使用 POST(json 数据)调用 REST 服务方法时出现错误请求错误? [英] Bad Request Error On REST service Method call with POST (json Data)?

问题描述

我是 RESTful WCF 的新手，我正在尝试使用 POST 对 webservice 方法进行简单调用，这是我的代码

Hi i am new to the RESTful WCF I am trying to do the the simple call to the webservice method using POST here is my code

Service Interface code

 [ServiceContract]
public interface IJsonSave
{

    [OperationContract]
    [WebInvoke(UriTemplate = "/SaveJason", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json,
        Method = "POST", BodyStyle = WebMessageBodyStyle.WrappedRequest)]
    string SaveJason(string value);
}

web.config 文件代码

web.config file code

<?xml version="1.0"?>
<configuration>

  <system.web>
    <compilation debug="true" targetFramework="4.0" />
  </system.web>
  <system.serviceModel>
   <behaviors>
     <serviceBehaviors>
       <behavior name ="servicebehavior">
          <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
          <serviceMetadata httpGetEnabled="true"/>
          <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="true"/>
   </behavior>
  </serviceBehaviors>
  <endpointBehaviors>
    <behavior name="restbehavior">
      <webHttp/>
    </behavior>
  </endpointBehaviors>
</behaviors>
<services>
  <service name ="JsonDataSave.JsonSave"
           behaviorConfiguration ="servicebehavior" >
    <endpoint name ="SOAPEndPoint"
              contract ="JsonDataSave.IJsonSave"
              binding ="basicHttpBinding"
              address ="soap" />
    <endpoint name ="RESTEndPoint"
              contract ="JsonDataSave.IJsonSave"
              binding ="webHttpBinding"
              address ="Rest"
              behaviorConfiguration ="restbehavior" />
    <endpoint contract="IMetadataExchange"
              binding="mexHttpBinding"
              address="mex" />
  </service>
</services>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<system.webServer>
  <modules runAllManagedModulesForAllRequests="true"/>
 </system.webServer>

</configuration>

我尝试使用提琴手她是我的标题

I tried using fiddler her are my Headers

POST http://localhost:50267/JsonSave.svc/Rest/SaveJason
User-Agent: Fiddler
Content-Type: application/json
Data-Type: json
Host: localhost:50267

请求正文:

 ({"value":"asdfasd"})

它给出了 HTTP/1.1 400 Bad Request 的错误，当启用调试细节时，它给出了以下堆栈跟踪

It gives error of HTTP/1.1 400 Bad Request and when debug detail enabled it gives following stack trace

The server encountered an error processing the request. The exception message is 'Error    in deserializing body of request message for operation 'SaveJason'. The OperationFormatter could not deserialize any information from the Message because the Message is empty (IsEmpty = true).'. See server logs for more details. The exception stack trace is: 
at System.ServiceModel.Dispatcher.PrimitiveOperationFormatter.DeserializeRequest(Message message, Object[] parameters) at System.ServiceModel.Dispatcher.DemultiplexingDispatchMessageFormatter.DeserializeRequest(Message message, Object[] parameters) at System.ServiceModel.Dispatcher.UriTemplateDispatchFormatter.DeserializeRequest(Message message, Object[] parameters) at System.ServiceModel.Dispatcher.CompositeDispatchFormatter.DeserializeRequest(Message message, Object[] parameters) at System.ServiceModel.Dispatcher.DispatchOperationRuntime.DeserializeInputs(MessageRpc& rpc) at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& rpc) at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)

我在谷歌上搜索了很多并尝试了所有可用的解决方案，但它仍然不起作用，任何帮助都会很棒.它适用于 SOAP，只是在 REST 时出错！

I googled a lot and tried every solution there is available but it still didn't work any help would be great.And it works for the SOAP just gives error with REST!

推荐答案

为了收集有关数据流和错误位置的其他信息，您可能会受益于在服务端启用 WCF 跟踪.以下链接应提供足够的详细信息:http://msdn.microsoft.com/en-us/library/ms733025(v=vs.110).aspx

In order to gather additional information about the data flow and location of the error you may benefit from enabling WCF Tracing on the service side. The following link should provide sufficient details: http://msdn.microsoft.com/en-us/library/ms733025(v=vs.110).aspx

关于您的场景中的错误，我怀疑客户端和服务的消息编码设置不一致.我想知道可能是:

Regarding the error in your scenario, I suspect that the message encoding is not set consistently for the client and service. I wonder if maybe the:

BodyStyle = WebMessageBodyStyle.WrappedRequest

应该是:

BodyStyle = WebMessageBodyStyle.Wrapped

或

BodyStyle = WebMessageBodyStyle.Bare

因此请求和响应具有相同的包装样式.

so the request and response have the same wrapping style.

问候，

这篇关于使用 POST(json 数据)调用 REST 服务方法时出现错误请求错误?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！