How To Install Maven On Mac OSX

Since Lion 10.7.1 10.6.8 MacOSx Snow Leopard (correct me if wrong), Mac OS X comes with Apache Maven 3 built in, and can be located at /usr/share/maven。

(標註：安裝Eclipse會自帶)

1. Maven Built-In

To verify the Maven installation, in terminal, issue the command mvn -version.

$mvn -version  
Apache Maven 3.0.3 (r1075438; 2011-03-01 01:31:09+0800) Maven home: /usr/share/maven
Java version: 1.6.0_33, vendor: Apple Inc.
Java home: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
Default locale: en_US, platform encoding: MacRoman
OS name: "mac os x", version: "10.7.4", arch: "x86_64", family: "mac"

1.1 – Where is Maven installed?
A quick check with whereis command :

$ whereis mvn 

/usr/bin/mvn

$ cd /usr/bin 

$$ ls -ls | grep mvn 

8 lrwxr-xr-x 1 root   wheel 24 May 23 15:57 mvn -> /usr/share/maven/bin/mvn

By default, Maven is installed at /usr/share/maven. No configuration is needed.

2. Install Maven Manually

After the upgrade of Mac OS X Mavericks, Maven was removed (no idea why). So, You have to install it manually.

2.1 – Download Maven
Download the Maven, for example apache-maven-3.1.1-bin.tar.gz. Extracts it,

tar -xvf apache-maven-3.1.1-bin.tar.gz
  $pwd /Users/mkyong/apache-maven-3.1.1

2.2 – Set Maven command in environment variable.
Update ~/. bash_profile – create this file if doesn’t exist.

$ vim ~/.bash_profile

~/.bash_profile

export M2_HOME=/Users/mkyong/apache-maven-3.1.1 

export PATH=$PATH:$M2_HOME/bin

(標註：按Esc鍵切換編輯狀態與命令狀態。在命令狀態下，輸入:wq回車，表明保存後退出，輸入:q!回車，表明不保存就退出)

Restart the terminal. Test it.

$mvn -version  
Apache Maven 3.1.1 (0728685237757ffbf44136acec0402957f723d9a; 2013-09-17 23:22:22+0800) Maven home: /Users/mkyong/apache-maven-3.1.1
Java version: 1.7.0_05, vendor: Oracle Corporation
Java home: /Library/Java/JavaVirtualMachines/1.7.0.jdk/Contents/Home/jre
Default locale: en_US, platform encoding: UTF-8 OS name: "mac os x", version: "10.9", arch: "x86_64", family: "mac"

3. Post Configuration

A common post-installation for Maven, change the local repository to another location.

$sudo vim /usr/share/maven/conf/settings.xml
  $vim /usr/mkyong/maven/conf/settings.xml

settings.xml

<!-- localRepository  | The path to the local repository maven will use to store artifacts.  |  | Default: ~/.m2/repository  

<localRepository>/path/to/local/repo</localRepository>  --> 

<localRepository>/Users/mkyong//maven/repo/</localRepository>

Above example changed the default repository from ~/.m2/repository to /Users/mkyong//maven/repo/.

References

1. Apache Maven
2. Set environment variables on Mac OS X