How do I return clean JSON from a WCF Service

Question

I am trying to return some JSON from a WCF service   This service simply returns some content from my database  I can get the data  However  I am concerned about the format of my JSON  Currently  the JSON that gets returned is formatted like this     d       Age   35   FirstName     Peyton     LastName     Manning       Age   31   FirstName     Drew     LastName     Brees       Age   29   FirstName     Tony     LastName     Romo          In reality  I would like my JSON to be formatted as cleanly as possible  I believe  I may be incorrect   that the same collection of results  represented in clean JSON  should look like so         Age   35     FirstName    Peyton      LastName    Manning          Age   31     FirstName    Drew      LastName    Brees          Age   29     FirstName    Tony      LastName    Romo       I have no idea where the    d    is coming from  I also have no clue why the escape characters are being inserted  My entity looks like the following    DataContract  public class Person        DataMember      public string FirstName   get  set          DataMember      public string LastName   get  set          DataMember      public int Age   get  set         public Person string firstName  string lastName  int age                this FirstName   firstName          this LastName   lastName          this Age   age            The service that is responsible for returning the content is defined as    ServiceContract Namespace         AspNetCompatibilityRequirements RequirementsMode   AspNetCompatibilityRequirementsMode Allowed   public class TestService        OperationContract       WebGet ResponseFormat   WebMessageFormat Json       public string GetResults                 List lt Person gt  results   new List lt Person gt             results Add new Person  Peyton    Manning   35            results Add new Person  Drew    Brees   31            results Add new Person  Tony    Romo   29                Serialize the results as JSON         DataContractJsonSerializer serializer   new DataContractJsonSerializer results GetType             MemoryStream memoryStream   new MemoryStream            serializer WriteObject memoryStream  results               Return the results serialized as JSON         string json   Encoding Default GetString memoryStream ToArray             return json            How do I return    clean    JSON from a WCF service  Thank you

User · Answer

I faced the same problem  and resolved it by changing the BodyStyle attribut value to  WebMessageBodyStyle Bare       OperationContract   WebGet BodyStyle   WebMessageBodyStyle Bare  RequestFormat   WebMessageFormat Json          ResponseFormat   WebMessageFormat Json  UriTemplate    GetProjectWithGeocodings  projectId     GeoCod Project GetProjectWithGeocodings string projectId     The returned object will no longer be wrapped

User · Answer

This is accomplished in web config for your webservice  Set the bindingBehavior to  lt webHttp gt  and you will see the clean JSON  The extra   d   is set by the default behavior which you need to overwrite   See in addition this blogpost  http   blog clauskonrad net 2010 11 how-to-expose-json-endpoint-from-wcf html

User · Answer

If you want nice json without hardcoding attributes into your service classes   use  lt webHttp defaultOutgoingResponseFormat  Json   gt  in your behavior config

User · Answer

When you are using GET Method the contract must be this    WebGet UriTemplate        BodyStyle   WebMessageBodyStyle Bare  ResponseFormat   WebMessageFormat Json   List lt User gt  Get      with this we have a json without the boot parameter  Aldo Flores  alduar http   alduar blogspot com

User · Answer

In your IServece cs add the following tag   BodyStyle   WebMessageBodyStyle Bare    WebInvoke Method    GET   ResponseFormat   WebMessageFormat Json  BodyStyle   WebMessageBodyStyle Bare  UriTemplate    Getperson  id          List lt personClass gt  Getperson string id

User · Answer

Change the return type of your GetResults to be List lt Person gt   Eliminate the code that you use to serialize the List to a json string - WCF does this for you automatically    Using your definition for the Person class  this code works for me    public List lt Person gt  GetPlayers         List lt Person gt  players   new List lt Person gt         players Add new  Person   FirstName  Peyton   LastName  Manning   Age 35          players Add new  Person   FirstName  Drew   LastName  Brees   Age 31          players Add new  Person   FirstName  Brett   LastName  Favre   Age 58           return players      results      Age  35  FirstName   Peyton   LastName   Manning         Age  31  FirstName   Drew   LastName   Brees         Age  58  FirstName   Brett   LastName   Favre       All on one line   I also used this attribute on the method     WebInvoke Method    GET              RequestFormat   WebMessageFormat Json             ResponseFormat   WebMessageFormat Json             UriTemplate    players      WebInvoke with Method   GET  is the same as WebGet  but since some of my methods are POST  I use all WebInvoke for consistency     The UriTemplate sets the URL at which the method is available   So I can do a GET on  http   myserver myvdir JsonService svc players and it just works    Also check out IIRF or another URL rewriter to get rid of the  svc in the URI

[wcf] How do I return clean JSON from a WCF Service?

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