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I have my backend servlet like following :

  public class BackendServlet extends HttpServlet {

  private static final long serialVersionUID = 1L;

  private static final Logger LOG = Logger.getLogger(BackendServlet.class.getName());

  protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {

And then I put the google verification html file into my project root folder. And I also use google OAuth2 for the frontend. Then I verify it using webmaster tools, but it's said :

Reverification failed. Your verification file redirects to a disallowed location

And so I tried the alternative method, by using the meta-tag. I included the meta-tag that given on the webmaster page into the BackendServlet class as following :

protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
    PrintWriter writer = resp.getWriter();
    writer.println("<!doctype html><html><head>");
    writer.println("<meta name=\"google-site-verification\" content=\"verification_string_here\" />");

Then again I verify it, but it still gave me an error like following :

Verification failed. We couldn't find the verification meta tag.

Would anyone be so kindly to tell me what I did wrong and what I should do to get my backend site got verified by webmaster tools?


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These 2 methods require the site to be directly accessible on your domain over HTTP (port 80) - is that the case? Have you tried adding a TXT record in the domains DNS zone? –  w3d Apr 6 at 11:31
Hi w3d, thanks for the reply. my site is hosted on google app engine server, so it's domain is backendname-dot-appname.appspot.com. How to add this TXT record to this backend domain in google app engine server? thanks. –  user1012283 Apr 6 at 12:14
Ah, in that case I don't know whether it is possible to edit the DNS and add a TXT record - I would assume not. Maybe this question of StackOverflow can help: stackoverflow.com/questions/7030563/app-engine-webmaster-tools –  w3d Apr 6 at 16:13
Thanks for the links. So is the verification of the site only need to be done one time? And after that I can just use this site without need to do any verification in the future? thanks. –  user1012283 Apr 7 at 3:30
As far as GWT is concerned (whether this is different for app engine I don't know), the verification needs to be left in place as Google will periodically recheck this. –  w3d Apr 7 at 7:04

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