Sharepoint How to do get request to external web service

Question

How can I make get request from Sharepoint object model to external web service? I tried did it with ajax request:

 $.get("http:/servername/webservice_name", function(data, status) {
alert("Data: " + data[0] + "\nStatus: " + status);

});

But I have an error: Access denied. My web service has response in JSON format. I have read a lot of article, but there are no decisions. I read, that ajax forbidden in SharePoint for external web service. How can I make it without ajax?

Answer 1

In the SharePoint online it is work only for https web services. http from https web sites not allowed. Final code, which work with https:

$(document).ready(function(){
$.ajax({
    url: "https://services.odata.org/Northwind/Northwind.svc/Customers",
    type: "GET",
    headers: { "ACCEPT": "application/json;odata=verbose" },
    async: false,
    success: function (data) {
        if(data.d.results.length>0){
            alert("Results Count:"+data.d.results.length);
        }else{
            alert("no data");
        }
    },
    error: function () {
        //alert("Failed to get details");                
    }
});

});