Reading byte array response from rest using Javascript

Question

I have a rest url http://server1:8080/platform/collections/123-456-789 which returns an HTML file as a byte array.

How can I get the byte array response using Javascript or jQuery running in server2. I tried

jQuery.ajax({
        url: "http://server1:8080/platform/collections/123-456-789",
        type: "GET",
        dataType: "html",
        crossDomain: true,
        username: "abcd",
        password: "abcd",
        async: true,
        success: function(data) {
            alert("1");
            alert(data);
        },
        error: function (xhr, ajaxOptions, thrownError) {
            alert("error"+xhr.responseText);
            alert("error"+thrownError);
        }
});

I don't go into the success method. How can I get the byte array response successfully?

Edit:

Even anyother way to get byte array responce using javascript or jquery is also appreciated

@user1784484 The request might be timing out. Are you sure your server side logic is working? — user1726343
– user1726343, Commented Nov 28, 2012 at 9:56
For a cross domain request, I think you'll have to return JSONp. — slowe
– slowe, Commented Nov 28, 2012 at 9:58
You can also use Firebug (Network tab) or Chrome developer tools to have a more detailed information about the error... — Samuel Caillerie
– Samuel Caillerie, Commented Nov 28, 2012 at 10:06
i checked with chrome developer tools. I am getting the following in the console XMLHttpRequest cannot load "server1:8080/platform/collections/123-456-789". Origin "localhost:7070" is not allowed by Access-Control-Allow-Origin. — aaviss
– aaviss, Commented Nov 28, 2012 at 10:19

Bergi · Accepted Answer · 2012-11-28 12:58:23Z

1

For several servers (with different domains) you need to enable CORS to allow cross-domain ajax requests. It should be possible as both servers are under your control.

On how to receive binary data with jQuery (which is currently not possible), see http://blog.vjeux.com/2011/javascript/jquery-binary-ajax.html

answered Nov 28, 2012 at 12:58

Bergi

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2 Comments

aaviss Over a year ago

Yes Bergi you are right. Thanks for your response. I wrote a webservice in britesnow which reads the byte response and gives out json response.

sjngm Over a year ago

jQuery and binary is possible. You may want to look at my answer over here.

user165768 · Accepted Answer · 2013-08-05 00:23:15Z

CORS is the newer way to go, but jsonp may be a bit easier...

With JSONP, you will need to wrap your file on server1 in some sort of script so you can set the content-type header to javascript and then JSONencode the file and write it to the response. This could be done in a couple of lines in PHP or server side javascript; you'll want the script to end up returning a "javascript file" containing something like this:

document.getElementById('content-holder').innerHTML="<html>this is my file</html>";

On the client (your static html page served from server2), you can then just place your content holder:

<div id='content-holder'></div>

and then a script to pull in content from server1:

<script type="text/javascript">
var getXsS = function(url)
{
    var ss = 's' + 'cr' + 'ip' + 't';
    var cst = document.getElementsByTagName(ss)[document.getElementsByTagName(ss).length-1];
    var ts = 1*new Date();
    var e = document.createElement(ss);
    e.async=1;
    var tsstr = '_ts1_='+ts;
    if((''+url).indexOf('?')==-1){tsstr='?'+tsstr;}else{tsstr='&'+tsstr;}
    var url2 = url+tsstr;
    e.src=url2;
    cst.parentNode.insertBefore(e,cst);
};
getXsS('http://server1:8080/platform/collections/123-456-789');
</script>

Note that if server1 is using SSL then server2 must be using SSL also.

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