文章目录
- 配置
- 使用
- 其他设置
-
- 超时设置
- [YML开启OpenFeign客户端超时控制(Ribbon Timeout)](#YML开启OpenFeign客户端超时控制(Ribbon Timeout))
- OpenFeign日志打印功能
配置
maven
xml
<dependencies>
<!--openfeign-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
</dependencies>
启动类添加
激活Feign
java
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.openfeign.EnableFeignClients;
@SpringBootApplication
@EnableFeignClients //激活OpenFeign
public class OrderFeignMain80
{
public static void main(String[] args) {
SpringApplication.run(OrderFeignMain80.class, args);
}
}
yml
这里用的是eureka,nacos参考nacos相关配置
yml
server:
port: 80
eureka:
client:
register-with-eureka: false
service-url:
defaultZone: http://eureka7001.com:7001/eureka/,http://eureka7002.com:7002/eureka/
使用
添加Feign服务
java
@Component
@FeignClient(value = "CLOUD-PAYMENT-SERVICE")
public interface PaymentFeignService
{
@GetMapping(value = "/payment/get/{id}")
public CommonResult<Payment> getPaymentById(@PathVariable("id") Long id);
@GetMapping(value = "/payment/feign/timeout")
public String paymentFeignTimeout();
}
Controller
调用PaymentFeignService,之后通过Feign调用相关服务
java
@RestController
@Slf4j
public class OrderFeignController
{
@Resource
private PaymentFeignService paymentFeignService;
@GetMapping(value = "/consumer/payment/get/{id}")
public CommonResult<Payment> getPaymentById(@PathVariable("id") Long id)
{
return paymentFeignService.getPaymentById(id);
}
@GetMapping(value = "/consumer/payment/feign/timeout")
public String paymentFeignTimeout()
{
// OpenFeign客户端一般默认等待1秒钟
return paymentFeignService.paymentFeignTimeout();
}
}
其他设置
超时设置
OpenFeign默认等待1秒钟,超过后报错
OpenFeign默认支持Ribbon
YML开启OpenFeign客户端超时控制(Ribbon Timeout)
yml
server:
port: 80
eureka:
client:
register-with-eureka: false
service-url:
defaultZone: http://eureka7001.com:7001/eureka/,http://eureka7002.com:7002/eureka/
#设置feign客户端超时时间(OpenFeign默认支持ribbon)
ribbon:
#指的是建立连接所用的时间,适用于网络状况正常的情况下,两端连接所用的时间
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
OpenFeign日志打印功能
对Feign接口的调用情况进行监控和输出
日志级别
- NONE:默认的,不显示任何日志;
- BASIC:仅记录请求方法、URL、响应状态码及执行时间;
- HEADERS:除了 BASIC 中定义的信息之外,还有请求和响应的头信息;
- FULL:除了 HEADERS 中定义的信息之外,还有请求和响应的正文及元数据。
java
import feign.Logger;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class FeignConfig
{
@Bean
Logger.Level feignLoggerLevel()
{
// 此处修改日志级别
return Logger.Level.FULL;
}
}
YML开启日志
yml
logging:
level:
# feign日志以什么级别监控哪个接口
com.atguigu.springcloud.service.PaymentFeignService: debug