JSON格式传输数据 - Blacksky

JSON数据格式

[{id:56,title:"xxxxx",timelength:90},{id:16,title:"xbbx",timelength:20}]

 1     /**
 2      * 获取最新的视频资讯
 3      * @return
 4      * @throws Exception
 5      */
 6     public static List<News> getJSONLastNews() throws Exception{
 7 
 8         String path = "http://192.168.0.168:8080/web/ListServlet?format=json";
 9         URL url = new URL(path);
10         HttpURLConnection conn = (HttpURLConnection) url.openConnection();
11         conn.setConnectTimeout(5000);
12         conn.setRequestMethod("GET");
13         if(conn.getResponseCode() == 200){
14             InputStream inStream = conn.getInputStream();
15             return parseJSON(inStream);
16         }
17         return null;
18     }
19     /**
20      * 解析JSON数据
21      * @param inStream
22      * @return
23      */
24     private static List<News> parseJSON(InputStream inStream) throws Exception{
25 
26         List<News> newses = new ArrayList<News>();
27         byte[] data = StreamTool.read(inStream);
28         String json = new String(data);
29         JSONArray array = new JSONArray(json);
30 
31         for(int i = 0 ; i < array.length() ; i++){
32 
33             JSONObject jsonObject = array.getJSONObject(i);
34             News news = new News(jsonObject.getInt("id"), jsonObject.getString("title"), jsonObject.getInt("timelength"));
35             newses.add(news);
36         }
37         return newses;
38     }

 1 public class StreamTool {
 2     /**
 3      * 读取输入流数据
 4      * @param inStream
 5      * @return
 6      */
 7     public static byte[] read(InputStream inStream) throws Exception{
 8 
 9         ByteArrayOutputStream outStream = new ByteArrayOutputStream();
10         byte[] buffer = new byte[1024];
11         int len = 0;
12         while( (len = inStream.read(buffer)) != -1 ){
13             outStream.write(buffer, 0, len);
14         }
15         inStream.close();
16         return outStream.toByteArray();
17     }
18 
19 }

Json生成

　　public static void main(String[] args)
	{
		
		  try
		{
			String json = "{\"name\":\"reiz\"}";
			  JSONObject jsonObj = new JSONObject(json);
			  String name = jsonObj.getString("name");

			  jsonObj.put("initial", name.substring(0, 1).toUpperCase());

			  Map<String, String> ingredients = new HashMap<String, String>();
			  ingredients.put("apples", "3kg");
			  ingredients.put("sugar", "1kg");
			  ingredients.put("pastry", "2.4kg");
			  ingredients.put("bestEaten", "outdoors");
			  jsonObj.put("ingredients", ingredients);
			  System.out.println(jsonObj);
		}
		catch (JSONException e)
		{
			e.printStackTrace();
		}

//		  {"ingredients":{"apples":"3kg","pastry":"2.4kg","bestEaten":"outdoors","sugar":"1kg"},
//			  "initial":"R",
//			  "name":"reiz"}


	
		
	}

 1 JSON示例
 2 {
 3     "name" : "微博开放平台",
 4     "domain" : "openapi",
 5     "geo_enabled" : true,
 6     "followers_count" : 13247,
 7     "statuses_count" : 158,
 8     "favourites_count" : 0,
 9     "city" : "8",
10     "description" : "新浪微博开放平台市场推广官方账号，如有技术问题，请@微博API或者发私信给微博API",
11     "verified" : true,
12     "status" : 
13     {
14         "created_at" : "Mon Nov 29 16:08:43 +0800 2010",
15         "text" : "各位开发者，我们的论坛上线啦~http://sinaurl.cn/h4FWc7 欢迎大家的参与~另外，关于技术相关的问题，可以在论坛上提出，也可以@微博API 这个官方技术支持账号哦~感谢大家对开放平台的支持~[呵呵]",
16         "truncated" : false,
17         "in_reply_to_status_id" : "",
18         "in_reply_to_screen_name" : "",
19         "geo" : null,
20         "favorited" : false,
21         "in_reply_to_user_id" : "",
22         "id" : 3958728723,
23         "source" : "<a href=\"http://t.sina.com.cn\" rel=\"nofollow\">新浪微博</a>"
24     },
25     "id" : 11051,
26     "gender" : "m",
27     "friends_count" : 5,
28     "screen_name" : "微博开放平台",
29     "allow_all_act_msg" : true,
30 
31 }
32 
33 
34 
35 JSONObject jsonObject = new JSONObject(json);
36 String name = jsonObject.getString("name");
37 JSONObject statusObject =jsonObject.getJSONObject("status");
38 String create = statusObject.getString("created_at");

posted on 2012-09-02 20:16 Blacksky 阅读(873) 评论(0) 收藏举报

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