Android中的JSONObject和JSONArray解析json数据

今天介绍一下关于json数据解析,我们使用Android中的JSONObject和JSONArray解析json数据,有android开发的朋友可以参考一下.

1. String strJson = "{"students":[{"name":"Jack","age":12}, {"name":"Vista","age":23}, {"name":"Kaka","age":22}, {"name":"Hony","age":31}]}"; 
2.         try { 
3.             JSONObject jo = new JSONObject(strJson); 
4.             JSONArray jsonArray = (JSONArray) jo.get("students"); 
5.             for (int i = 0; i < jsonArray.length(); ++i) { 
6.                 JSONObject o = (JSONObject) jsonArray.get(i); 
7.                 System.out.println("name:" + o.getString("name") + "," + "age:" 
8.                         + o.getInt("age")); 
9.             } 
10.         } catch (JSONException e) { 
11.             e.printStackTrace(); 
12.         } 
13.  
14.  
15.  
16. 2.使用gson中的JsonReader解析json数据 
17.  
18. try { 
19.             String string = "{"class":1, "students":[{"name":"jack", "age":21},{"name":"kaka", "age":21},{"name":"lucy", "age":21}]}"; 
20.             StringReader sr = new StringReader(string); 
21.             JsonReader jr = new JsonReader(sr); 
22.             jr.beginObject(); 
23.             if (jr.nextName().contains("class")) { 
24.                 System.out.println("班级: " + jr.nextString()); 
25.                 if (jr.nextName().equals("students")) { 
26.                     jr.beginArray(); 
27.                     while (jr.hasNext()) { 
28.                         jr.beginObject(); 
29.                         if (jr.nextName().equals("name")) 
30.                             System.out.print("姓名：" + jr.nextString()); 
31.                         if (jr.nextName().equals("age")) { 
32.                             System.out.println(" , 年龄：" + jr.nextInt()); 
33.                         } 
34.                         jr.endObject(); 
35.                     } 
36.                     jr.endArray(); 
37.                 } 
38.             } 
39.             jr.endObject(); 
40.         } catch (FileNotFoundException e) { 
41.             // TODO Auto-generated catch block 
42.             e.printStackTrace(); 
43.         } catch (IOException e) { 
44.             // TODO Auto-generated catch block 
45.             e.printStackTrace(); 
46.         } 

Json解析库gson:http://code.google.com/p/google-gson/