springCloud-Feign 拦截器使用，传递header中的值

小哇666

已于 2024-07-26 18:02:59 修改

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于 2024-04-14 19:43:21 首次发布

本文链接：https://blog.youkuaiyun.com/qq_41712271/article/details/137752433

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场景：服务A 调用服务B

1 服务A 编写拦载器类

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import javax.servlet.http.HttpServletRequest;


public class Interceptor_a implements RequestInterceptor {
    @Override
    public void apply(RequestTemplate template) {
        System.err.println("拦截器");
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();

        template.header("code",request.getHeader("code"));
    }
}

2 服务A 使用拦截器，两种方法，选一种即可