gt; c_ DisplayClass4.b _1（Object sendState） ---内部异常堆栈跟踪结束--- 在System.Net.Browser.AsyncHelper.BeginOnUI（SendOrPostCallback beginMethod，Object state）在System.Net.Browser.ClientHttpWebRequest.EndGetResponse（IAsyncResult asyncResult）在System.Data.Services.Http.ClientHttpWebRequest.EndGetResponse（IAsyncResult asyncResult）在System.Data.Services.Client.QueryResult.AsyncEndGetResponse（IAsyncResult asyncResult） ---内部异常堆栈跟踪结束--- at System.Data.Services.Client.BaseAsyncResult.EndExecute [T]（Object source，String method，IAsyncResult asyncResult）在System.Data.Services.Client.QueryResult.EndExecute [TElement]（对象源，IAsyncResult asyncResult）在System.Data.Services.Client.DataServiceRequest.EndExecute [TElement]（对象源，DataServiceContext上下文，IAsyncResult asyncResult）在System.Data.Services.Client.DataServiceQuery 1.EndExecute(IAsyncResult asyncResult) at System.Data.Services.Client.DataServiceCollection 1.＆lt;＆gt; c_ DisplayClass2.b _1（IAsyncResult asyncResult）在System.Data.Services.Client.DataServiceCollection 1.<>c__DisplayClassd.<>c__DisplayClassf.<BeginLoadAsyncOperation>b__b()} [System.InvalidOperationException]: {System.InvalidOperationException: An error occurred while processing this request. ---> System.Security.SecurityException ---> System.Security.SecurityException: Security error. at System.Net.Browser.ClientHttpWebRequest.InternalEndGetResponse(IAsyncResult asyncResult) at System.Net.Browser.ClientHttpWebRequest.<>c__DisplayClass5.<EndGetResponse>b__4(Object sendState) at System.Net.Browser.AsyncHelper.<>c__DisplayClass4.<BeginOnUI>b__1(Object sendState) --- End of inner exception stack trace --- at System.Net.Browser.AsyncHelper.BeginOnUI(SendOrPostCallback beginMethod, Object state) at System.Net.Browser.ClientHttpWebRequest.EndGetResponse(IAsyncResult asyncResult) at System.Data.Services.Http.ClientHttpWebRequest.EndGetResponse(IAsyncResult asyncResult) at System.Data.Services.Client.QueryResult.AsyncEndGetResponse(IAsyncResult asyncResult) --- End of inner exception stack trace --- at System.Data.Services.Client.BaseAsyncResult.EndExecute[T](Object source, String method, IAsyncResult asyncResult) at System.Data.Services.Client.QueryResult.EndExecute[TElement](Object source, IAsyncResult asyncResult) at System.Data.Services.Client.DataServiceRequest.EndExecute[TElement](Object source, DataServiceContext context, IAsyncResult asyncResult) at System.Data.Services.Client.DataServiceQuery 1.EndExecute（IAsyncResult asyncResult）在System.Data.Services.Client.DataServiceCollection 1.<>c__DisplayClass2.<LoadAsync>b__1(IAsyncResult asyncResult) at System.Data.Services.Client.DataServiceCollection 1.＆lt;＆gt; c_ DisplayClassd。＆lt;＆gt; c _DisplayClassf.b_ b（）} 数据：{System.Collections.ListDictionaryInternal} InnerException：{System.Security.SecurityException ---＆gt; System.Security.SecurityException：安全性错误。在System.Net.Browser.ClientHttpWebRequest.InternalEndGetResponse（IAsyncResult asyncResult）在System.Net.Browser.ClientHttpWebRequest。＆lt;＆gt; c _DisplayClass5.b_ 4（Object sendState）在System.Net.Browser.AsyncHelper。＆lt;＆gt; c _DisplayClass4.b_ 1（Object sendState） ---内部异常堆栈跟踪结束--- 在System.Net.Browser.AsyncHelper.BeginOnUI（SendOrPostCallback beginMethod，Object state）在System.Net.Browser.ClientHttpWebRequest.EndGetResponse（IAsyncResult asyncResult）在System.Data.Services.Http.ClientHttpWebRequest.EndGetResponse（IAsyncResult asyncResult）在System.Data.Services.Client.QueryResult.AsyncEndGetResponse（IAsyncResult asyncResult）} 消息：“处理此请求时发生错误。” StackTrace：“在System.Data.Services.Client.BaseAsyncResult.EndExecute [T]（对象源，String方法，IAsyncResult asyncResult）\ r \ n在System.Data.Services.Client.QueryResult.EndExecute [TElement]（对象源），System.Data.Services.Client.DataServiceQuery {{1在System.Data.Services.Client.DataServiceCollection`1上的＆lt;＆gt; c _DisplayClass2.b_ 1（IAsyncResult asyncResult）\ r \ n。＆lt;＆gt; c _DisplayClassd＆LT;＆GT; C_ DisplayClassf.b _b（）“

Answer 1

我有同样的问题。我将clientaccesspolicy.xml更改为：

<?xml version="1.0" encoding="utf-8"?> 
<access-policy> 
  <cross-domain-access> 
    <policy> 
      <allow-from http-request-headers="*"> 
        <domain uri="*"/> 
      </allow-from> 
      <grant-to> 
        <resource path="/" include-subpaths="true"/> 
      </grant-to> 
    </policy> 
  </cross-domain-access> 
</access-policy>

清除浏览器缓存后，我的clientaccesspolicy已加载，并且工作正常。希望有所帮助

访问wcf数据服务时的Silverlight安全性异常

1 个答案: