今天遇到一个问题，系统基于WCF框架，不同的服务完全相似的代码，一个就报错，一个成功。而且报错的代码其实际顺利运行完毕所有代码，事务也成功地提交了，只是在返回信息时WCF给了一个错误信息：
<Fault xmlns=""><Code><Value>Receiver</Value><Subcode><Value xmlns:a="">a:InternalServiceFault</Value></Subcode></Code><Reason><Text xml:lang="zh-CN">message 对象已被释放。</Text></Reason><Detail><ExceptionDetail xmlns="" xmlns:i=""><HelpLink i:nil="true"/><InnerException i:nil="true"/><Message>message 对象已被释放。</Message><StackTrace> 在 System.ServiceModel.Channels.ByteStreamMessage.InternalByteStreamMessage.get_Properties() 在 System.ServiceModel.OperationContext.get_IncomingMessageProperties() 在 System.ServiceModel.Web.IncomingWebRequestContext.get_UriTemplateMatch() 在 System.ServiceModel.Description.WebHttpBehavior.TrySetupJavascriptCallback(String callbackParameterName) 在 System.ServiceModel.Dispatcher.JavascriptCallbackMessageInspector.BeforeSendReply(Message& reply, Object correlationState) 在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.BeforeSendReplyCore(MessageRpc& rpc, Exception& exception, Boolean& thereIsAnUnhandledException)</StackTrace><Type>System.ObjectDisposedException</Type></ExceptionDetail></Detail></Fault>经过排查，发现是由于Web.Config文件中binging节点的crossDomainScriptAccessEnabled="true" 属性导致的，去掉后一切正常。微软官方帮助文档说该属性是用来设定是否允许跨域脚本访问，，不清楚为何该属性会导致上述问题。只不过我们项目暂时不存在跨域访问问题，故去掉没有大碍。
具体web.config配置文件和代码如下：
<?xml version="1.0" encoding="utf-8"?><configuration> <system.serviceModel><services><service behaviorConfiguration="Service.ServiceBehavior" name="VME.Service.PictureService"><endpoint address="" behaviorConfiguration="VME.Service.ServiceAspNetAjaxBehavior"binding="webHttpBinding" contract="VME.Contract.IPictureService" bindingConfiguration="webBinding" /></service><service behaviorConfiguration="Service.ServiceBehavior" name="VME.Service.ServiceService"><endpoint address="" behaviorConfiguration="VME.Service.ServiceAspNetAjaxBehavior"binding="webHttpBinding" contract="VME.Contract.IServiceService" bindingConfiguration="serviceBinding" /></service></services><behaviors><endpointBehaviors><behavior name="VME.Service.ServiceAspNetAjaxBehavior"><enableWebScript /></behavior></endpointBehaviors><serviceBehaviors><behavior name="Service.ServiceBehavior"><serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="50" maxConcurrentInstances="50"/><serviceMetadata httpGetEnabled="true" httpsGetEnabled="true"/><serviceDebug includeExceptionDetailInFaults="true" /><dataContractSerializer maxItemsInObjectGraph="2147483647"/></behavior></serviceBehaviors></behaviors><protocolMapping><add binding="webHttpBinding" scheme="http" /></protocolMapping><bindings><webHttpBinding><binding name="webBinding" useDefaultWebProxy="false" crossDomainScriptAccessEnabled="true"maxReceivedMessageSize="2147483647" maxBufferSize="2147483647" maxBufferPoolSize="2147483647"sendTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:01:00" closeTimeout="00:01:00"transferMode="Streamed" hostNameComparisonMode="StrongWildcard"><readerQuotas maxArrayLength="2147483647" maxStringContentLength="2147483647" maxDepth="32" maxBytesPerRead="4096" maxNameTableCharCount="16384"/><security mode="None"></security></binding><binding name="serviceBinding" useDefaultWebProxy="false" crossDomainScriptAccessEnabled="true"maxReceivedMessageSize="2147483647" maxBufferSize="2147483647" maxBufferPoolSize="2147483647"sendTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:01:00" closeTimeout="00:01:00"transferMode="Streamed" hostNameComparisonMode="StrongWildcard"><readerQuotas maxArrayLength="2147483647" maxStringContentLength="2147483647" maxDepth="32" maxBytesPerRead="4096" maxNameTableCharCount="16384"/><security mode="None"></security></binding></webHttpBinding></bindings><serviceHostingEnvironment aspNetCompatibilityEnabled="true"multipleSiteBindingsEnabled="true" /> </system.serviceModel></configuration>[ServiceContract]public interface IPictureService{[OperationContract][WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.WrappedRequest)]bool SendIdCardPicture(Stream idCardImg);}[ServiceContract]public interface IServiceService{[OperationContract][WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.WrappedRequest)]bool AddService(Stream service);}上面IPictureService接口的程序是能正常返回信息，而IServiceService接口的程序就报错。
有高手请给予指点迷津，到底哪里出了问题。
接受失败，是我们不常听到或看到的一个命题，我们大都接受的是正面的教育，
