Sending array of objects to WCF

问题:

In my application i want to save the data by using jQuery and Ajax.I have a WCF Service. I want to save a List of Objects by using ajax.I have tried with following code, but it is not working.

jquery code :

      var listOfObjects=new Array();

      //creating list of objects
      for(var i=0;i<5;i++)
       {   var MyEntity=new Object();
           MyEntity.TestId =i;
           MyEntity.TestId =i+"testName";
           listOfObjects.push(MyEntity);
       }

        //Saving info
        $.ajax({
            type: "POST",
            async: false,
            data: JSON.stringify(listOfObjects),
            url: "../ServiceLayer/myService.svc/SaveResults",
            contentType: "application/json; charset=utf-8",
            dataType: "json",          
            success: function () {
                alert("success");
            },
            error: function () {
                alert("Error");
            }
        });

WCF :

    [WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json,
     ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.WrappedRequest)]
    public void SaveLabResults(List<MyEntity> myEntity)
    {
          var lstEntities=myEntity;
    }

Entity:

[DataContract]
public class MyEntity
{
    [DataMember]
    public string TestId { get; set; }
    [DataMember]
    public string TestName { get; set; }
}

In this way i am trying to send the list data.But internal server error is coming.I am not getting where actually i am wrong.Is there any other way to send the list of objects to WCF ?

Thanks

回答1:

jquery code :

      var listOfObjects=new Array();

      //creating list of objects
      for(var i=0;i<5;i++)
       {   var MyEntity=new Object();
           MyEntity.TestId =i;
           MyEntity.TestId =i+"testName";
           listOfObjects.push(MyEntity);
       }

       var jsonList=JSON.stringify(listOfObjects);
       var dataToSend = '{"myEntity":'+jsonList+'';

        //Saving info
        $.ajax({
            type: "POST",
            async: false,
            data: dataToSend,
            url: "../ServiceLayer/myService.svc/SaveResults",
            contentType: "application/json; charset=utf-8",
            dataType: "json",          
            success: function () {
                alert("success");
            },
            error: function () {
                alert("Error");
            }
        });

WCF :

    [WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json,
     ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.WrappedRequest)]
    public void SaveLabResults(List<MyEntity> myEntity)
    {
          var lstEntities=myEntity;
    }

Entity:

[DataContract]
public class MyEntity
{
    [DataMember]
    public string TestId { get; set; }
    [DataMember]
    public string TestName { get; set; }
}

What i am missing was

 1.var jsonList=JSON.stringify(listOfObjects);
 2.var dataToSend = '{"myEntity":'+jsonData+''; 

The 2nd point myEntity key should be there in the final json object.And the key should be same as the wcf method object parameter.

Thanks

回答2:

Try BodyStyle = WebMessageBodyStyle.Bare for your server method or introduce a root element named "myEntity" in your JSON data prior to calling JSON.stringify in your client code.

回答3:

May be this one is the error:

//creating list of objects
  for(var i=0;i<5;i++)
   {   var MyEntity=new Object();
       MyEntity.TestId =i;
       MyEntity.TestId =i+"testName";
       listOfObjects.push(MyEntity);
   } //-------------------^--------------shouldn't it be capital M

and in the ajax function:

$.ajax({
        type: "POST",
        async: false,
        data: {data : JSON.stringify(listOfObjects)}, //<---not quite sure about it.