title: How to get a Facebook signed request ('signed_request') in Java
body: <p>I am building an application through which on click of (GoToApp) I want to receive the <code>signed_request</code> parameter sent from a Facebook response. I have created the application, gave the necessary site and canvas URLs. </p>
  
  <p>What are the steps through which I can receive the <code>signed_request</code> parameter?</p>