zuul转发后服务取不到请求路径的解决

    @GetMapping("/a")
    public String a(HttpServletRequest request) {
        StringBuilder result = new StringBuilder();
        result.append("getMethod:" + request.getMethod() + "\n\r");
        result.append("getRequestURL:" + request.getRequestURL() + "\n\r");
        result.append("getServletPath:" + request.getServletPath() + "\n\r");
        result.append("getContextPath:" + request.getContextPath() + "\n\r");
        result.append("getPathInfo:" + request.getPathInfo() + "\n\r");
        result.append("---------------------------------------------------" + "\n\r");
        Enumeration<String> es = request.getHeaderNames();
        while (es.hasMoreElements()) {
            result.append(es.nextElement() + ":" + request.getHeader(es.nextElement()) + "\n\r");
        }
        return result.toString();
    }

server:
  port: 8180
spring:
  application:
    name: zuul-test
zuul:
  routes:
    hello:
      path: /hello/**
      url: http://localhost:9180/

server:
  port: 8180
spring:
  application:
    name: zuul-test
zuul:
  routes:
    hello:
      path: /hello/**
      url: http://localhost:9180/hello

String uri = this.helper.buildZuulRequestURI(request);

buildHttpRequest(verb, uri, entity, headers, params,request);