1、同postman调用controller接口差不多，url指定为：服务地址+@FeignClient中的path+具体方法名

@FeignClient(name = "saas-test-server", contextId = "ITestFeignApi", path = "${saas.feign.context-path:}/saas/api/test/")
public interface ITestFeignApi {


    @PostMapping("/add")
    void add(@RequestBody AddDTO addDTO);


}