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POjQuery cors ajax request failing
 

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  1. POjQuery cors ajax request failing
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    <p>I'm trying to fire a cors ajax request with jQuery towards a different port in the same machine, below is my code (my application is running on an appache server on port 80):</p> <p>JS:</p> <pre><code>$(function(){ jQuery.support.cors = true; $.ajax({ type: "POST", url: "http://127.0.0.1:8080/sys_monitor/ccn", dataType: "text", contentType: "text/plain", data : {a: '11'}, success : function(res){ alert(res); $('#stage').html(res); }, error : function(jqXHR, text, exception){ if (jqXHR.status === 0) { alert ('Not connected.\nPlease verify your network connection.'); } else if (jqXHR.status == 404) { alert ('The requested page not found. [404]'); } else if (jqXHR.status == 500) { alert ('Internal Server Error [500].'); } else if (exception === 'parsererror') { alert ('Requested JSON parse failed.'); } else if (exception === 'timeout') { alert ('Time out error.'); } else if (exception === 'abort') { alert ('Ajax request aborted.'); } else { alert ('Uncaught Error.\n' + jqXHR.responseText); } } }); }); </code></pre> <p>Servlet ("post" is written to the console) running on tomcat (eclipse) on port 8080:</p> <pre><code>protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.getWriter().write("hello there"); System.out.println("post"); } </code></pre> <p>using firebug I can see the request (with response code 200) and content length 11 (empty result tab), but the error function is being executed with XHR status 0 </p> <p>(side question1: why is firebug displaying "xml" as type ?):</p> <p>(side question2: why isn't there an OPTIONS request before the POST ?):</p> <p><img src="https://i.imgur.com/S1Q1XCn.png" alt="firebug"></p> <p>I also tried with RESTClient plugin for firefox, and I'm getting the wanted result:</p> <p><img src="https://i.imgur.com/wqzTj6t.png" alt="RESTClient plugin"></p> <p>all help/tips is welcome</p>
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    1. USRima
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    1. COso, did you actually enable CORS?
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      1. POjQuery cors ajax request failing
      1. USDavid Fregoli
    2. COhow do we do that ? I thought this line **jQuery.support.cors = true;** would do it
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      1. POjQuery cors ajax request failing
      1. USRima
    3. COAre you getting the same behavior when running on Chrome, the XHR object need to read the HTTP status response in order to return the proper (status's) code. I doubt this happens when you are on local machine
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      1. POjQuery cors ajax request failing
      1. USelsadek
 

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