CentOS7 安装Tomcat9,Maven

yum install -y wget
yum install -y net-tools
yum install -y gcc
yum install -y zlib zlib-devel

查看防火墙状态
firewall-cmd --state

停止firewall
systemctl stop firewalld.service

禁止firewall开机启动
systemctl disable firewalld.service

JAVA SDK(http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html):
wget https://download.oracle.com/otn/java/jdk/8u221-b11/230deb18db3e4014bb8e3e8324f81b43/jdk-8u221-linux-x64.tar.gz?AuthParam=1566151122_466245ecc69749dd492cf588c934cd04
tar zxf jdk-8u221-linux-x64.tar.gz?AuthParam=1566151122_466245ecc69749dd492cf588c934cd04 -C /usr/local/java/
rm -rf jdk-8u221-linux-x64.tar.gz?AuthParam=1566151122_466245ecc69749dd492cf588c934cd04
vi /etc/profile，增加到尾部：
export JAVA_HOME=/usr/local/java/jdk1.8.0_221
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

source /etc/profile
ln -s /usr/local/java/jdk1.8.0_221/bin/java /usr/bin/java
检查：java -version

Tomcat9:
cd /usr
wget http://mirror.bit.edu.cn/apache/tomcat/tomcat-9/v9.0.22/bin/apache-tomcat-9.0.22.tar.gz
tar zxf apache-tomcat-9.0.22.tar.gz
mv apache-tomcat-9.0.22 tomcat9
rm -rf apache-tomcat-9.0.22.tar.gz
sh tomcat9/bin/startup.sh

Maven:
wget http://mirrors.tuna.tsinghua.edu.cn/apache/maven/maven-3/3.6.1/binaries/apache-maven-3.6.1-bin.tar.gz
tar -zxf apache-maven-3.6.1-bin.tar.gz
rm -rf apache-maven-3.6.1-bin.tar.gz
mv apache-maven-3.6.1 maven3.6
vi /etc/profile，增加到尾部：
export MAVEN_HOME=/usr/maven3.6
export PATH=${MAVEN_HOME}/bin:$PATH

source /etc/profile
检查：mvn -v