The process by which Tomcat server processes an HTTP request

Suppose the request from the customer is:

http://localhost:8080/wsota/wsota_index.jsp

1) The request is sent to the native port 8080, where the Coyote http/1.1 connector that is listening is obtained
2) connector the request to the engine of the service it is working on and waits for a response from the engine
3) The engine obtains the request localhost/wsota/wsota_index.jsp, matches all the virtual host hosts it owns
4) The engine matches the host named localhost (even if it does not match the request to the host processing, because the host is defined as the engine's default host)
5) localhost host gets the request/wsota/wsota_index.jsp, matching all the context it owns
6) host matches to the context where the path is/wsota (if the match is not matched, the request is given to the context of the path named "" to process)
7) path= "/wsota" The context gets the request/wsota_index.jsp, in its mapping table to find the corresponding servlet
8) context matches to a servlet with a URL pattern of *.jsp, corresponding to the Jspservlet class
9) constructs the HttpServletRequest object and the HttpServletResponse object, calling Jspservlet's Doget or Dopost method as a parameter
) context returns the HttpServletResponse object to host after it has finished executing
) host returns the HttpServletResponse object to the engine
) engine returns the HttpServletResponse object to connector
Connector return the HttpServletResponse object to the customer browser

Original address: http://yut-i.blog.163.com/blog/static/2425778220121159347221/

The process by which Tomcat server processes an HTTP request