CODEWITHSUNDEEP
c#.netwcfjsonexception
mimo
mimo

Reputation: 937

Error Handling in WCF WebHttp Services with WebFaultException only xml formated exception

Im trying to get WebFaultException to be returns as json and xml depending on what the client asks for as described in

http://blogs.msdn.com/b/endpoint/archive/2010/01/21/error-handling-in-wcf-webhttp-services-with-webfaultexception.aspx

My service interface looks like this

    [OperationContract]
    [WebInvoke(Method = "POST", UriTemplate = "session_record?id={id}&command={command}")]
    void SessionRecord(Guid id, String command);

The exception

throw new WebFaultException<string>("Session not started", HttpStatusCode.Conflict);

Web.config service setup

<system.serviceModel>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
<behaviors>
  <serviceBehaviors>
    <behavior>
      <serviceMetadata httpGetEnabled="true" />
      <serviceDebug includeExceptionDetailInFaults="true" />
    </behavior>
  </serviceBehaviors>
</behaviors>
<standardEndpoints>
  <webHttpEndpoint>
    <standardEndpoint name="" helpEnabled="true" faultExceptionEnabled="true" automaticFormatSelectionEnabled="true"  />
  </webHttpEndpoint>
</standardEndpoints>

My client call to the service

$.ajax({
            url: "Webservice/session_record?id={id}&command={command}".format({ id: $("#sessionGuid").val(), command : "start" }),
            type: "POST",
            dataType: "json",
            contentType: "application/json; charset=utf-8",
            success: function (data) {
                alert("Started");
            }
        });

I would except to receive json from the server, but i get xml

And as i read it in the link i have posted i should be possible

With the WebFaultException, the detail of the exception that is serialized in the body of >the response message will always be in the format (XML or JSON) that the client would have >received had there not been an error. If the client was expecting XML, the client will >get the exception detail serialized as XML. Likewise, if the client was expecting JSON, >the client will get the exception detail serialized as JSON.

Upvotes: 3

Views: 4662

Answers (2)

user4994587
user4994587

Reputation:

minor changes in Web.config service setup should work too: automaticFormatSelectionEnabled="false" defaultOutgoingResponseFormat="json"

<system.serviceModel>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
<behaviors>
  <serviceBehaviors>
    <behavior>
      <serviceMetadata httpGetEnabled="true" />
      <serviceDebug includeExceptionDetailInFaults="true" />
    </behavior>
  </serviceBehaviors>
</behaviors>
<standardEndpoints>
  <webHttpEndpoint>
    <standardEndpoint name="" helpEnabled="true" faultExceptionEnabled="true" automaticFormatSelectionEnabled="false" defaultOutgoingResponseFormat="Json" />
  </webHttpEndpoint>
</standardEndpoints>

Upvotes: 1

mimo
mimo

Reputation: 937

I found the solution; faultExceptionEnabled needed to be false. Now I get the exception in json.

Upvotes: 4

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