解析JSONArray
问题描述:
解析JSONArray解析JSONArray
{
"SyncUserGpsDataList" :
[
{
"date_time": "2013-03-23 16:34:53PLUS0530",
"Battery": {
"Level": "51",
"State": "Not charging",
"Temperature": "3.78",
"Voltage": "30.6",
"Health": "Good"
},
"Location": {},
"GPS_bool": "true",
"WIFI_bool": "true",
"notes": "Trying to get location information"
}
]
}
如何解析这个JSONArray?
答
Json.org对理解JSON以及各种语言的库列表有很好的解释和教程。
这是值得一看,并选择一个最适合您的需求。从你的问题来看,你已经尝试了什么或者你打算如何使用它,这是一个不清楚的问题,所以或许需要进一步的研究。
答
有一些库,使它相当无痛。我最近使用json.jar,你可以从sourceforge下载它。在Java文档是在json.org
张贴这里是一个小的代码,让你开始:
public static void main(String[] args) throws Exception {
File json = new File("json.txt"); //stores your sample data.
Scanner in = new Scanner(json);
JSONObject obj = new JSONObject(in.nextLine());
JSONArray list = obj.getJSONArray("SyncUserGpsDataList");
System.out.print("Number of elements in this array: ");
System.out.println(list.length());
JSONObject data = list.getJSONObject(0);
System.out.println("Need to parse:" + data.toString());
System.out.println("\n Keys : Values");
Iterator itr =data.keys();
//List key-value pairs stored in the JSON object.
while(itr.hasNext()) {
String key = itr.next().toString();
System.out.print(key + " : ");
System.out.println(data.get(key));
}
}