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@springbootapplication(exclude = {datasourceautoconfiguration.class})
@enablediscoveryclient
public class gulimallgatewayapplication {
    public static void main(string[] args) {
        springapplication.run(gulimallgatewayapplication.class, args);
    }
}

spring.application.name=glmall-gateway
spring.cloud.nacos.discovery.server-addr=192.168.11.1:8848
server.port=88

spring.application.name=glmall-coupon
spring.cloud.nacos.config.server-addr=192.168.11.1:8848
spring.cloud.nacos.config.namespace=a791fa0e-cef8-47ee-8f07-5ac5a63ea061

spring:
    application:
        name: glmall-gateway

spring:
  cloud:
    gateway:
      routes:
        - id: baidu_route
          uri: http://www.baidu.com
          predicates:
            - query=url,baidu

        - id: test_route
          uri: http://www.qq.com
          predicates:
            - query=url,qq

会员服务（member）调优惠券（coupon）服务
会员服务通过openfeign先去注册中心找优惠券服务

@requestmapping("coupon/coupon")
public class couponcontroller {
    @autowired
    private couponservice couponservice;
    @requestmapping("/member/list")
    public r membercoupons(){    //全系统的所有返回都返回r
        // 应该去数据库查用户对于的优惠券，但这个我们简化了，不去数据库查了，构造了一个优惠券给他返回
        couponentity couponentity = new couponentity();
        couponentity.setcouponname("满100减10");//优惠券的名字
        return r.ok().put("coupons",arrays.aslist(couponentity));
    }

package com.yxj.gulimall.member;
import org.mybatis.spring.annotation.mapperscan;
import org.springframework.boot.springapplication;
import org.springframework.boot.autoconfigure.springbootapplication;
import org.springframework.cloud.client.discovery.enablediscoveryclient;
import org.springframework.cloud.openfeign.enablefeignclients;
@springbootapplication
@mapperscan("com.yxj.gulimall.member.dao")
@enablediscoveryclient
@enablefeignclients(basepackages="com.yxj.gulimall.member.feign")
public class gulimallmemberapplication {
    public static void main(string[] args) {
        springapplication.run(gulimallmemberapplication.class, args);
    }
}

package com.yxj.gulimall.member.feign;
import com.yxj.common.utils.r;
import org.springframework.cloud.openfeign.feignclient;
import org.springframework.web.bind.annotation.requestmapping;
@feignclient("gulimall-coupon") //告诉spring cloud这个接口是一个远程客户端，要调用coupon服务，再去调用coupon服务/coupon/coupon/member/list对应的方法
public interface couponfeignservice {
    @requestmapping("/coupon/coupon/member/list") 
    public r membercoupons();//得到一个r对象
}

@restcontroller
@requestmapping("member/member")
public class membercontroller {
    @autowired
    private memberservice memberservice;
    @autowired
    couponfeignservice couponfeignservice;
    @requestmapping("/coupons")
    public r test(){
        memberentity memberentity = new memberentity();
        memberentity.setnickname("张三");
        r membercoupons = couponfeignservice.membercoupons(); //假设张三去数据库查了后返回了张三的优惠券信息
        // 打印会员和优惠券信息
        return r.ok().put("member",memberentity).put("coupons",membercoupons.get("coupons"));
    }

http://localhost:8000/member/member/coupons
{"msg":"success","code":0,"coupons":[{"id":null,"coupontype":null,"couponimg":null,"couponname":"满100减10","num":null,"amount":null,"perlimit":null,"minpoint":null,"starttime":null,"endtime":null,"usetype":null,"note":null,"publishcount":null,"usecount":null,"receivecount":null,"enablestarttime":null,"enableendtime":null,"code":null,"memberlevel":null,"publish":null}],"member":{"id":null,"levelid":null,"username":null,"password":null,"nickname":"张三","mobile":null,"email":null,"header":null,"gender":null,"birth":null,"city":null,"job":null,"sign":null,"sourcetype":null,"integration":null,"growth":null,"status":null,"createtime":null}}

public class r extends hashmap {
    public static r ok() {
        return new r();
    }
    public r put(string key, object value) {
        super.put(key, value);
        return this;
    }
}