1. First download Tomcat from the official website https://tomcat.apache.org/download-90.cgi
2. After the download is complete, use xftp to upload to /opt under Linux
3. Unzip in Linux
tar -xvzf apache-tomcat-8.5.35.tar.gz 
4. The executable file of tomcat is in the bin directory
5. Start tomcat
6. Turn off the firewall
7, close tomcat
