标签：ica 修改 png sof img aqs 指定 type 中心
因为feign已经依赖了hystrix，所以可以直接使用，无需添加再次添加依赖。
1、使用@FeignClient注解中的fallback属性指定回调类
package com.daqsoft; import org.springframework.cloud.netflix.feign.FeignClient; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; /** * @Description Created by liaoxx on 2017-6-12. */ @FeignClient(value = "compute-service", fallback = ComputeClientHystrix.class) public interface ComputerClient { @RequestMapping(method = RequestMethod.GET, value = "/add") Integer add(@RequestParam(value = "a") Integer a, @RequestParam(value = "b") Integer b); }
2、创建回调类ComputeClientHystrix，实现@FeignClient的接口，此时实现的方法就是对应@FeignClient接口中映射的fallback函数
package com.daqsoft; import org.springframework.stereotype.Component; import org.springframework.web.bind.annotation.RequestParam; /** * @Description Created by liaoxx on 2017-6-13. */ @Component public class ComputeClientHystrix implements ComputerClient { @Override public Integer add(@RequestParam(value = "a") Integer a, @RequestParam(value = "b") Integer b) { return -1; } }
3、web调用
package com.daqsoft; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; /** * @Description Created by liaoxx on 2017-6-12. */ @RestController public class CustomController { @Autowired private ComputerClient computerClient; @RequestMapping(value = "/add", method = RequestMethod.GET) public Integer add(){ return computerClient.add(10,20); } }
4、启动服务，访问http://localhost:3333/add
报错，无法进入回调
5、修改配置文件，添加属性
spring.application.name=ribbon-consumer server.port=3333 #服务注册中心地址 eureka.client.serviceUrl.defaultZone=http://localhost:1111/eureka/
#开启hystrix支持 feign.hystrix.enabled=true
6、再次启动服务，访问http://localhost:3333/add （正常访问回调方法）
标签：ica 修改 png sof img aqs 指定 type 中心
原文地址：http://www.cnblogs.com/liao-xx/p/6999899.html
