springcloud(二) - 服务调用Feign&openFeign

功能介绍：动态代理的方式，简化请求其他服务的开发成本，更好得对请求地址组装、接受返回信息、返回参数解析等

Feign和OpenFeign区别:

OpenFeign实现了Feign的基础功能，同时支持springmvc的注解，比如@RequestMapping

功能实现

<!--openfeign依赖-->

<dependency>

    <groupId>org.springframework.cloud</groupId>

    <artifactId>spring-cloud-starter-openfeign</artifactId>

</dependency>

# application.yml

eureka:

  client:

    register-with-eureka: false

    service-url:

      defaultZone: http://eureka7001.com:7001/eureka/,http://eureka7002.com:7002/eureka/

//启动类

@SpringBootApplication

@EnableFeignClients

public class OrderFeignMain80 {

    public static void main(String[] args) {

        SpringApplication.run(OrderFeignMain80.class, args);

    }

}

//可以调用EUREKA-SUPPORT服务下面多个接口

@Configuration
@FeignClient(value = "EUREKA-SUPPORT")
public interface ISupportService {

    @GetMapping("/support/say")
    String say(@PathVariable("msg") int msg);

}

openFeign还可以配置日志打印、自定义拦截器和超时时间设置

比如：connectTimeout连接超时，readTimeout读取超时

参考地址： https://blog.csdn.net/qq_41539088/article/details/127681581

巴特西

springcloud(二) - 服务调用Feign&openFeign

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