解决Spring Cloud Feign 请求时附带请求头的问题

/**
 * feign 配置文件
 * 将请求头中的参数，全部作为 feign 请求头参数传递
 * @author: linjinp
 * @create: 2020-06-28 09:54
 **/
@Configuration
public class FeignConfiguration implements RequestInterceptor {
  @Override
  public void apply(RequestTemplate requestTemplate) {
    HttpServletRequest request = SpringContextUtils.getHttpServletRequest();
    Enumeration<String> headerNames = request.getHeaderNames();
    if (headerNames != null) {
      while (headerNames.hasMoreElements()) {
        String name = headerNames.nextElement();
        String values = request.getHeader(name);
        requestTemplate.header(name, values);
      }
    }
  }
}

@FeignClient(name = "admin", contextId = "factoryPlmseriesRelation", configuration = FeignConfiguration.class)
//@FeignClient(name = "admin2", contextId = "factoryPlmseriesRelation", url = "http://127.0.0.1:8582/", configuration = FeignConfiguration.class)
public interface FeignFactoryPlmseriesRelationService {

  /**
   * 根据当前用户，获取工厂与PLM关联关系
   * @return
   */
  @GetMapping(value = "/factoryPlmseriesRelation/getFactoryPlmseriesRelation")
  ErrorMsg<List<FactoryPlmseriesRelationVo>> getFactoryPlmseriesRelation();

}

# ribbon 配置
ribbon:
 OkToRetryOnAllOperations: false #对所有操作请求都进行重试,默认false
 ReadTimeout: 5000  #负载均衡超时时间，默认值5000
 ConnectTimeout: 5000 #ribbon请求连接的超时时间，默认值2000
 MaxAutoRetries: 0   #对当前实例的重试次数，默认0
 MaxAutoRetriesNextServer: 1 #对切换实例的重试次数，默认1
# hystrix 配置
hystrix:
 command:
  default: #default全局有效，service id指定应用有效
   execution:
    timeout:
     #是否开启超时熔断
     enabled: true
    isolation:
     thread:
      timeoutInMilliseconds: 10000 #断路器超时时间，默认1000ms
     # hystrix 隔离模式改为信号量模式，feign 才能获取到父线程中的请求头
     strategy: SEMAPHORE
     # 允许的并发量，默认值为 10
     semaphore:
      maxConcurrentRequests: 100