Feign 微服務之間調用認證攔截器

 配置request中 的header往微服務傳遞 

public class FeignClientInterceptor implements RequestInterceptor {
    @Override
    public void apply(RequestTemplate requestTemplate) {
        ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        if(requestAttributes!=null){
            HttpServletRequest request = requestAttributes.getRequest();
            //取出當前請求的header，找到jwt令牌
            Enumeration<String> headerNames = request.getHeaderNames();
            if(headerNames!=null){
                while (headerNames.hasMoreElements()){
                    String headerName = headerNames.nextElement();
                    String headerValue = request.getHeader(headerName);
                    // 將header向下傳遞
                    requestTemplate.header(headerName,headerValue);

                }
            }
        }

    }
}

調用方啓動類 注入bena 

    @Bean
    public FeignClientInterceptor getFeignClientInterceptor(){
        return new FeignClientInterceptor();
    }