principle:
The client sends the request to the springcloud gateway, and the springcloud gateway finds the route matching the request through the gateway Handler Mapping, and then sends it to the gateway web Handler, and the gateway web handler forwards the request to the actual service node through the specified filter chain, and executes The business logic returns the response result. If a filter is configured, the data can be intercepted and processed before the request is forwarded to the server and before the response is sent to the client. Application scenarios: parameter verification, authority verification, traffic monitoring, log output
(personal use)
Attach a learning address: https://www.cnblogs.com/crazymakercircle/p/11704077.html