Appengine：后端API教程，无法构建项目

Question

I have completed the Java Tutorial for Google App Engine. Now I wanted to do the Backend API Tutorial, but I get errors..

I installed Maven and I was able to generate the project from the command line with maven as described in "Creating an Endpoints Backend Project". I have problems with the next step: Configuring the Maven Project for Endpoints .

Under the point "Setting required plugin configuration" it says "2. Locate and replace the default appengine-maven-plugin configuration entirely with the following: ", before they were talking about the pom file from "helloendpoints/helloendpoints-war".

--> But in that pom.xml-file from "helloendpoints/helloendpoints-war", I cannot locate that configuration... I found that in the pom file of "helloendpoints/helloendpoints-ear".

Question 1: Is this (in ear-folder) the pom-file that i shall edit or should there be that configuration in the pom from the war folder?

However, replacing that code there or not both gives me an error when I invoke maven with "mvn install".

The error-message is the following: "Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.3:war on project helloendpoints-war: Execution default-war of goal org.apache.maven.plugins:maven-war-plugin:2.3:war failed: basedir C:\\Users...\\helloendpoints\\helloendpoints-war\\target\\generated-sources\\appengine-endpoints does not exist". And I can see that in "...\\helloendpoints-war\\target", there is no "generated-sources"-folder!

And this is where I am stuck now.

Question 2: Can all this be done without Maven and is there any tutorial for that? Because that is another source of errors and I had to deal with enough errors now... I just want to get an understanding of how the appengine works, how I can use it for my android app and then start from a WORKING basic-project, but I already had to deal with lots of errors. This is pretty frustrating, because I just wanted to do what is told in the tutorial and I still did not write any own code yet...

Question 3: In the next part of the tutorial , are they using the m2e-plugin or anything? Because that was mentioned nowhere, but somehow you have to import that maven project into eclipse...

Answer 1

Yes you can do it without Maven . This and this are simple tutorials from Google that shows you how to add a backend to an Android project.

Answer 2

I would suggest to delete this topic, because I switched to the tutorial without Maven, which has not much to do with my original post. That tutorial works now, but I cannot explain what solved it. I think this whole topic is more confusion and also wasted time for anyone else, who is trying to find an answer here.