JSON响应AJAX中的格式错误

Question

I have the follow code, it's call a web service in other PC server. Data parameters are ok.

"{ ControlId: 'ZAsociated_26037', TaskId: 1495613, UserId: 166396,  TBodyId: ''}"

 $.ajax({
        type: "POST",
        cache: false,
        dataType: "json",        
        contentType: "application/json; charset=utf-8",
        data: "{ ControlId: '" + controlId + "', TaskId: " + taskid + ", UserId: " +
              userId + ",  TBodyId: '" + $(tbody).attr("id") + "'}",
        url: getWSPath() + "/GetZAsociatedResults", // CARGAR AQUI LA DIRECCION DEL WEBSERIVCE
        success: function (data) {         

            if (data != null && data.d != "[]") loadAsociatedTable(controlId, data.d);
           $("#loadingImg" + controlId).remove();
        },
        error: function (xhr, ajaxOptions, thrownError) {
           $("#loadingImg" + controlId).remove();
           alert("Error al obtener los datos: " +thrownError + "\nCodigo de error: " +xhr.status);          
        }
    });

The error is, that when i have the data.d result of WS, JSON add adicionals "\\" chars in string:

The begin of response: [{\\"Nombre del Documento\\":\\"Indemnizacion/Factura. 22076 - Proveedor - Sin: 38653 Global: No\\",\\"Estado\\":\\"Pago finalizado\\",

I try to replace "\\" to null string but it doesnt work

This AJAX when success call to loadAsociatedTable function and this do:

 for (var i = 0; i < $.parseJSON(data).length;i++){

and have an error in $.parseJSON(data).length because don't converter this string to object.

I checked in Chrome and the JSON is ok, without this bar "\\", and recognize that like a object, the problem is in IE v.11 only.

Answer 1

The server's JSON response is invalid. Some server programmer has misunderstood JSON double quote escaping and tried to apply it everywhere. Have the server return valid JSON. Most server environments have standard JSON libraries which will construct JSON which is not invalid. The correct JSON is of course just

[{"Nombre del Documento":"Indemnizacion/Factura. 22076 - Proveedor - Sin: 38653 Global: No","Estado":"Pago finalizado", ...

You can try to fix the JSON yourself, by replacing \\" with " , which would just be

replace(/\\"/g, '"')

but the problem is that you will also destroy \\" sequences representing double quote marks inside string values. That's quite a tricky problem to solve. So the best solution is to get the server to send down correct JSON to start with.

Answer 2

Can you Post the complete JSON which will help me to analyze In meanwhile try this

Using Eval on data.d like eval("{"+data.d+"}");

or JSON.Parse(data.d)

try validate you json here http://jsonlint.com/

Answer 3

Finally I could solve the problem, I used JSON.parse() instead $.parseJSON(), maybe is JQuery version. AJAX response contains this additionals "\\" but when I parse this object, JS convert it without problems. Thanks for your help!