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POXMLHttpRequest cannot load *...* Origin : * is not allowed by Access-Control-Allow-Origin
 

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    <p>I am trying to use extjs store to talk to a Jersey rest Java application (running at tomcat) that returns a Json. And I am trying to use Json to print to a grid component. This is my store code.</p> <pre><code>Ext.define('WSC.store.Users', { extend: 'Ext.data.Store', fields: ['period','tot_units', 'tot_selling_price'], model: 'WSC.model.User', proxy: { type: 'rest', url : 'http://localhost:8080/mondrianCube/services/query/querygoeshere/json', reader: { type: 'json', root: 'table' } }, autoLoad: true </code></pre> <p>});</p> <p>The store was not able to read the json obtained. Most of the recommendations were to add response headers(Access-Control-Allow-Origin) to the webapp(running at tomcat). So I added the response headers like below.</p> <pre><code>@Path("/query/{qryParam}/json") @GET @Produces(MediaType.APPLICATION_JSON) public static Response jsonResult(@PathParam("qryParam") String qryParam) throws JSONException { executeQuery("select {[Measures].members} on columns, {Time.[2010], Time.[2010]} on rows from sales" ); String json = (new JSONObject(((new ResultSetConvert(result)).toJson()))).toString(); return Response.ok(json).header("Access-Control-Allow-Origin","*").build(); } </code></pre> <p>Even then I get the same error as below</p> <p><img src="https://i.stack.imgur.com/X2cKd.png" alt="http://i.stack.imgur.com/X2cKd.png"></p> <p>What am I missing here?</p> <p>P.S If the url points to a file in the same domain, the store is able to read the json in the file.</p>
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