import?java.io.BufferedReader;
import?java.io.IOException;
import?java.io.InputStreamReader;
import?java.io.PrintWriter;
import?java.net.HttpURLConnection;
import?java.net.URL;
import?java.net.URLConnection;
import?java.text.SimpleDateFormat;
import?java.util.Date;
/**
?*?為OneNet平臺操作提供的java方法
?*?
?*?@author?lixu
?*?
?*/
public?class?OneNetAPI?{

	public?static?void?main（String[]?args）?{
		//?System.out.println（OneNetAPI.getDataStreams（“10000“?“apikey“??“userCount“））;
	}

	/**
	?*?向OneNet請求創建新的數據流
	?*?
	?*?@param?apiKey?
	?*?@param?datastreamsId:數據流id
	?*?@param?deviceId:設備ID
	?*?@param?unit:單位
	?*?@param?symbol:符號
	?*?@return
	?*/
	public?static?String?createStreamsInOneNet（String?apiKey?String?datastreamsId
			String?deviceId?String?unit?String?symbol）?{
		PrintWriter?out?=?null;
		BufferedReader?in?=?null;
		String?url?=?“http://api.heclouds.com/devices/“?+?deviceId
				+?“/datastreams“;
		String?result?=?““;
		//?組織數據格式
		String?query?=?“{\“id\“:\““?+?datastreamsId?+?“\“\“unit\“:\““?+?unit
				+?“\“\“unit_symbol\“:\““?+?symbol?+?“\“}“;
		try?{
			URL?realUrl?=?new?URL（url）;
			//?打開和URL之間的連接
			URLConnection?conn?=?realUrl.openConnection（）;

			conn.setRequestProperty（“connection“?“Keep-Alive“）;
			conn.setRequestProperty（“api-key“?apiKey）;
			//?發送POST請求必須設置如下兩行
			conn.setDoOutput（true）;
			conn.setDoInput（true）;
			//?發送請求參數
			out?=?new?PrintWriter（conn.getOutputStream（））;
			out.write（query）;
			out.flush（）;
			in?=?new?BufferedReader（
					new?InputStreamReader（conn.getInputStream（）））;
			String?line;
			while?（（line?=?in.readLine（））?!=?null）?{
				result?+=?line;
			}
		}?catch?（Exception?e）?{
			System.out.println（“創建數據流?發送?POST請求出現異常！“）;
		}?finally?{
			try?{
				if?（out?!=?null）?{
					out.close（）;
				}
				if?（in?!=?null）?{
					in.close（）;
				}
			}?catch?（IOException?ex）?{
				System.out.println（“IO關閉異常“）;
			}
		}
		return?result;
	}

	/**
	?*?刪除數據流
	?*?
	?*?@param?deviceId：設備ID
	?*?@param?apiKey
	?*?@param?datastreamId：數據流ID
	?*?@return
	?*/
	public?static?String?deleteDataStreams（String?deviceId?String?apiKey
			String?datastreamId）?{
		String?result?=?““;
		BufferedReader?in?=?null;
		try?{
			String?url?=?“http://api.heclouds.com/devices/“?+?deviceId
					+?“/datastreams/“?+?datastreamId;
			URL?realUrl?=?new?URL（url）;
			//?打開和URL之間的連接
			HttpURLConnection?connection?=?（HttpURLConnection）?realUrl
					.openConnection（）;
			//?設置通用的請求屬性
			connection.setRequestProperty（“Content-Type“
					“application/x-www-form-urlencoded“）;
			connection.setRequestMethod（“DELETE“）;
			connection.setRequestProperty（“api-key“?apiKey）;
			//?建立實際的連接
			connection.connect（）;
			//?定義?BufferedReader輸入流來讀取URL的響應
			in?=?new?BufferedReader（new?InputStreamReader（
					connection.getInputStream（）））;
			String?line;
			while?（（line?=?in.readLine（））?!=?null）?{
				result?+=?line;
			}

		}?catch?（Exception?e）?{
			System.ou