How to parse the output returned from REST (/_api/)?

Question

When we use REST we get output as xml how do we parse this via JSOM and fetch the values?

Also, please provide some information on how to use this in SSOM instead of JSOM?

Answer 1

The default format for SharePoint REST endpoint is application/atom+xml. Instead of manipulating results returned in Xml format you could specify JSON format.

Use accept header to specify the format for response data from the server. To get the results in JSON format, include an Accept header set to application/json;odata=verbose.

Examples

The code in the following example shows you how to request a JSON representation of all of the lists in a site by using

JavaScript:

$.ajax({
        url: siteUrl + "/_api/web/lists",
        method: "GET",
        headers: { "Accept": "application/json; odata=verbose" },
        success: function (data) {
           console.log(JSON.stringify(data.d.results));
        },
        error: function (data) {
           console.log(JSON.stringify(data));
        }
});

C#

var request = (HttpWebRequest)HttpWebRequest.Create(siteUrl + "/_api/web/lists");
request.Method = "GET";
request.Accept = "application/json;odata=verbose";
request.Headers.Add("Authorization", "Bearer " + accessToken);
var response = (HttpWebResponse)request.GetResponse();