CODEWITHSUNDEEP
javamacosmavenjava-home
byc
byc

Reputation: 141

no goals specified exception when installing maven

Looks like this has been a repeating challenge to set up maven, but I'm also having my own challenges on this...! I'm a newbie to maven and java, would appreciate any help here!

Here's my current set up on MacOS v10.15.7

As maven suggested I first define my JAVA_HOME (not set by default in OSX)

cd ~
echo export "JAVA_HOME=\$(/usr/libexec/java_home)" >> ~/.bash_profile
echo $JAVA_HOME
/Library/Java/JavaVirtualMachines/openjdk-12.0.2.jdk/Contents/Home

echo $PATH
/Users/byc/anaconda3/bin:/Library/Frameworks/Python.framework/Versions/3.7/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/Library/Apple/usr/bin

Then I went on downloading Maven 3.6.3 and created the folder at /Users/byc/Downloads/apache-maven-3.6.3, ran the following

export PATH=/Users/byc/Downloads/apache-maven-3.6.3/bin:$PATH
mvn --verison
-bash: mvn: command not found

When I ran mvn -e I got the following. Does it mean Maven isn't binding to $PATH properly?

mvn -e
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  0.059 s
[INFO] Finished at: 2020-12-01T19:03:43Z
[INFO] ------------------------------------------------------------------------
[ERROR] No goals have been specified for this build. You must specify a valid lifecycle phase or a goal in the format <plugin-prefix>:<goal> or <plugin-group-id>:<plugin-artifact-id>[:<plugin-version>]:<goal>. Available lifecycle phases are: validate, initialize, generate-sources, process-sources, generate-resources, process-resources, compile, process-classes, generate-test-sources, process-test-sources, generate-test-resources, process-test-resources, test-compile, process-test-classes, test, prepare-package, package, pre-integration-test, integration-test, post-integration-test, verify, install, deploy, pre-clean, clean, post-clean, pre-site, site, post-site, site-deploy. -> [Help 1]
org.apache.maven.lifecycle.NoGoalSpecifiedException: No goals have been specified for this build. You must specify a valid lifecycle phase or a goal in the format <plugin-prefix>:<goal> or <plugin-group-id>:<plugin-artifact-id>[:<plugin-version>]:<goal>. Available lifecycle phases are: validate, initialize, generate-sources, process-sources, generate-resources, process-resources, compile, process-classes, generate-test-sources, process-test-sources, generate-test-resources, process-test-resources, test-compile, process-test-classes, test, prepare-package, package, pre-integration-test, integration-test, post-integration-test, verify, install, deploy, pre-clean, clean, post-clean, pre-site, site, post-site, site-deploy.
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:97)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:567)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
[ERROR] 
[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/NoGoalSpecifiedException

Upvotes: 0

Views: 1121

Answers (1)

Laird Nelson
Laird Nelson

Reputation: 16238

Several things:

  1. I'm not sure why Maven documentation continues to tell people to set JAVA_HOME. This is unnecessary, provided that javac (yes, javac, not sure why) is in your path (which usually means java as well is in your path). The source code confirms it.
  2. You misspelled version as verison which is why you received -bash: mvn: command not found.
  3. You specified neither a Maven lifecycle phase nor a plugin goal so Maven didn't know what to do.

Upvotes: 1

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