Question

我有点疑惑为什么我的尝试...捕获异常似乎无法正常工作。我设置了以下代码，它可以正常工作 - 调用WCF的restful服务。我决定通过关闭WCF restful服务来测试它，希望它会捕获错误消息或忽略200（ok）消息等但由于某种原因.. try catch和response.EnsureStatusIsSuccessful（）似乎被忽略因此生成try catch中间的HttpStageProcessingException错误..

据我所知，当忽略200时，我只需要捕获ArgumentOutOfRangeException ...想法？

        // set up passing parameters
        var p = new HttpQueryString();
        p.Add("username", username);
        p.Add("password", password);

        try
        {
            WebConfigurations cfg = new WebConfigurations();
            HttpResponseMessage response;

            // cfg - gets the base address for the URL of the WCF
            using (HttpClient client = new HttpClient(cfg.GetBaseUrl()))
            {
                // exception HttpStageProcessingException occurs here...
                response = client.Get(new Uri(client.BaseAddress + "MainService/ValidateUser"), p);
                response.EnsureStatusIsSuccessful();

                string memberallowed = string.Empty;

                // process the resonse xml etc..NOT a problem...
                ProcessStreamData proc = new ProcessStreamData();
                memberallowed = proc.ReadStreamData(response);

                // blah balh
                return result;
            }

        }

        catch (ArgumentOutOfRangeException aorEx)
        {

            Console.Write("Argument Out of Range: " + aorEx.Message);
            return false;

        }
        // This really should not be here??? No error message is generated, too...
        catch (HttpStageProcessingException timeEx)
        {
            Console.Write("Stage Processing" + timeEx.Message);
            return false;

        }
        catch (Exception ex)
        {
            Console.Write("Standard error" + ex.Message);
            return false;
        }

Answer 1

在告诉Visual Studio不要破坏抛出的异常之后，您是否尝试过这样做？从菜单，调试 - ＆gt;例外，然后取消选中。

此外，您可能希望从Rest Starter Kit转储该版本的HttpClient。最新版本可以在http://nuget.org/List/Packages/HttpClient找到，并警告有重大变化。

MVC RESTFUL HTTPClient尝试抓住奇怪的东西

1 个答案: