Feign远程调用丢失请求头问题

1、feign远程调用导致请求头丢失问题#

 

如何解决？

加上feign远程调用的请求拦截器

 

/**
 * @author houChen
 * @date 2022/2/3 17:20
 * @Description:  谷粒商城feign请求的相关配置
 */
@Configuration
public class GuliFeignConfig {

    @Bean("requestInterceptor")
    public RequestInterceptor requestInterceptor(){
        return new RequestInterceptor(){

            @Override
            public void apply(RequestTemplate template) {
                //1、RequestContextHolder拿到刚进来的请求
                ServletRequestAttributes requestAttributes = (ServletRequestAttributes)RequestContextHolder.getRequestAttributes();
                HttpServletRequest request = requestAttributes.getRequest(); //老请求
                //2、同步请求头数据 cookie
                String cookie = request.getHeader("cookie");
                template.header("cookie",cookie);
            }
        };
    }
}

 

 

2、异步Feign调用丢失请求头问题#

在一个请求的执行过程中，如果有一个新的异步请求出来执行别的任务，那么在该新的请求中是拿不到老的请求的

上下文环境的。

 

可以在新的上下文环境中将老的上下文环境赋值过去

@Override
public OrderConfirmVo confirmOrder() throws ExecutionException, InterruptedException {
    OrderConfirmVo orderConfirmVo = new OrderConfirmVo();
    MemberRespVo memberRespVo = LoginUserInterceptor.loginUser.get();
    RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
    CompletableFuture<Void> completableFuture1 = CompletableFuture.runAsync(()->{
        //解决异步feign请求丢失请求头问题
        RequestContextHolder.setRequestAttributes(requestAttributes);
        //1、远程查询所有的收货地址列表
        List<MemberAddressVo> address = memberFeignService.getAddress(memberRespVo.getId());
        orderConfirmVo.setAddress(address);
    }, executor);

    CompletableFuture<Void> completableFuture2 = CompletableFuture.runAsync(() -> {
        RequestContextHolder.setRequestAttributes(requestAttributes);
        //2、远程查询购物车所有选中的购物项
        List<OrderItemVo> currentUserCartItems = cartFeignService.getCurrentUserCartItems();
        orderConfirmVo.setItems(currentUserCartItems);
    }, executor);

    CompletableFuture.allOf(completableFuture1,completableFuture2).get();
    //3、查询用户积分
    Integer integration = memberRespVo.getIntegration();
    orderConfirmVo.setIntegration(integration);
    //4、其他数据自动计算

    //5、todo 防订单重复提交令牌
    return orderConfirmVo;
}