title: redirect external url in browser
body: <p>After I get a certain url from my action class, I want to redirect that url [https://api.login.yahoo.com/oauth/v2/request_auth?oauth_token=abcdefg ] and show that url in browser automatically. But now I am getting No Action Mapped 404 message , although I passed url from action class correctly .</p>
  
  <pre><code>public String getMail(){
          try {  //some code
  
              url = accessToken.getCallbackUrl();
              if(url != null){
  
                  return "redirect";
              }
  
              return "input";
  
          } catch (UnsupportedOperationException e) {
              return "input";
          }
      }
  
      &lt;action name="getMail" method="getMail"
                    class="test.MailAction"&gt;
                  &lt;result name="input"&gt;/index.jsp&lt;/result&gt;
                  &lt;result name="redirect" type="redirect"&gt;${url}&lt;/result&gt;
      &lt;/action&gt;
  </code></pre>