spring cloud Feign 微服务服务之间调用传递token

问题：

微服务调用需要验证token，而且token放在header里

解决：

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 FeignConfig implements RequestInterceptor {
    @Override
    public void apply(RequestTemplate requestTemplate) {
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        //添加token
        requestTemplate.header("token", request.getHeader("token"));
    }
}

调用：@FeignClient(value = "demo-service", configuration = FeignConfig.class)

@Component
@FeignClient(value = "demo-service", configuration = FeignConfig.class)
@RequestMapping( method = {RequestMethod.GET, RequestMethod.POST})
public interface TestClient {  

    @GetMapping(value = "/demo/version")
    String version();
}

​