Spring Cloud Feign 调用微服务传递header请求头

package com.chitic.module.core.config;

import feign.RequestInterceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.util.Enumeration;

 
@Configuration
public class FeignConfig {

    @Bean
    public RequestInterceptor headerInterceptor() {
        return template -> {
            ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
            if (null != attributes) {
                HttpServletRequest request = attributes.getRequest();
                Enumeration<String> headerNames = request.getHeaderNames();
                if (headerNames != null) {
                    while (headerNames.hasMoreElements()) {
                        String name = headerNames.nextElement();
                        String values = request.getHeader(name);
                        template.header(name, values);
                    }
                }
            }
        };
    }

}

需注意，feign调用时不能调用含有HttpServletResponse参数（比如常用的数据导出），以下就不能远程调用，目前没找到解决办法