Fastjson toJSONString用單引號進行轉換

String str = '[{"sourceItemId":"5548696","itemTitle":"服務商測試商品不發貨","itemCount":"1","itemCountMax":""},{"sourceItemId":"554314455","itemTitle":"測試店鋪不發貨","itemCount":"1","itemCountMax":""}]';
JSONArray _list_item_ids_update = JSON.parseArray(request.getParameter("_list_item_ids"));
JSON.toJSONString(_list_item_ids_update,SerializerFeature.UseSingleQuotes);