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POUnable to make CORS POST request in javascript to java web service(jersey)?
 

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    <p>I am implementing Cross Resource Origin Sharing in Java Web services using Jersey.I created resource as followes:</p> <pre><code>@POST @Path("/getSubjects") @Consumes(MediaType.APPLICATION_JSON) @Produces(MediaType.APPLICATION_JSON) public Response getSubjects(TokenCheck tc) throws IOException, ServletException{ String token = tc.getToken(); String result = ""; if(!token.equals("") &amp;&amp; !token.equals(null)){ context.getRequestDispatcher("/GetSubjectsWs?token="+token).include(request, response); String subs = request.getAttribute("subjects").toString(); result = "{\"subjects\":\""+subs+"\"}"; }else { result = "{\"subjects\":\"['Invalid Token login again']\"}"; } JSONObject j = null; try { j = new JSONObject(result); } catch (JSONException e) { e.printStackTrace(); } return Response.status(200).entity(j).header("Access-Control-Allow-Origin", "*").header("Access-Control-Allow-Methods", "POST, GET, OPTIONS").header("Access-Control-Allow-Headers", "Content-Type:application/json").build(); } </code></pre> <p>and making post request using javascript as :</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;meta charset="utf-8"&gt; &lt;title&gt;JavaScript Client&lt;/title&gt; &lt;script type="text/javascript"&gt; function restReq() { var url = "http://localhost:8888/WebservicesServer/restful/getserver/getSubjects"; var json = { "token":"8495C211F11C9B18E6651E03EB2995BC" }; var client = new XMLHttpRequest(); client.open("POST", url, true); client.setRequestHeader("Access-Control-Request-Methods", "POST"); client.setRequestHeader("Content-Type", "application/json"); client.send(json); client.onreadystatechange = function() { if (client.readyState == 4) { if ( client.status == 200) console.log("success: " + client.responseText); else console.log("error: " +client.status+" "+ client.responseText); } }; } &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;input type="button" value="getSubjects" onclick="restReq();"&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>When i clicked getSubjects Button in chrome I am getting <strong>error as : XMLHttpRequest cannot load ..localhost:8888/WebservicesServer/restful/getserver/getSubjects. Origin null is not allowed by Access-Control-Allow-Origin</strong>. <strong>But i am able to get response with GET request</strong>,problem is with POST request my browser url file:///E:/Documents%20and%20Settings/Srinivas/Desktop/wars/JSClient2.html (File system) I tried in many ways like by setting origin etc, still unable to get json response (Server is Tomcat 7) please help to overcome this problem.</p>
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