Error posting to URL: appengine.google.com/api/appversion/create - 404

问题

I have created a maven google app engine project from appengine-cloudsql-native-mysql-hibernate-jpa-demo-java. My project includes Rest webservices, Java, JPA and Hibernate.

Locally everything (rest webservices and database connection) working perfect. But when I try to deploy my code ...

I have a problem exactly same as Error posting to URL: appengine.google.com/api/appversion/create - 404.

I tried all possible ways (enlisted in above link) to solve it but unable to solve it.

Anybody can help me?

回答1:

Solution:

I have gone through many links but no luck, but now I am able to solve it using following step(s)

1. You must be signed in in the eclipse with a google account. (already done)

2. You must configure cloud sql (if you are using database - mysql in my case) (already done)

3. After that run maven command something like mvn appengine:update (already done)

4. Permissions. ( This is where I stuck ). Open the project on google app engine https://console.cloud.google.com/ . Goto IAM & Admin, select project then permissions. After that you see that your email id (say abcd@gmail.com) will be listed as an owner and another(dummy) email address like 664581334627-compute@developer.gserviceaccount.com and/or 664581334627@cloudservices.gserviceaccount.com. Give all above 3 email addresses rights of Project Editor and App Engine Deployer.

After this run mvn appengine:update and you will see there will be no exception/error. And you code will be deployed successfully.

P.S.: already done means that in original post I have already done these steps, but just wanted to let you know all possible steps.

来源：https://stackoverflow.com/questions/41636846/error-posting-to-url-appengine-google-com-api-appversion-create-404