修改

Scripts/gandartHelper.js

@@ -317,7 +317,7 @@ function objToUrlParams(param, key, encode) {
     let paramStr = urlEncode(param, key, encode);
     let len = paramStr.length;
     if(len > 0){
-        paramStr = paramStr.substring(1,len-1);
+        paramStr = paramStr.substring(1,len);
     }
     return paramStr;
 }