解析json抛出null对象

JSON INPUT（我已剪切并粘贴它，以便可能在括号中有一些错误）。解析json抛出null对象

{"results":{"quote":[{"date":"2010-03-10","Date":"2010-03-10","Open":"16.51","High":"16.94","Low":"16.51","Close":"16.79","Volume":"33088600","Adj_Close":"16.79"}, 
{"date":"2010-03-09","Date":"2010-03-09","Open":"16.41","High":"16.72","Low":"16.40","Close":"16.53","Volume":"20755200","Adj_Close":"16.53"}, 
{"date":"2010-03-08","Date":"2010-03-08","Open":"16.32","High":"16.61","Low":"16.30","Close":"16.52","Volume":"30554000","Adj_Close":"16.52"}, 
{"date":"2010-03-05","Date":"2010-03-05","Open":"15.89","High":"16.38","Low":"15.89","Close":"16.06","Volume":"21415000","Adj_Close":"16.06"}, 
{"date":"2010-03-04","Date":"2010-03-04","Open":"15.55","High":"15.85","Low":"15.52","Close":"15.81","Volume":"22906000","Adj_Close":"}]}

Java代码

System.out.println(inputLine1); 
      JSONObject json = (JSONObject) JSONSerializer.toJSON(inputLine1); 
      JSONObject pilot = json.getJSONObject("results");   

      JSONArray jsonMainArr = pilot.getJSONArray("quote"); 

      for (int i = 0; i < jsonMainArr.size(); i++) 
      { // **line 2** 
       JSONObject childJSONObject = jsonMainArr.getJSONObject(i); 
       String date = childJSONObject.getString("date"); 
       String Date=childJSONObject.getString("Date"); 
       String Open=childJSONObject.getString("Open"); 
       String Close=childJSONObject.getString("Close"); 
       String High=childJSONObject.getString("High"); 
       String low=childJSONObject.getString("Low"); 
       String Volume=childJSONObject.getString("Volume"); 
       String Adj_close=childJSONObject.getString("Adj_Close"); 

       System.out.println(date); 
       System.out.println(Open); 


      }

它说，空对象。我究竟做错了什么。

来源

2012-03-30 user1092042

1）什么是确切的例外，哪一行 2）确保您的json输入格式正确 – I82Much 2012-03-30 06:20:05

您的JSON字符串末尾缺少'''，请更正。 – Subodh 2012-03-30 06:20:18

是的，JSON格式错误。尝试将其粘贴到jsonlint.com并确保其验证。我已修改它以使其生效 - http://pastebin.com/W9rkAi7k – I82Much 2012-03-30 06:22:46

JSON不正确。最后"未关闭：

{"results":{"quote":[..., {..., "Adj_Close":"}]}

这将导致它不可能解析值quote，使图书馆的回报null当您预期的数组。

来源

2012-03-30 06:21:44 Joni

它仍然表示空对象 – user1092042 2012-03-30 07:01:59

解析json抛出null对象

回答

相关问题