Android中使用Gson解析JSON数据

String jsonData = "[{\"username\":\"arthinking\",\"userId\":001},{\"username\":\"Jason\",\"userId\":002}]";
try{
	JsonReader reader = new JsonReader(new StringReader(jsonData));
	reader.beginArray();
	while(reader.hasNext()){
		reader.beginObject();
		while(reader.hasNext()){
			String tagName = reader.nextName();
			if(tagName.equals("username")){
				System.out.println(reader.nextString());
			}
			else if(tagName.equals("userId")){
				System.out.println(reader.nextString());
			}
		}
		reader.endObject();
	}
	reader.endArray();
}
catch(Exception e){
	e.printStackTrace();
}

public class User {
	private String username ;
	private int userId ;
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public int getUserId() {
		return userId;
	}
	public void setUserId(int userId) {
		this.userId = userId;
	}
}

Type listType = new TypeToken<LinkedList<User>>(){}.getType();
Gson gson = new Gson();
LinkedList<User> users = gson.fromJson(jsonData, listType);
for (Iterator iterator = users.iterator(); iterator.hasNext();) {
	User user = (User) iterator.next();
	System.out.println(user.getUsername());
	System.out.println(user.getUserId());
}

String jsonData = "{\"username\":\"arthinking\",\"userId\":001}";
Gson gson = new Gson();
User user = gson.fromJson(jsonData, User.class);
System.out.println(user.getUsername());
System.out.println(user.getUserId());