Error running Google App Engine quickstart : POM for com.google.appengine:appengine-maven-plugin:jar:1.9.24 is missing

Question

Any help getting me past this error would be appreciated. Google searches don't seem to turn up any helpful results. I am on a Macbook Pro running OSX Yosemite and using the Java 1.7.0_71 with Maven 3.3. Maven was installed via HomeBrew.

To get an introduction of Google App Engine, I followed the instructions for the quickstart from https://cloud.google.com/appengine/docs/java/gettingstarted/introduction and reach the page instructions at https://cloud.google.com/appengine/docs/java/gettingstarted/ui_and_code without issue. After creating the guestbook.jsp file and running mvn appengine:devserver I get the following build failure.

[INFO] Scanning for projects...
[WARNING] The POM for com.google.appengine:appengine-maven-plugin:jar:1.9.24 is missing, no dependency information available
[WARNING] Failed to retrieve plugin descriptor for com.google.appengine:appengine-maven-plugin:1.9.24: Plugin com.google.appengine:appengine-maven-plugin:1.9.24 or one of its dependencies could not be resolved: Failure to find com.google.appengine:appengine-maven-plugin:jar:1.9.24 in https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml
Downloading: https://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml
Downloaded: https://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml (20 KB at 4.3 KB/sec)
Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml (13 KB at 2.2 KB/sec)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6.435 s
[INFO] Finished at: 2015-07-22T21:10:29-04:00
[INFO] Final Memory: 10M/245M
[INFO] ------------------------------------------------------------------------
[ERROR] No plugin found for prefix 'appengine' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (/Users/nissandookeran/.m2/repository), central (https://repo.maven.apache.org/maven2)] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/NoPluginFoundForPrefixException

heenenee · Accepted Answer · 2015-07-23 01:56:23Z

2

Version 1.9.24 of the Appengine Maven Plugin hasn't been deployed to Maven Central yet, for whatever reason. Probably the easiest thing to do is to open your pom.xml, find the <version> of appengine-maven-plugin that it's using, and make it use 1.9.23 instead of ${appengine.version} or 1.9.24 or whatever it's using.

answered Jul 23, 2015 at 1:56

heenenee

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Adriano · Accepted Answer · 2016-02-12 16:05:15Z

1

If it is due to a new version you can try also to run mvn appengine:devserver -U

answered Feb 12, 2016 at 16:05

Adriano

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ruhong Over a year ago

Official reference: If there is a failure indicating that the App Engine Maven plugin is missing, this could be due to the fact that a new version was recently pushed to the Maven repo. To remedy this, invoke Maven with the -U option: mvn appengine:devserver -U

Pramod Alagambhat · Accepted Answer · 2017-10-24 17:31:43Z

0

You have to include the following in the pom file

        <plugin>
           <groupId>com.google.cloud.tools</groupId>
           <artifactId>appengine-maven-plugin</artifactId>
           <version>1.9.48</version>
        </plugin>

edited Oct 24, 2017 at 17:31

answered Oct 24, 2017 at 16:38

Pramod Alagambhat

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