java怎么读取json格式的数据,再在前端表现出来,做网页游戏开发的,急用啊,谢谢!
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达令说
TA贡献1821条经验 获得超6个赞
/** * * @param result JSON字符串 * @param name JSON数组名称 * @param fields JSON字符串所包含的字段 * @return 返回List<Map<String,Object>>类型的列表,Map<String,Object>对应于 "id":"1"的结构 */ public static List<Map<String, Object>> convertJSON2List(String result, String name, String[] fields) { List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); try { JSONArray array = new JSONObject(result).getJSONArray(name); for (int i = 0; i < array.length(); i++) { JSONObject object = (JSONObject) array.opt(i); Map<String, Object> map = new HashMap<String, Object>(); for (String str : fields) { map.put(str, object.get(str)); } list.add(map); } } catch (JSONException e) { Log.e("error", e.getMessage()); } return list; }
白板的微信
TA贡献1883条经验 获得超3个赞
做过的一些json数据解析 几种常用的json数据格式解析
public static Person getPerson(String key,String jsonString){ Person person = new Person(); try { JSONObject jsonObject = new JSONObject(jsonString); JSONObject personObject = jsonObject.getJSONObject("person"); person.setId(personObject.getInt("id")); person.setName(personObject.getString("name")); person.setAddress(personObject.getString("address")); } catch (Exception e) { // TODO: handle exception } return person; } public static List<Person> getPersons(String key,String jsonString){ List<Person> list = new ArrayList<Person>(); try { JSONObject jsonObject = new JSONObject(jsonString); //返回json数组 JSONArray jsonArray = jsonObject.getJSONArray(key); for (int i = 0; i < jsonArray.length(); i++) { JSONObject jsonObject2 = jsonArray.getJSONObject(i); Person person = new Person(); person.setId(jsonObject2.getInt("id")); person.setName(jsonObject2.getString("name")); person.setAddress(jsonObject2.getString("address")); list.add(person); } } catch (Exception e) { // TODO: handle exception } return list; } public static List<String> getList(String key,String jsonString){ List<String> list = new ArrayList<String>(); try { JSONObject jsonObject = new JSONObject(jsonString); JSONArray jsonArray = jsonObject.getJSONArray(key); for (int i = 0; i < jsonArray.length(); i++) { String msg = jsonArray.getString(i); list.add(msg); } } catch (Exception e) { // TODO: handle exception } return list; } public static List<Map<String, Object>> getListMap(String key,String jsonString){ List<Map<String, Object>> list = new ArrayList<Map<String,Object>>(); try { JSONObject jsonObject = new JSONObject(jsonString); JSONArray jsonArray = jsonObject.getJSONArray(key); for (int i = 0; i < jsonArray.length(); i++) { JSONObject jsonObject2 = jsonArray.getJSONObject(i); Map<String, Object> map = new HashMap<String, Object>(); Iterator<String> iterator = jsonObject2.keys(); while (iterator.hasNext()) { String json_key = iterator.next(); Object json_value = jsonObject2.get(json_key); if (json_value == null) { json_value = ""; } map.put(json_key, json_value); } list.add(map); } } catch (Exception e) { // TODO: handle exception } return list; }
qq_花开花谢_0
TA贡献1835条经验 获得超7个赞
如果有用Struts框架那就好办了,struts.xml里配置继承json-defual,一般Struts包都有,在action下个方法,一样的返回结果 struts.xml中
<result name="返回字符串" type="json"> <param name="includeProperties">传出去的值,传出去的值,...</param> </result>
页面异步刷新的写法
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