Preferences -> Google -> App Engine keeps returning to original config + plugin execution problems

Question

I've been struggling so hard with Maven lately.

Issue #1)

I keep getting

Description Resource Path Location Type The App Engine SDK 'C:\Users\Paulo.m2\repository\com\google\appengine\appengine-api-1.0-sdk\1.9.24\appengine-api-1.0-sdk-1.9.24.jar' on the project's build path is not valid (SDK location 'C:\Users\Paulo.m2\repository\com\google\appengine\appengine-api-1.0-sdk\1.9.24\appengine-api-1.0-sdk-1.9.24.jar' is not a directory) jotageorcamento Unknown Google App Engine Problem

even though I have tried changing the config under preferences as shown below. Does anyone know where I can find this file and change it brute-forcefully?

Issue #2)

Normally, my Eclipse gives me

Description Resource Path Location Type Plugin execution not covered by lifecycle configuration: com.google.appengine:appengine-maven-plugin:1.9.24:endpoints_get_discovery_doc (execution: default, phase: compile) pom.xml /jotageorcamento line 187 Maven Project Build Lifecycle Mapping Problem

AND

Description Resource Path Location Type Plugin execution not covered by lifecycle configuration: org.codehaus.mojo:versions-maven-plugin:2.1:display-dependency-updates (execution: default, phase: compile) pom.xml /jotageorcamento line 134 Maven Project Build Lifecycle Mapping Problem

It runs both on Eclipse and through terminal with mvn appengine:devserver.

I read this post, and tried adding <pluginManagement> to get rid of this problem. It turned out that mvn appengine:devserver started giving

I would appreciate some help since I dug so much trying to find the solution, but nothing brought it to an end.

poussma poussma · Accepted Answer · 2015-09-07T20:44:29

I had the same issue and changing the order of the classpath entries in the .classpath fixed it.

The google app engine entry MUST BE BEFORE the Maven classpath entry. Reload and rebuild the project and you will get rid of #1, and it will probably also fix the #2 (no warranty...)

<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
    <attributes>
        <attribute name="maven.pomderived" value="true"/>
    </attributes>
</classpathentry>
<classpathentry kind="con" 
path="com.google.appengine.eclipse.core.GAE_CONTAINER/appengine-java-sdk-1.9.26"/>

must be

<classpathentry kind="con" 
path="com.google.appengine.eclipse.core.GAE_CONTAINER/appengine-java-sdk-1.9.26"/>
<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
    <attributes>
        <attribute name="maven.pomderived" value="true"/>
    </attributes>
</classpathentry>

Preferences -> Google -> App Engine keeps returning to original config + plugin execution problems

1 Answers