I found the solution:
Use low-level API (help here: http://ikaisays.com/2010/06/29/using-asynchronous-urlfetch-on-java-app-engine/ - thank Ikai Lan so much). And you must use FetchOptions.Builder.doNotValidateCertificate() to turn of Validate certificate process... -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
