Migrating GAE project to Java 8 - get XML validation error after adding runtime property to appengine-web.xml
问题 I'm migrating a GAE/GWT project to Java 8 and get the following error when deploying: XML error validating <?xml version="1.0" encoding="utf-8"?> <appengine-web-app xmlns="http://appengine.google.com/ns/1.0"> <runtime>java8</runtime> <application>XXXAppNameXXXX</application> <version>2</version> <!-- Allows App Engine to send multiple requests to one instance in parallel: --> <threadsafe>true</threadsafe> <!-- Configure serving/caching of GWT files --> <static-files> <include path="**" /> <!-