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/

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

brew install maven31 (if you have homebrew)

两个方法

(use homebrew) Auto install: Command: brew install maven Pros and cons Pros: easy Cons: (probably) not latest version Manually install (for latest version): Pros and cons Pros: use your expected any (or latest) version Cons: need self to do it Steps download latest binary (apache-maven-3.6.3-bin.zip) version from Maven offical download uncompress it (apache-maven-3.6.3-bin.zip) and added maven path into environment variable PATH normally is edit and add: export PATH=/path_to_your_maven/apache-maven-3.6.3/bin:$PATH into your startup script( ~/.bashrc or ~/.zshrc etc.)

额外的注意

如何立即生效并检查安装是否正确?

A:

source ~/.bashrc
echo $PATH
which mvn
mvn --version

这里的输出:

➜  bin pwd
/Users/crifan/dev/dev_tool/java/maven/apache-maven-3.6.3/bin
➜  bin ll
total 64
-rw-r--r--@ 1 crifan  staff   228B 11  7 12:32 m2.conf
-rwxr-xr-x@ 1 crifan  staff   5.6K 11  7 12:32 mvn
-rw-r--r--@ 1 crifan  staff   6.2K 11  7 12:32 mvn.cmd
-rwxr-xr-x@ 1 crifan  staff   1.5K 11  7 12:32 mvnDebug
-rw-r--r--@ 1 crifan  staff   1.6K 11  7 12:32 mvnDebug.cmd
-rwxr-xr-x@ 1 crifan  staff   1.5K 11  7 12:32 mvnyjp
➜  bin vi ~/.bashrc
➜  bin source ~/.bashrc
➜  ~ echo $PATH
/Users/crifan/dev/dev_tool/java/maven/apache-maven-3.6.3/bin:xxx
➜  bin which mvn
/Users/crifan/dev/dev_tool/java/maven/apache-maven-3.6.3/bin/mvn
➜  bin mvn --version
Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
Maven home: /Users/crifan/dev/dev_tool/java/maven/apache-maven-3.6.3
Java version: 1.8.0_112, vendor: Oracle Corporation, runtime: /Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre
Default locale: zh_CN, platform encoding: UTF-8
OS name: "mac os x", version: "10.14.6", arch: "x86_64", family: "mac"

详情请参考我的(中文)帖子:【已解决】Mac中安装Gradle

当我最近升级到OS X Mavericks时，我的maven构建开始失败。所以我需要再次安装maven，因为它不是内置的。然后我试着输入命令:

brew install maven 

它可以工作，但它安装了maven的3.1.1版本，这对一些用户(https://cwiki.apache.org/confluence/display/MAVEN/AetherClassNotFound)造成了一些问题。因此，如果遇到同样的问题，您可能希望安装较早的Maven版本3.0.5。要在Homebrew中做到这一点，你必须执行以下命令:

brew install https://raw.github.com/Homebrew/homebrew-versions/master/maven30.rb

就是这样，它将使用不同的Homebrew公式，这将为您提供maven 3.0.5。

您可以使用自制软件安装maven。命令为 $ brew安装maven