spring cloud gateway (Greenwich.SR2): how to route a request to a controller of itself ?

Question

spring cloud gateway (Greenwich.SR2): how to route a request to a controller of itself ?

I write several controller http api to maintain the gateway configuration data in mysql. I write the Decryption/Encryption logic for the request/response in the Filters.
I wanna implement like this:
r.path("/gateway/**").uri( itself );
such as http://ip:port/gateway/addServiceInfo will route to the api of this/current instance:

MaintainController{
   @PostMapping("addServiceInfo")
   addServiceInfo(){
      //do something
   }
}```

Answer 1

https://blog.csdn.net/weixin_43577800/article/details/99720257