Json產生與解析

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JSON常用與伺服器進行資料互動，JSON中“{}”表示JSONObject，“[]”表示JSONArray

如下json資料：

1  {"singers":[2 {"id":"02","name":"tom","gender":"男","tel":["123456","789012"]},3 {"id":"03","name":"jerry","gender":"男","tel":["899999","666666"]},4 {"id":"04","name":"jim","gender":"男","tel":["7777","5555"]},{"id":"05","name":"lily","gender":"女","tel":["222222","111111"]}5 ]}

 

產生json資料代碼：

 1 public String buildJson() throws JSONException { 2  3         JSONObject persons = new JSONObject(); 4  5         JSONArray personArr = new JSONArray(); 6  7         JSONObject person = new JSONObject(); 8         person.put("id", "02"); 9         person.put("name", "tom");10         person.put("gender", "男");11 12         JSONArray tel = new JSONArray();13         tel.put("123456");14         tel.put("789012");15 16         person.put("tel", tel);17 18         personArr.put(person);19 20         JSONObject person2 = new JSONObject();21         person2.put("id", "03");22         person2.put("name", "jerry");23         person2.put("gender", "男");24 25         JSONArray tel2 = new JSONArray();26         tel2.put("899999");27         tel2.put("666666");28 29         person2.put("tel", tel2);30 31         personArr.put(person2);32 33 34         JSONObject person3 = new JSONObject();35         person3.put("id", "04");36         person3.put("name", "jim");37         person3.put("gender", "男");38 39         JSONArray tel3 = new JSONArray();40         tel3.put("7777");41         tel3.put("5555");42 43         person3.put("tel", tel3);44 45         personArr.put(person3);46 47 48         JSONObject person4 = new JSONObject();49         person4.put("id", "05");50         person4.put("name", "lily");51         person4.put("gender", "女");52 53         JSONArray tel4 = new JSONArray();54         tel4.put("222222");55         tel4.put("111111");56 57         person4.put("tel", tel4);58 59         personArr.put(person4);60 61 62         persons.put("singers", personArr);63 64 65         return persons.toString();66     }

 

解析json資料代碼：

 1  private void parseJsonMulti(String strResult) { 2         try { 3             JSONArray jsonObjs = new JSONObject(strResult).getJSONArray("singers"); 4             String s = ""; 5  6             for (int i = 0; i < jsonObjs.length(); i++) { 7                 JSONObject jsonObj = ((JSONObject) jsonObjs.opt(i)); 8                 int id = jsonObj.getInt("id"); 9                 String name = jsonObj.getString("name");10                 String gender = jsonObj.getString("gender");11                 s += "ID號" + id + ", 姓名：" + name + ",性別：" + gender + "，電話：";12                 JSONArray tel = jsonObj.getJSONArray("tel");13                 for (int j = 0; j < tel.length(); j++) {14 15                     s += tel.getString(j)+"/";16                 }17 18                 s += "\n";19 20             }21             tv.setText(s);22         } catch (JSONException e) {23             e.printStackTrace();24         }25     }

 

Json產生與解析