Reference materials:
https://www.cnblogs.com/aaron911/p/11006493.html
Detailed explanation of server.xml configuration in tomcat
This blog starts from the theory and basic elements. The explanation is very detailed and worthy of reference.
https://blog.csdn.net/qq_31957747/article/details/53729530 The
meaning of tomcat configuration file server.xml
This article explains the configuration one by one corresponding to the order of the server.xml file in the conf, which is worthy of reference.