spring cloud zuul修改请求url的方法

demo:
 ribbon:
 NIWSServerListClassName: com.netflix.loadbalancer.ConfigurationBasedServerList
 listOfServers: 192.168.99.100,192.168.99.101
zuul:
 routes:
 demo:
  path: /demo/**
  stripPrefix: true
  serviceId: demo

@Component
public class UrlPathFilter extends ZuulFilter{

 @Override
 public String filterType() {
  return FilterConstants.PRE_TYPE;
 }

 @Override
 public int filterOrder() {
  return FilterConstants.PRE_DECORATION_FILTER_ORDER + 1;
 }

 @Override
 public boolean shouldFilter() {
  final String serviceId = (String) RequestContext.getCurrentContext().get("proxy");
  return "demo".equals(serviceId);
 }

 @Override
 public Object run() {
  RequestContext context = RequestContext.getCurrentContext();
  Object originalRequestPath = context.get(FilterConstants.REQUEST_URI_KEY);
  //http://localhost:10000/demo/list/data
  //-->/api/prefix/list/data
  String modifiedRequestPath = "/api/prefix" + originalRequestPath;
  context.put(FilterConstants.REQUEST_URI_KEY, modifiedRequestPath);
  return null;
 }
}