Json生成与解析

JSON常用与服务器进行数据交互，JSON中“{}”表示JSONObject，“[]”表示JSONArray

如下json数据：

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

生成json数据代码：

 public String buildJson() throws JSONException {

         JSONObject persons = new JSONObject();

         JSONArray personArr = new JSONArray();

         JSONObject person = new JSONObject();
         person.put("id", "02");
         person.put("name", "tom");
         person.put("gender", "男");

         JSONArray tel = new JSONArray();
         tel.put("123456");
         tel.put("789012");

         person.put("tel", tel);

         personArr.put(person);

         JSONObject person2 = new JSONObject();
         person2.put("id", "03");
         person2.put("name", "jerry");
         person2.put("gender", "男");

         JSONArray tel2 = new JSONArray();
         tel2.put("899999");
         tel2.put("666666");

         person2.put("tel", tel2);

         personArr.put(person2);

         JSONObject person3 = new JSONObject();
         person3.put("id", "04");
         person3.put("name", "jim");
         person3.put("gender", "男");

         JSONArray tel3 = new JSONArray();
         tel3.put("7777");
         tel3.put("5555");

         person3.put("tel", tel3);

         personArr.put(person3);

         JSONObject person4 = new JSONObject();
         person4.put("id", "05");
         person4.put("name", "lily");
         person4.put("gender", "女");

         JSONArray tel4 = new JSONArray();
         tel4.put("222222");
         tel4.put("111111");

         person4.put("tel", tel4);

         personArr.put(person4);

         persons.put("singers", personArr);

         return persons.toString();
     }

解析json数据代码：

  private void parseJsonMulti(String strResult) {
         try {
             JSONArray jsonObjs = new JSONObject(strResult).getJSONArray("singers");
             String s = "";

             for (int i = 0; i < jsonObjs.length(); i++) {
                 JSONObject jsonObj = ((JSONObject) jsonObjs.opt(i));
                 int id = jsonObj.getInt("id");
                 String name = jsonObj.getString("name");
                 String gender = jsonObj.getString("gender");
                 s += "ID号" + id + ", 姓名：" + name + ",性别：" + gender + "，电话：";
                 JSONArray tel = jsonObj.getJSONArray("tel");
                 for (int j = 0; j < tel.length(); j++) {

                     s += tel.getString(j)+"/";
                 }

                 s += "\n";

             }
             tv.setText(s);
         } catch (JSONException e) {
             e.printStackTrace();
         }
     }