title: Getting Json data from another domain, within a proxy servlet
body: <p>I'm working on a GWT project, in which I have to fetch some JSON data from a real web-domain. Due to SOP policy, GWT fails to get those data.</p>
  
  <p>To address this, as suggested in <a href="http://code.google.com/webtoolkit/doc/latest/tutorial/Xsite.html#design" rel="nofollow noreferrer">GWT docs</a>, I have created some proxy servlets within GWT, which in turn should call the actual JSON provider external url.</p>
  
  <p>Does anybody know how should I retrieve json data from an external url, within a servlet?</p>
  
  <p>Thanks</p>