openFeign

 

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###################  spring cloud openFeign #########################################<!--openfeign--><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-openfeign</artifactId></dependency>server:port: 80spring:application:name: cloud-consumer-openfeign-ordercloud:consul:host: localhostport: 8500discovery:prefer-ip-address: true #优先使用服务ip进行注册service-name: ${spring.application.name}@SpringBootApplication
@EnableDiscoveryClient //该注解用于向使用consul为注册中心时注册服务
@EnableFeignClients//启用feign客户端,定义服务+绑定接口，以声明式的方法优雅而简单的实现服务调用
@FeignClient(value = "cloud-payment-service")
public interface PayFeignApi
{@PostMapping(value = "/pay/add")public ResultData addPay(@RequestBody PayDTO payDTO);@GetMapping(value = "/pay/get/{id}")public ResultData getPayInfo(@PathVariable("id") Integer id);@GetMapping(value = "/pay/get/info")public String mylb();
}http://localhost/feign/pay/get/1
http://localhost/feign/pay/all
http://localhost/feign/pay/add
{"payNo": "payString1","orderNo": "abcasdf","userId": "1","amount" : "9.99"
}
http://localhost/feign/pay/del/1
http://localhost/feign/pay/update
{"id":"3","payNo": "payUpdate","orderNo": "updateNo11111","userId": "3","amount" : "9.99"
}
http://localhost/feign/pay/get/mylb

openFeign默认集成了loadbalancer超时控制
openFeign默认超时时间60秒。
spring:cloud:openfeign:client:config:default:connectTimeout: 5000readTimeout: 5000loggerLevel: basic重试机制
openFeign默认重试机制是关闭的。
@Configuration
public class FeignConfig
{@Beanpublic Retryer myRetryer(){//最大请求次数为3(1+2)，初始间隔时间为100ms，重试间最大间隔时间为1sreturn new Retryer.Default(100,1,3);}
}默认httpclient修改<!-- httpclient5--><dependency><groupId>org.apache.httpcomponents.client5</groupId><artifactId>httpclient5</artifactId><version>5.3</version></dependency><!-- feign-hc5--><dependency><groupId>io.github.openfeign</groupId><artifactId>feign-hc5</artifactId><version>13.1</version></dependency>spring:cloud:openfeign:httpclient:hc5:enabled: true请求响应压缩
spring:cloud:openfeign:compression:request:enabled: truemin-request-size: 2048 #最小触发压缩的大小mime-types: text/xml,application/xml,application/json #触发压缩数据类型response:enabled: true# 开启circuitbreaker和分组激活 spring.cloud.openfeign.circuitbreaker.enabled日志打印功能
@Configuration
public class FeignConfig
{@BeanLogger.Level feignLoggerLevel() {return Logger.Level.FULL;}
}# feign日志以什么级别监控哪个接口
logging:level:com:ye:apis:PayFeignApi: debug----------------------------------------------------------------------------------------