HttpUtils.sendPost()方法，参数无需拼接参数到url,否则会出现双份参数

请求url或form参数 会出现双份参数,并无法获取
{"token":["xxxxxxx","xxxxxxx"],"payType":["weixin","weixin"],"amount":["100","100"],"orderId":["123","123"]}

@@ -118,7 +118,7 @@ public class HttpUtils
         StringBuilder result = new StringBuilder();
         try
         {
-            String urlNameString = url + "?" + param;
+            String urlNameString = url;
             log.info("sendPost - {}", urlNameString);
             URL realUrl = new URL(urlNameString);
             URLConnection conn = realUrl.openConnection();