Feign调用服务各种坑的处理方案

@RefreshScope
@RestController
public class XXXController extends BaseController implements IndicatorsFeignapi{
	@Resource
	private XXXService xxx;
	@Override
	public Wrapper<CommonVo> getXXXX(@RequestBody CommonDto commonDto) {
		try {
			CommonVo vo = xxx.getdata(commonDto);
			return WrapMapper.ok(vo);
		}catch(Exception e) {
			e.printStackTrace();
			return WrapMapper.error("系统异常,请联系管理员!");
		}
	}
}
//Service不进行展示，注意参数传递至service层时要加入注解@RequestBody等才能获取参数

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

@FeignClient(value = "被调用服务名")
public interface IndicatorsFeignApi {
 
 @PostMapping(value = "/api/getXXXX",consumes="application/JSON", headers = {"Accept=application/json", "Content-Type=application/json"})
 Wrapper<CommonVo> getXXXX(@RequestBody CommonDto commonDto); 
}

@Component
public class IndicatorsFeignApiHystrix implements IndicatorsFeignApi {
 @Override
 public Wrapper<CommonVo> getXXXX(CommonDto commonDto) {
  System.out.println("=====调用服务获数据发生异常======");
  return null;
 }
}

feign:
  hystrix:
    enabled: true

//serviceImp层
   @Autowired
 private IndicatorsFeignApi api;//声明调用api
 
 @Override
 public CommonVo getXXX(CommonDto commonDto) {
  Wrapper<CommonVo> result =   api.getXXXX(commonDto);//服务调用
  if(result!=null) {
   return result.getResult();
  }else {
   return new CommonVo();
  }
 }