JSON解析小总结

转载：http://blog.csdn.net/u011480946/article/details/53470421

数据格式： {“name”:”zhangsanfeng”,”age”:3,”sex”:”nv”}

protected User readJsonObject(String jsonData) {

// 内置解析方法JSONObject
User bean = null;
try {
JSONObject jsonObject = new JSONObject(jsonData);

String xname = jsonObject.getString("name");
int xage = jsonObject.getInt("age");
String xsex = jsonObject.getString("sex");

bean = new User(xname, xage, xsex);
} catch (Exception e) {
e.printStackTrace();
}
return bean;
}

JSON格式：

[

{“name”:”zhangsanfeng”,”age”:3,”sex”:”nv”},

{“name”:”zhaobenshan”,”age”:2,”sex”:”renyao”}

]

protected List<User> readJsonArray(String jsonData) {
// 内置解析方法JSONObject
List<User> users = new ArrayList<User>();
try {
JSONArray jsonArray = new JSONArray(jsonData);

for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);

String xname = jsonObject.getString("name");
int xage = jsonObject.getInt("age");
String xsex = jsonObject.getString("sex");

User user = new User(xname, xage, xsex);

users.add(user);
}

} catch (Exception e) {
e.printStackTrace();
}
return users;
}

JSON格式:

{

“error_code”: 0,

“reason”: “查询成功!”,

“result”: {

“future”: [

{

“date”: “20140804”,

“temperature”: “28℃~36℃”,

“weather”: “晴转多云”,

“weather_id”: {

“fa”: “00”,

“fb”: “01”

},

“week”: “星期一”,

“wind”: “南风3-4级”

},

{

“date”: “20140805”,

“temperature”: “28℃~36℃”,

“weather”: “晴转多云”,

“weather_id”: {

“fa”: “00”,

“fb”: “01”

},

“week”: “星期二”,

“wind”: “东南风3-4级”

},

{

“date”: “20140806”,

“temperature”: “27℃~35℃”,

“weather”: “晴转多云”,

“weather_id”: {

“fa”: “00”,

“fb”: “01”

},

“week”: “星期三”,

“wind”: “东南风3-4级”

},

{

“date”: “20140807”,

“temperature”: “27℃~34℃”,

“weather”: “多云”,

“weather_id”: {

“fa”: “01”,

“fb”: “01”

},

“week”: “星期四”,

“wind”: “东南风3-4级”

},

“resultcode”: “200”

}

protected List<Future> readJsonObjArr(String jsonData) {
// 内置解析方法JSONObject
List<Future> futures = new ArrayList<Future>();
try {
JSONObject jsonObject = new JSONObject(jsonData);

JSONObject result = jsonObject.getJSONObject("result");

JSONArray jsonArray = result.getJSONArray("future");

for (int i = 0; i < jsonArray.length(); i++) {
JSONObject future = jsonArray.getJSONObject(i);
String xdate = future.getString("date");
String xtemperature = future.getString("temperature");
String xweather = future.getString("weather");
String xweek = future.getString("week");
String xwind = future.getString("wind");

Future f = new Future(xdate, xtemperature, xweather, xweek, xwind);

futures.add(f);
}

} catch (Exception e) {
e.printStackTrace();
}
return futures;
}

JSON格式：

{

“cookie”: {

“originalMaxAge”: null,

“expires”: null,

“secure”: false,

“httpOnly”: true,

“path”: “/”

},

“user”: {

“integralLevel”: 4,

“integral”: “309.2”,

“integralLimit”: “500”,

“level”: “3”,

“email”: null,

“headSmallPic”: null,

“headMediumPic”: null,

“mobile”: “13402082180”,

“name”: “shlt”,

“nickname”: “shlt”,

“passId”: “7328058863216”,

“uSessionId”: “UDnid0000001517405981291BcxMw2YRFpN33Tc5OdgT78N7qqFeZbFu”,

“uid”: “13289164”,

“platinum”: 0,

“crbt”: 1,

“crbtMonthly”: 1,

“vrbt”: 0,

“miguTotal”: “227”,

“rechargeUrl”: null,

“musician”: 0,

“vipInterest”: {

“opened”: [{

“id”: 3,

“purviewName”: “xe5xbdxa9xe9x93x83xe5x8cx85xe6x9cx88”,

“purviewDepict”: “xe9xabx98xe6xb8x85xe5xbdxa9xe9x93x83xe5x85x8dxe8xb4xb9xe8xaexa2xe8xb4xadrn| DIYxe5xbdxa9xe9x93x83xe5x85x8dxe8xb4xb9xe4xbdxbfxe7x94xa8”,

“hasOpened”: 1

}],

“noOpened”: [{

“id”: 2,

“purviewName”: “xe7x99xbdxe9x87x91xe4xbcx9axe5x91x98”,

“purviewDepic
4000
t”: “xe9xabx98xe6xb8x85xe3x80x81xe6x97xa0xe6x8dx9fxe6xadx8cxe6x9bxb2xe5x85x8dxe8xb4xb9xe4xb8x8bxe8xbdxbdrn| xe8xb6x85xe6xb8x85MVxe5x85x8dxe8xb4xb9xe8xa7x82xe7x9cx8brn|xe4xb8x93xe4xbaxabxe7x9bxb4xe6x92xadxe5x9cxbaxe6xacxa1xe3x80x81xe7x9bxb4xe6x92xadxe7x89xb9xe6x9dx83rn| xe7xa5xa8xe5x8axa1xe5x8dxa1xe3x80x81xe5x92xaaxe5x92x95xe5x88xb8xe5x85x8dxe8xb4xb9xe9xa2x86rn| xe7x9bxb4xe6x92xadxe4xbaxabxe5x85xa8xe7xa8x8bxe6x97xa0xe5xb9xbfxe5x91x8arn| xe7x9bxb4xe6x92xadxe4xbaxabxe5xbcxb9xe5xb9x95xe7x89xb9xe6x95x88”,

“hasOpened”: 0

}]

}

}

}

解析得到json中uSessionId的值：

if (StringUtils.isNotBlank(json)) {
JSONObject jsonObject = JSON.parseObject(json);
String user = jsonObject.getString("user");
if (StringUtils.isNotBlank(user)) {
JSONObject jsonUser = JSON.parseObject(user);
if (jsonUser != null) {
String uSessionId = jsonUser.getString("uSessionId");
}
} catch (Exception e) {
logger.error("定时统计同步贡献值积分到用户中心任务执行异常, obj=" + miguReportActivity);
continue;
}
}
}
}
}

用工具对JSON解析

1，对象

protected User readJsonObject(String jsonData) {
// 内置解析方法JSONObject,ctrl+k
User bean = null;
bean = JsonUtil.parseJsonToBean(jsonData, User.class);
return bean;
}

2，数组

users = (List<User>) JsonUtil.parseJsonToList(jsonData, new TypeToken<List<User>>(){}.getType());

3，综合

protected List<Future> readJsonObjArr(String jsonData) {
// 内置解析方法JSONObject
List<Future> futures = new ArrayList<Future>();

String result = JsonUtil.getFieldValue(jsonData, "result");

String future = JsonUtil.getFieldValue(result, "future");

JSONArray jsonArray;
try {
jsonArray = new JSONArray(future);
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);

String xdate = jsonObject.getString("date");
String xtemperature = jsonObject.getString("temperature");
String xweather = jsonObject.getString("weather");
String xweek = jsonObject.getString("week");
String xwind = jsonObject.getString("wind");

Future f = new Future(xdate, xtemperature, xweather, xweek, xwind);

futures.add(f);

}
} catch (Exception e) {

e.printStackTrace();
}

return futures;
}