c# – 使用httpclient postAsJsonAsync从WCF服务发出错误请求

发布时间：2020-12-15 22:16:54 所属栏目：百科来源：网络整理

导读：以下是我的wcf服务. public ApiResponseWrapperTextBlobModel PostText(string sessionId,string profileId,TextBlobModel txtModel) {} 接口部分是这样的 [OperationContract] [WebInvoke(Method = "POST",ResponseFormat = WebMessageFormat.Json,BodyStyl

以下是我的wcf服务.

public ApiResponseWrapper<TextBlobModel> PostText(string sessionId,string profileId,TextBlobModel txtModel)
    {}

接口部分是这样的

[OperationContract]
    [WebInvoke(Method = "POST",ResponseFormat = WebMessageFormat.Json,BodyStyle = WebMessageBodyStyle.Bare,UriTemplate = "session/{sessionId}/profile/{profileId}/text")]
    ApiResponseWrapper<TextBlobModel> PostText(string sessionId,TextBlobModel txtModel);

而模型是

[DataContract]
public class TextBlobModel
{
    [DataMember]
    public string text { get; set; }

   [DataMember]
    public DateTime receivedTime { get; set; }
}

当我通过以下方式调用上述服务时,我总是得到错误请求错误.

var baseApiUrl = "http://localhost:51398/api.svc/";
           HttpClient authClient = new HttpClient();
           authClient.BaseAddress = new Uri(baSEOAuthApiUrl);
           apiClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

           var txtModel = new TextBlobModel();
           txtModel.text = "Hello How are you";
           txtModel.receivedTime = DateTime.Now;

            HttpResponseMessage txtResponse = apiClient.PostAsJsonAsync(String.Format("session/{0}/profile/{1}/text","sessionId","profileId"),txtModel).Result;
            var txtData = txtResponse.Content.ReadAsAsync<RootObject>().Result;

见下图.

你能告诉我这里做错了什么吗？

解决方法

试试这个,改变UriTemplate

"session/{sessionId}/profile/{profileId}/text"

至

"PostText/session/{sessionId}/profile/{profileId}/text".

试试这个’BodyStyle = WebMessageBodyStyle.WrappedRequest’,

并将此添加到配置文件以添加跟踪日志,之后您将收到实际错误.

<configuration> 
<system.diagnostics>
<trace autoflush="true">
</trace> 
<sources> 
<source name="System.ServiceModel" switchValue="Critical,Information,ActivityTracing" propagateActivity="true">
<listeners> 
<add name="sdt" type="System.Diagnostics.XmlWriterTraceListener" initializeData="C:logsmessages.svclog" />
</listeners>
</source> 
</sources> 
</system.diagnostics>
</configuration>

（编辑：李大同）

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