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Json的生成與解析
JSON常用與服務器進行數據交互，JSON中“{}”表示JSONObject，“[]”表示JSONArray
如下json數據：
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 ]}
生成json數據代碼：
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數據代碼：
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號" + id + ", 姓名：" + name + ",性別：" + gender + "，電話："; 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(); } }
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