SpringBoot如何使用feign实现远程接口调用和错误熔断

    1.8
    Greenwich.SR1
  


    
      org.springframework.cloud
      spring-cloud-starter-openfeign
    
    
    
      org.springframework.cloud
      spring-cloud-starter-netflix-hystrix
    


    
      
        org.springframework.cloud
        spring-cloud-dependencies
        ${spring-cloud.version}
        pom
        import
      
    
  

package com.mybatis.plus.web.client;

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;

@FeignClient(name="demo",url="${conf.address.demo}",fallbackFactory=DemoFeignClientFB.class)
public interface DemoFeignClient {
  
  @RequestMapping("cmpOclOrder/demoFeign")
  public String testFeign();

}

package com.mybatis.plus.web.client;

import feign.hystrix.FallbackFactory;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.stereotype.Component;

@Component
public class DemoFeignClientFB implements FallbackFactory {
  private static Log logger = LogFactory.getLog(DemoFeignClientFB.class);

  @Override
  public DemoFeignClient create(Throwable throwable) {
    return new DemoFeignClient() {
      @Override
      public String testFeign() {
        return "demo系统接口调用失败";
      }
    };
  }
}