Simple use of Feign

Create Project A: Eureka Project as Service Discovery and Registry

Add annotations to the main class: @EnableEurekaServer as a service discovery and registration center service

Create project B: service-provider as interface service provider

Add an annotation to the main class: @EnableDiscoveryClient finds the registry service and registers its own service

Configuration file: 1. Add the project name; 2. Add the address of the Eureka registry

Create project C: service-consumer interface consumer

Add an annotation to the main class: @EnableDiscoveryClient finds the registry service and registers its own service

@EnableFeignClients declared as feign clients

Configuration file: 1. Add the project name; 2. Add the address of the Eureka registry

Define a feign interface, which is the interface of service-provider

Introducing this feign interface into project C, calling the method of this feign interface directly can be equivalent to calling the local method, calling the method of service B: service-provider