2) 下载Maven

Installing Maven
  ----------------
1) Unpack the archive where you would like to store the binaries, eg:

Unix-based operating systems (Linux, Solaris and Mac OS X)
 tar zxvf apache-maven-3.x.y.tar.gz
    
Windows
 unzip apache-maven-3.x.y.zip

2) A directory called "apache-maven-3.x.y" will be created.
3) Add the bin directory to your PATH, eg:

Unix-based operating systems (Linux, Solaris and Mac OS X)
 export PATH=/usr/local/apache-maven-3.x.y/bin:$PATH
    
Windows
 set PATH="c:\program files\apache-maven-3.x.y\bin";%PATH%

4) Make sure JAVA_HOME is set to the location of your JDK

5) Run "mvn --version" to verify that it is correctly installed.