springcloud netflix 之学习Feign(3)

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Feign学习

作用：实现接口访问数据的负载均衡

配置

pom.xml

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

client
1.FeignConfig

@Configuration
public class FeignConfig {
    @Bean
//    当远程调用失败会进行重试
    public Retryer feignRetryer(){
        return new Retryer.Default(100,SECONDS.toMillis(1),5);
    }
}

2.EurekaClientFeign(配置访问的client和FeignConfig)

@FeignClient(value = "eureka-client",configuration = FeignConfig.class)
public interface EurekaClientFeign {

    @GetMapping("/hi")
    public String sayHiFromClientEureka(@RequestParam(value = "name") String name);

}

启动类
注解@EnableFeignClients