Supplement 3: SpringMVC working principle

 

 

 

 

 

 

What is the handler execution chain in Spring?

The handler execution chain in Spring is a responsibility chain design pattern composed of handler mapping and handler interceptor (in short, who will handle it, what should be done before and after processing) . The processor mapper is used to match the current request with its dedicated controller. Interceptors are used to call objects before and after some scheduling actions (such as controller parsing, view rendering, etc.).

https://muyinchen.github.io/2017/08/28/Spring5%E6%BA%90%E7%A0%81%E8%A7%A3%E6%9E%90-Spring%20Web%E4%B8%AD%E7%9A%84%E5%A4%84%E7%90%86%E7%A8%8B%E5%BA%8F%E6%89%A7%E8%A1%8C%E9%93%BE/