Cannot perform 'mvn camel:run' on Camel Example Project - maven

Question

I am new to camel and I've been trying to run one of the examples found in camel called camel-example-twitter-websocket, which may be found here.
When I run mvn compile it works successfully
$ mvn compile
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Camel :: Example :: Twitter WebSocket 2.17-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-enforcer-plugin:1.4:enforce (enforce-maven) # camel-example-twitter-websocket ---
[INFO]
[INFO] --- maven-bundle-plugin:2.3.7:cleanVersions (versions) # camel-example-twitter-websocket ---
[INFO]
[INFO] --- maven-remote-resources-plugin:1.5:process (default) # camel-example-twitter-websocket ---
[INFO]
[INFO] --- maven-resources-plugin:2.7:resources (default-resources) # camel-example-twitter-websocket ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 4 resources
[INFO] Copying 3 resources
[INFO]
[INFO] --- maven-resources-plugin:2.7:resources (default) # camel-example-twitter-websocket ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 4 resources
[INFO] Copying 3 resources
[INFO]
[INFO] --- maven-compiler-plugin:3.5.1:compile (default-compile) # camel-example-twitter-websocket ---
[INFO] Nothing to compile - all classes are up to date
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.504 s
[INFO] Finished at: 2016-03-18T15:27:30-04:00
[INFO] Final Memory: 22M/437M
[INFO] ------------------------------------------------------------------------
But when I run the second step mvn camel:run it does not work and I get the following output
$ mvn camel:run
[INFO] Scanning for projects...
[WARNING] The POM for org.apache.camel:camel-maven-plugin:jar:2.17-20151107.033312-28 is invalid, transitive dependencies (if any) will not be av ailable, enable debug logging for more details
[WARNING] Failed to retrieve plugin descriptor for org.apache.camel:camel-maven-plugin:2.17-SNAPSHOT: Plugin org.apache.camel:camel-maven-plugin: 2.17-SNAPSHOT or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.camel:camel-maven-plugin:jar:2. 17-SNAPSHOT
[WARNING] The POM for org.eclipse.m2e:lifecycle-mapping:jar:1.0.0 is missing, no dependency information available
[WARNING] Failed to retrieve plugin descriptor for org.eclipse.m2e:lifecycle-mapping:1.0.0: Plugin org.eclipse.m2e:lifecycle-mapping:1.0.0 or one of its dependencies could not be resolved: Failure to find org.eclipse.m2e:lifecycle-mapping:jar:1.0.0 in https://repo.maven.apache.org/maven2 w as cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced
[WARNING] The POM for org.apache.maven.plugins:maven-surefire-plugin:jar:{maven-surefire-plugin-version} is missing, no dependency information av ailable
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-surefire-plugin:{maven-surefire-plugin-version}: Plugin org.apa che.maven.plugins:maven-surefire-plugin:{maven-surefire-plugin-version} or one of its dependencies could not be resolved: Failure to find org.apa che.maven.plugins:maven-surefire-plugin:jar:{maven-surefire-plugin-version} in https://repo.maven.apache.org/maven2 was cached in the local repos itory, 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://repository.apache.org/content/repositories/snapshots/org/apache/maven/plugins/maven-metadata.xml
Downloading: https://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml
Downloading: https://repository.apache.org/content/repositories/snapshots/org/codehaus/mojo/maven-metadata.xml
Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml (13 KB at 36.9 KB/sec)
Downloaded: https://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml (20 KB at 57.4 KB/sec)
Downloaded: https://repository.apache.org/content/repositories/snapshots/org/apache/maven/plugins/maven-metadata.xml (9 KB at 9.7 KB/sec)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.140 s
[INFO] Finished at: 2016-03-18T15:28:29-04:00
[INFO] Final Memory: 27M/327M
[INFO] ------------------------------------------------------------------------
[ERROR] No plugin found for prefix 'camel' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] availabl e from the repositories [local (C:\Users\myNameHere\.m2\repository), apache.snapshots (https://repository.apache.org/content/repositories/snapshots/), 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
It looks like this is more of a Maven issue than it is a Camel issue. I put in the default .m2/settings.xml file (before I had a mirror configured for my companies Nexus repository. I thought that might be messing things up so I took it all out). Out of desperation I even tried adding in the plugin repository from here http://camel.apache.org/maven-2-snapshot-repository-in-pom.html but that did not work.

Answer 1

Read the readme file how to run the examples.
Some examples run using mvn camel:run and others using mvn exec:java and what else.
And you run from the master branch in the source code. Instead you should download a version of Camel such as the latest 2.16.2 and use that. It ships the examples in the examples directory: http://camel.apache.org/download
If you run from master branch in the source code. You need to rebuild Camel first, see building: http://camel.apache.org/building.html

Answer 2

I've tested myself, and putting the plugin 2.16 don't solve it neither.
But in readme, I found this :
We have described this in more details at the Camel twitter documentation:
http://camel.apache.org/twitter
You will need to compile this example first:
mvn compile
To run the example type
mvn exec:java
Then open a browser to see live twitter updates in the web page
http://localhost:9090
Worked for me, I hope it will work for you too. I'll investigate the problem with the plugin that doesn't seems to export the prefix latter.