申明式web服务客户端 Feign配置ribbon与hystrix

feign配置ribbon

全局配置

直接实用ribbon.<key>=<value>

如 ribbon.ConnectTimeout=500

ribbon.ReadTimeout=5000

指定服务配置

实用 <服务名>.ribbon.<key>=<value>

hello-service.ribbon.ConnectTimeout=500

hello-service.ribbon.ReadTimeout=5000

版本 spring boot 1.5.14

feign配置hystrix

具体详细代码 请参考 申明式web服务客户端 Feign 基本使用

服务降级配置：

helloService 接口

package springcloud.helloserviceapi; import org.springframework.web.bind.annotation.*; @RequestMapping("helloController") public interface HelloService { @RequestMapping(value = "/hello",method = RequestMethod.GET) String hello(); @RequestMapping(value = "/hello1",method = RequestMethod.GET) String hello(@RequestParam("name") String name); @RequestMapping(value = "/hello2",method = RequestMethod.GET) User hello(@RequestHeader("name") String name, @RequestHeader("age") Integer age); /* @RequestMapping(value = "/hello3",method = RequestMethod.POST) String hello(@RequestBody User user);*/ }

调整feign接口

package springcloud.feign; import org.springframework.cloud.netflix.feign.FeignClient; import org.springframework.web.bind.annotation.*; import springcloud.helloserviceapi.HelloService; import springcloud.helloserviceapi.User; @FeignClient(name = "hello-service",fallback = HelloServiceFallback.class) public interface HelloServiceExtends extends HelloService{ }

添加 fallback接口 注意 @RequestMapping 必须要更 HelloService 的不一样，否则会冲突 @RequestMapping("fallback/helloController")

package springcloud.feign; import feign.hystrix.FallbackFactory; import org.springframework.stereotype.Component; import org.springframework.web.bind.annotation.*; import springcloud.helloserviceapi.HelloService; import springcloud.helloserviceapi.User; @Component @RequestMapping("fallback/helloController") public class HelloServiceFallback implements HelloServiceExtends{ @Override public String hello() { return "error"; } @Override public String hello(String name) { return null; } @Override public User hello(String name, Integer age) { return null; } }

结果：

请求压缩

spring cloud feign 支持对请求与响应进行GZIP，以减少通信过程中的性能损耗。我们只需要通过

下面两个参数设置，就能开启请求与响应的压缩功能

feign.compression.request.enabled=true

feign.compression.response.enabled=true

feign 的属性类

@ConfigurationProperties("feign.compression.request")

public class FeignClientEncodingProperties

参考 :

小马哥 spring cloud 视频

spring cloud微服务实战(程序员DD)