spring cloud zuul增加header传输的操作

@Component
public class KeyUserFilter extends ZuulFilter {
    private static final Logger logger = LoggerFactory.getLogger(KeyUserFilter.class);
    @Override
    public Object run() {
        // TODO Auto-generated method stub
        String keyCloakUser = CurrentUser.getInstance().getCurrentAuditor();
        String keyCloakUserName = CurrentUser.getInstance().getCurrentAuditorName();
        String nickname = CurrentUser.getInstance().getCurrentNickname();
        RequestContext requestContext = RequestContext.getCurrentContext();
        HttpServletRequest req = (HttpServletRequest)RequestContext.getCurrentContext().getRequest();
        requestContext.addZuulRequestHeader("authorization", req.getHeader("authorization"));
        return null;
    }
    
    @Override
    public boolean shouldFilter() {
        // TODO Auto-generated method stub
        return true; //表示是否需要执行该filter，true表示执行，false表示不执行
    }
    @Override
    public int filterOrder() {
        // TODO Auto-generated method stub
        return 0;
    }
    @Override
    public String filterType() {
        // TODO Auto-generated method stub
        return "pre"; //定义filter的类型，有pre、route、post、error四种
    }
}

    public static void  setReqParams()  {
        RequestContext ctx = RequestContext.getCurrentContext();
        HttpServletRequest request = ctx.getRequest();
        // 一定要get一下,下面这行代码才能取到值... [注1]
        request.getParameterMap();
        Map<String, List<String>> requestQueryParams = ctx.getRequestQueryParams();
        if (requestQueryParams==null) {
            requestQueryParams=new HashMap<>();
        }
        //将要新增的参数添加进去,被调用的微服务可以直接 去取,就想普通的一样,框架会直接注入进去
        ArrayList<String> arrayList = new ArrayList<>();
        arrayList.add("1");
        requestQueryParams.put("test", arrayList);
        ctx.setRequestQueryParams(requestQueryParams);
    }

ctx.setRequestQueryParams(requestQueryParams);

ServletInputStream inputStream = request.getInputStream();
String copyToString = StreamUtils.copyToString(inputStream, Charset.forName(“UTF-8”));

RequestContext ctx = RequestContext.getCurrentContext();  
ctx.addZuulRequestHeader("original_requestURL",request.getRequestURL().toString());

request.getHeader("original_requestURL")