Json数据
[{"code":"110000","sheng":"11","di":"00","xian":"00","name":"北京市","level":1},
{"code":"659004","sheng":"65","di":"90","xian":"04","name":"五家渠市","level":3},
{"code":"710000","sheng":"71","di":"00","xian":"00","name":"台湾省","level":1},
{"code":"810000","sheng":"81","di":"00","xian":"00","name":"香港特别行政区","level":1},
{"code":"820000","sheng":"82","di":"00","xian":"00","name":"澳门特别行政区","level":1}]
这里附上一个检查json数据格式是否正确的网站http://www.json.cn/
三种解析方式android自带解析,Gson解析,FastJson解析
1、android自带解析
json_btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String s = getString(); Log.d("txt",s); Listlist = new ArrayList (); try { JSONArray obj = new JSONArray(s); for(int i=0;i ){ JSONObject jsonobj = (JSONObject)obj.get(i); City city = new City(); city.setCode(jsonobj.getString("code")); city.setSheng(jsonobj.optString("sheng")); city.setDi(jsonobj.optString("di")); city.setXian(jsonobj.optString("xian")); city.setName(jsonobj.optString("name")); city.setLevel(jsonobj.optInt("level")); Log.d("txt",city.toString()); textView.append(city.toString()); } } catch (JSONException e) { e.printStackTrace(); } } });
先获取JSON数组,在解析JsonObject。
2、Gson解析
Gson_btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String s = getString(); JsonParser parser = new JsonParser(); JsonArray jsonArray = parser.parse(s).getAsJsonArray(); Gson gson = new Gson(); for (JsonElement obj:jsonArray){ City city = gson.fromJson(obj,City.class); Log.d("txt", city.toString()); textView.append(city.toString()); } } });
这样也可以
Gson_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String s = getString();
City[] lists = new Gson().fromJson(s, City[].class);
for(City city:lists){
Log.d("txt",city.toString());
}
}
});
这样也可以
son_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String s = getString();
Listlists = new ArrayList ();
Type type = new TypeToken>(){}.getType();
Gson gson = new Gson();
lists = gson.fromJson(s,type);
for(City city:lists){
Log.d("txt",city.toString());
}
}
});
先获取Json数组,再解析jsonObject。
3、FastJson
fastjson_btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String s = getString(); Log.d("txt",s); Listlists = JSON.parseArray(s,City.class); for(City city:lists){ textView.append(city.toString()); Log.d("txt",city.toString()); } } });
直接获取JsonArray解析List
public static final Object parse(String text); // 把JSON文本parse为JSONObject或者JSONArray
public static final JSONObject parseObject(String text); // 把JSON文本parse成JSONObject
public static final
public static final JSONArray parseArray(String text); // 把JSON文本parse成JSONArray
public static final
public static final String toJSONString(Object object); // 将JavaBean序列化为JSON文本
public static final String toJSONString(Object object, boolean prettyFormat); // 将JavaBean序列化为带格式的JSON文本
public static final Object toJSON(Object javaObject); 将JavaBean转换为JSONObject或者JSONArray(和上面方法的区别是返回值是不一样的)
三种解析方法,个人感觉fastjson使用起来还是很方便的。