Supplement to the scheme of gateway+nacos+knife4j (swagger)

Want to put Knife4j Integrated into the gateway The method in , You can find many things on the Internet . I'll sort it out here , The method is roughly ：

1. Spring Cloud Gateway Integrate Knife4j

however , Maybe you will have a problem , Namely doc When the page opens , You can see the corresponding microservice group , however , But I can't see the interface list .

That's because , Your microservice documentation , Is in /v2/apis-doc In the route .
and gateway Of nacos Configure forwarding , It is equipped with such interception and forwarding

-   id: sys_route
    uri: lb://cloud-sys
    predicates:
        - Path=/api/sys/**

It will lead to microservices sys_route The final request of the document splicing is /api/sys/v2/apis-doc

The solution is , Use gateway Of filters To configure

-   id: sys_route
    uri: lb://cloud-sys
    predicates:
        - Path=/api/sys/**
    filters:
        - RewritePath=/api/sys/v2/api-docs, /v2/api-docs

( First contact filters Of , Recommend taking another look StripPrefix attribute )

PS：Knife4j The authorities have also recently issued Knife4jAggregation Microservice version , You can deploy the microservice directly （ But you need to start an extra microservice , Memory is tight ...）.