title: Google App Engine - Blob Store Service with a Dispatcher Servlet
body: <p>I have a central dispatcher servlet that has a servlet mapping of :</p>
  
  <p>&lt;servlet-mapping&gt; <br/>
      &lt;servlet-name&gt;dispatcher&lt;/servlet-name&gt;<br/>
      &lt;url-pattern&gt;/&lt;/url-pattern&gt;<br/>
    &lt;/servlet-mapping&gt;<br/></p>
  
  <p>When i try to use the blob store service's createUploadUrl("/uploadComplete") it maps to a URL for e.g <strong><em>'/_ah/upload/agp0d2VldG15cGljchsLEhVfX0Jsb2JVcGxvYWRTZXNzaW9uX18YEgw'</em></strong>.</p>
  
  <p>Before the Blob store service can handle the upload and redirect to /uploadComplete; my dispatcher servlet gets called and i am therefore not being able to upload anything.</p>
  
  <p>Is there a servlet/ filter that i can map to <strong>/_ah/upload/*</strong> in my web.xml ?</p>
  
  <p>How do i avoid the dispatcher servlet from getting called before the Blob store service can do its thing?</p>