Java 如何将 JSONObjects 转换为 JSONArray？
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How to convert JSONObjects to JSONArray?
提问by NickUnuchek
I have a response like this:
我有这样的回应：
{
"songs":{
"2562862600":{"id":"2562862600""pos":1},
"2562862620":{"id":"2562862620""pos":1},
"2562862604":{"id":"2562862604""pos":1},
"2573433638":{"id":"2573433638""pos":1}
}
}
Here is my code:
这是我的代码：
List<NameValuePair> param = new ArrayList<NameValuePair>();
JSONObject json = jParser.makeHttpRequest(url, "GET", param);
JSONObject songs= json.getJSONObject("songs");
How do I convert "songs"to a JSONArray?
如何转换"songs"为 JSONArray？
采纳答案by nikis
Something like this:
像这样的东西：
JSONObject songs= json.getJSONObject("songs");
Iterator x = songs.keys();
JSONArray jsonArray = new JSONArray();
while (x.hasNext()){
String key = (String) x.next();
jsonArray.put(songs.get(key));
}
回答by user3467480
Your response should be something like this to be qualified as Json Array.
你的响应应该是这样的才能被称为 Json Array。
{
"songs":[
{"2562862600": {"id":"2562862600", "pos":1}},
{"2562862620": {"id":"2562862620", "pos":1}},
{"2562862604": {"id":"2562862604", "pos":1}},
{"2573433638": {"id":"2573433638", "pos":1}}
]
}
You can parse your response as follows
您可以按如下方式解析您的回复
String resp = ...//String output from your source
JSONObject ob = new JSONObject(resp);
JSONArray arr = ob.getJSONArray("songs");
for(int i=0; i<arr.length(); i++){
JSONObject o = arr.getJSONObject(i);
System.out.println(o);
}
回答by NickUnuchek
To deserialize the response need to use HashMap:
要反序列化需要使用的响应HashMap：
String resp = ...//String output from your source
Gson gson = new GsonBuilder().create();
gson.fromJson(resp,TheResponse.class);
class TheResponse{
HashMap<String,Song> songs;
}
class Song{
String id;
String pos;
}
回答by plexus
Even shorter and with json-functions:
甚至更短，并带有 json 函数：
JSONObject songsObject = json.getJSONObject("songs");
JSONArray songsArray = songsObject.toJSONArray(songsObject.names());
