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json、map互转

首先,json转map

方法一:

Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation().create();
Gson gson = new Gson();
 
String strjson  例如:
strjson  = { "ret":0, "msg":"", "nickname":"xxx", "figureurl":"http://qzapp.qlogo.cn/qzapp/100226195/C399C7B2880641627CED3EEF9DEB8E30/30", "figureurl_1":"http://qzapp.qlogo.cn/qzapp/100226195/C399C7B2880641627CED3EEF9DEB8E30/50", "figureurl_2":"http://qzapp.qlogo.cn/qzapp/100226195/C399C7B2880641627CED3EEF9DEB8E30/100", "gender":"xxx", "vip":"0", "level":"0", "is_yellow_year_vip":"0" }
 
Map infoMap = gson.fromJson(strjson, new TypeToken<Map<String, String>>(){}.getType());
 
方法二:
 

JSONObject jsonObject = new JSONObject(s);

Map<String,Object> map= new HashMap<String,Object>();
Iterator it = jsonObject.keys();
// 遍历jsonObject数据,添加到Map对象
while (it.hasNext())
{
String key = String.valueOf(it.next());
String value = http://www.mamicode.com/(String) jsonObject.get(key);
map.put(key, value);
}

return map;

 

方法三:

JSONObject jasonObject = JSONObject.fromObject(str);
Map<String, Object> map2 = (Map) jasonObject;

但此方法可能不适用, 百度的,出过问题,做个记录。

 

map转json

JSONObject jsonObject = JSONObject.fromMap(map); 

 

关于jsonArray,留个示例:

 public CarDataResultList<CarIntroEntity> parserJson(String paramString) throws Car273Exception {        try {                         JSONObject jsonObj = new JSONObject(paramString);            if (jsonObj.has("total")) {                defCarIntroList.total = jsonObj.getInt("total");            }            if (jsonObj.has("info")) {                JSONArray infoArray = jsonObj.getJSONArray("info");                for (int i = 0; i < infoArray.length(); i++) {                    CarIntroEntity carIntroEntity = new CarIntroEntity();                    JSONObject json = infoArray.getJSONObject(i);                    if (json.has("id")) {                        carIntroEntity.setId(json.getString("id"));                    }
.
.
.

defCarIntroList.infoList.add(carIntroEntity); } }} catch (JSONException e) { throw ce; }

 

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json、map互转