spring cloud feign 調用微服務轉發不了request請求頭和參數問題解決方案

spring cloud feign 調用微服務轉發不了request請求頭和參數問題解決方案

問題:開發中發現feign調用的微服務獲取不到參數,查看文檔吧一天終於扒到了解決方案;原理:爲feign添加攔截,修改默認config,爲feign請求添加原request的請求頭以及參數!
相關代碼如下:

代碼塊

@Configuration
public class FeignConfiguration {
    private Logger logger = LoggerFactory.getLogger(FeignConfiguration.class);

    @Bean
    public RequestInterceptor requestInterceptor() {
        return new RequestInterceptor() {
            @Override
            public void apply(RequestTemplate template) {
                ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder
                        .getRequestAttributes();
                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);
                    }
                }
                Enumeration<String> bodyNames = request.getParameterNames();
                StringBuffer body =new StringBuffer();
                if (bodyNames != null) {
                    while (bodyNames.hasMoreElements()) {
                        String name = bodyNames.nextElement();
                        String values = request.getParameter(name);
                        body.append(name).append("=").append(values).append("&");
                    }
                }
                if(body.length()!=0) {
                    body.deleteCharAt(body.length()-1);
                    template.body(body.toString());
                    logger.info("feign interceptor body:{}",body.toString());
                }
            }
        };
    } 
}