打开TERMINAL窗口并检查是否已经安装了它。

类型:

$ mvn –version

你应该看到:

Apache Maven 3.0.2 (r1056850; 2011-01-09 01:58:10+0100)
Java version: 1.6.0_24, 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: “10.6.7″, arch: “x86_64″, family: “mac”

如果你还没有安装Maven，那么下面是如何下载和安装Maven，并在Mac OS X上配置环境变量:

http://bitbybitblog.com/install-maven-mac/

% sudo port selfupdate; 
% sudo port upgrade outdated;
% sudo port install maven3;
% sudo port select --set maven maven3;

— add following to .zshenv -- start using zsh if you dont —
set -a
[[ -d /opt/local/share/java/maven3 ]] &&
    M3_HOME=/opt/local/share/java/maven3 &&
    M2_HOME=/opt/local/share/java/maven3 &&
    MAVEN_OPTS="-Xmx1024m" &&
    M2=${M2_HOME}/bin
set +a

免责声明:这是一个完整的答案，考虑到OS X的最后一个版本(10.9 AKA Mavericks)。我知道我在这个答案中编译的所有内容都已经出现在页面中，但在一个答案中清楚地表达出来会让它更清楚。

首先，对于以前的OS X版本，Maven是默认安装的。如果没有Java，在终端上运行you@host:~ $ Java将提示您安装Java。

在Mac OS X 10.9 (Mavericks)中，Maven不再默认安装。然后可能有不同的选择:

Using Homebrew: you@host:~$ brew install maven will install latest Maven (3.5.2 on 02/01/2018) you@host:~$ brew install maven30 will install Maven 3.0 if needed Using Macports: (I did not test this) you@host:~$ sudo port install maven will install latest Maven (?) or: you@host:~$ sudo port install maven3 will Install Maven 3.0 you@host:~$ sudo port select --set maven maven3 selects that version of Maven Installing by hand: Download Maven from its homepage Follow the installation instructions: Extract the distribution archive, i.e.apache-maven-3.3.9-bin.tar.gz to the directory you wish to install Maven 3.3.9. The subdirectory apache-maven-3.3.9 will be created from the archive. Optional: Add the MAVEN_OPTS environment variable to specify JVM properties, e.g. export MAVEN_OPTS="-Xms256m -Xmx512m". This environment variable can be used to supply extra options to Maven. Make sure that JAVA_HOME is set to the location of your JDK, e.g. export JAVA_HOME=$(/usr/libexec/java_home -v 1.8) and that $JAVA_HOME/bin is in your PATH environment variable (although that might not be necessary with the latest Mac OS X versions and the Oracle JDK). Add extracted apache-maven-3.3.9/bin to your $PATH Run mvn --version to verify that it is correctly installed.

brew install maven31 (if you have homebrew)

这对我很管用。它更简单、更干净。 打开Mac终端，输入:

export MAVEN_HOME=~/apache-maven-3.8.1
export PATH=$PATH:$MAVEN_HOME/bin

当你打字的时候

mvn -version

你得到一个输出:

Apache Maven 3.8.1 (05c21c65bdfed0f71a2f2ada8b84da59348c4c5d)
Maven home: /Users/nisha/apache-maven-3.8.1
Java version: 16.0.1, vendor: Oracle Corporation, runtime: /Library/Java/JavaVirtualMachines/jdk-16.0.1.jdk/Contents/Home
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "11.4", arch: "x86_64", family: "Mac"

**编辑补充:

当您关闭终端并再次打开时，您将得到mvn: command not found，您将不得不再次运行该命令。

参考这个帖子永久安装

在马华力号上，在终点站跑 xcode-select——安装 安装命令行工具。