SpringBoot整合OpenFeign案例

一、相关依赖

<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>

二、全局配置

server:
  port: 80
spring:
  application:
    name: cloud-order-service

eureka:
  client:
    #表示是否将自己注册进Eureka Server 默认为true
    register-with-eureka: true
    #是否从Eureka Server抓取已有的注册信息，默认为true。单节点无所谓。集群必须设置为true才能配合ribbon使用负载均衡
    fetch-registry: true
    service-url:
      defaultZone: http://eureka7001.com:7001/eureka/,http://eureka7002.com:7002/eureka/

#设置Feign客户端连接超时时间(openFeign默认支持ribbon)
ribbon:
  #指的是建立连接所用时间，使用于网络状态正常情况下，两端连接所用时间
  ReadTimeout: 5000
  #指的是建立连接后从服务器读取到可用资源所用的时间
  ConnectTimeout: 5000

logging:
  level:
    #feign 日志以什么级别监控哪个接口
    com.zhq.springcloud.feign.*: debug

三、启动类开启Feign配置@EnableFeignClients

@EnableFeignClients
@SpringBootApplication
public class OrderFeignMain80 {
    public static void main(String[] args) {
        SpringApplication.run(OrderFeignMain80.class,args);
    }
}

四、Feign客户端案例代码

@Component
@FeignClient(value = "CLOUD-PAYMENT-SERVICE")
@RequestMapping("/payment")
public interface PaymentFeignService {

    @PostMapping("/create")
    CommonResult<Integer> create(@RequestBody Payment payment);

    @GetMapping("/getById/{id}")
    CommonResult<Payment> getById(@PathVariable("id") Long id);

    @GetMapping("/feign/timeout")
     String paymentFeignTimeout();
}