1. 判断java版本

java -version

2. 安装maven

cd /usr/local
wget http://www-eu.apache.org/dist/maven/maven-3/3.5.2/binaries/apache-maven-3.5.2-bin.tar.gz
sudo tar xzf apache-maven-3.5.2-bin.tar.gz
sudo ln -s apache-maven-3.5.2  maven

3. 设置环境变量

sudo vi /etc/profile.d/maven.sh
export M2_HOME=/usr/local/maven
export PATH=${M2_HOME}/bin:${PATH}
source /etc/profile.d/maven.sh

4. 检查maven版本

mvn -version

5. 清理环境

rm -f /usr/local/apache-maven-3.5.2-bin.tar.gz