WCF JSON returns XML data!

Question

I'm building a WCF REST Web service which should output JSON, but I'm getting XML.

I'm using ResponseFormat = WebMessageFormat.Json

Please help I search everywhere and I couldn't find the solution.

Note: I even tried the suggestion from here

config file

<services> 
  <service name="TestService"> 
     <endpoint address="" 
               behaviorConfiguration="TestServiceAspNetAjaxBehavior" 
               binding="webHttpBinding" 
               bindingConfiguration="webBinding" 
               contract="TestService" /> 
   </service> 
 </services> 
 <bindings> 
     <webHttpBinding> 
         <binding name="webBinding"> 
              <security mode="Transport"> 
              </security> 
          </binding> 
      </webHttpBinding> 
 </bindings>

I did try <webHttp defaultOutgoingResponseFormat="Json"/> in the web.config file and didn't work! — Hardcode
– Hardcode, Commented Jul 12, 2011 at 15:10
Can I confirm that you are using WebServiceHost or WebHttpBinding? — Richard Blewett
– Richard Blewett, Commented Jul 12, 2011 at 15:11
I'm using WebHttpBinding. <services> <service name="TestService"> <endpoint address="" behaviorConfiguration="TestServiceAspNetAjaxBehavior" binding="webHttpBinding" bindingConfiguration="webBinding" contract="TestService" /> </service> </services> <bindings> <webHttpBinding> <binding name="webBinding"> <security mode="Transport"> </security> </binding> </webHttpBinding> </bindings> — Hardcode
– Hardcode, Commented Jul 12, 2011 at 15:14
Can you add the endpointBehavior block to the config above too — Richard Blewett
– Richard Blewett, Commented Jul 12, 2011 at 17:25
Well I have it on <system.serviceModel> <behaviors> <endpointBehaviors> <behavior name="TimeServiceAspNetAjaxBehavior"> <webHttp defaultOutgoingResponseFormat="Json"/> <enableWebScript /> </behavior> </endpointBehaviors> </behaviors> — Hardcode
– Hardcode, Commented Jul 12, 2011 at 19:24

carlosfigueira · Accepted Answer · 2011-07-12 16:06:43Z

1

Some things you need to check:

The "name" attribute of your <service> element in web.config needs to match the fully-qualified name of the service class - if TestService is on namespace MyNamespace, then the service must be declared as <service name="MyNamespace.TestService"> - in other words, it must match the name you have in the '.svc' file for your service
Your endpoint declaration doesn't specify a behaviorConfiguration attribute; for WCF web endpoints, you need both to have the webHttpBinding and the a reference to a behavior which declares (in your case) <webHttp />
Another option is to use the WebServiceHostFactory in the .svc file: <% @ServiceHost Service="MyNamespace.TestService" Factory="System.ServiceModel.Activation.WebServiceHostFactory" Language="C#" debug="true" %>. With this you don't need to have the service defined in config.

answered Jul 12, 2011 at 16:06

carlosfigueira

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1 Comment

Hardcode Over a year ago

I'm not using .svc file. I using the WCF Rest template which don't need a .svc file. Beside that I did change the service name in the web.config and didn't solve the issue.

Teoman shipahi · Accepted Answer · 2012-08-23 21:35:43Z

0

I had a similar issue because I had a tag like this;

<behavior name="jsonBehavior">
          <enableWebScript/>
          <webHttp helpEnabled="true"/>
        </behavior>

after I remove

<webHttp helpEnabled="true"/>

it is fixed. Maybe it is a bug. I am not sure.

answered Aug 23, 2012 at 21:35

Teoman shipahi

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