error with google app engine deploy

Question

I have a problem with the deployment on Google app engine. The project runs fine on my PC but when I upload it, I get the following message:

Please enter code: Either the access code is invalid or the OAuth token is revoked.Details: invalid_grant

After that the browser opens a page where Google app engine asks for permission and, once I give it, provides a code to be copied in the application. But the input window doesn't work since it's stuck with the previous message.

I'm using NetBeans v8 with appengine-java-sdk v1.9, and got the same error with the example project

I alredy tried to delete the file .appcfg_oauth2_tokens_java but it didn't work.

Any help would be appreciated, thanks.

Appengine-web.xml

<?xml version="1.0" encoding="utf-8"?> <appengine-web-app xmlns="http://appengine.google.com/ns/1.0"> <application>fiery-plate-97015</application> <version>1</version> <threadsafe>true</threadsafe> <system-properties>     <property name="java.util.logging.config.file" value="WEB-   INF/logging.properties"/> </system-properties> 

Web.xml

<?xml version="1.0" encoding="utf-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <servlet>     <servlet-name>guestbook</servlet-name>     <servlet-class>guestbook.GuestbookServlet</servlet-class> </servlet> <servlet-mapping>     <servlet-name>guestbook</servlet-name>     <url-pattern>/guestbook</url-pattern> </servlet-mapping>  <servlet>     <servlet-name>sign</servlet-name>     <servlet-class>guestbook.SignGuestbookServlet</servlet-class> </servlet> <servlet-mapping>     <servlet-name>sign</servlet-name>     <url-pattern>/sign</url-pattern> </servlet-mapping>  <welcome-file-list>     <welcome-file>guestbook.jsp</welcome-file> </welcome-file-list> 

Situation update: i never used maven so i took me a while and a lot of errors to make it works. At the end i created a new project following step by step google instruction: https://cloud.google.com/appengine/docs/java/gettingstarted/creating. The project works fine on my pc and seems to deploy correctly but the i get a 500 server error when visiting the page. Meanwhile maven installation messed up with netbeans and, when deploying the first project, i get a exception before being asked for the code:

java.lang.RuntimeException: Cannot get the System Java Compiler. Please use a JDK, not a JRE.

i checked the system variables to point to jdk folder but the problem persists.

Answer 1

When running mvn appengine:update and you get this:

"Either the access code is invalid or the OAuth token is revoked.Details: invalid_grant" 

and then nothing, you need to delete

~/.appcfg_oauth2_tokens_java 

On running the command again the browser will launch and ask you to login (to your google app engine account). After login you will get a code to paste into the command line...

Answer 2

Your <application>guestbook</applicaiton tag in your appengine-web.xml is incorrect, I believe. That should be your unique project ID at http://console.developers.google.com. You can create one there if you don't have one.