如何安装tomcat？

1、安装jdk
2、创建java超链接 ln -s /usr/local/java1.8 /usr/local/java
3、 导入环境变量
vi /etc/profile
JAVA_HOME=/usr/local/java
PATH=$JAVA_HOME/bin:$PATH
export JAVA_HOME PATH
CATALINA_HOME=/usr/local/tomcat
export CATALINA_HOME

4、tomcat 开机启动
在/usr/lib/systemd/system目录下增加tomcat9文件，内容如下：

[Unit]

Description=Tomcat

After=syslog.target network.target remote-fs.target nss-lookup.target

[Service]

Type=oneshot

ExecStart=/usr/local/tomcat/tomcat9/bin/startup.sh

ExecStop=/usr/local/tomcat/tomcat9/bin/shutdown.sh

ExecReload=/bin/kill -s HUP $MAINPID

RemainAfterExit=yes

[Install]

WantedBy=multi-user.target