public static String httpPost(String source, String params) {		URL url = null;		HttpURLConnection conn = null;		OutputStream os = null;		String ret = null;		try {			url = new URL(source);			conn = (HttpURLConnection) url.openConnection();			addRequestHeader(conn);			conn.setRequestMethod("POST");			conn.setDoInput(true);			conn.setDoOutput(true);			conn.setUseCaches(false);			conn.connect();			if (params != null) {				os = conn.getOutputStream();				os.write(params.getBytes("UTF-8"));				os.flush();			}			InputStream is = conn.getInputStream();			ret = getResponse(is);		} catch (MalformedURLException e) {			// TODO Auto-generated catch block			e.printStackTrace();		} catch (IOException e) {			// TODO Auto-generated catch block			e.printStackTrace();		} finally {			if (os != null) {				try {					os.close();				} catch (IOException e) {					// TODO Auto-generated catch block					e.printStackTrace();				}			}			if (conn != null) {				conn.disconnect();			}		}		return ret;	}	public static String httpGet(String source) {		URL url = null;		HttpURLConnection conn = null;		String ret = null;		try {			url = new URL(source);			conn = (HttpURLConnection) url.openConnection();			addRequestHeader(conn);			conn.setRequestMethod("GET");			conn.setDoInput(true);			conn.setUseCaches(false);			conn.connect();			InputStream is = conn.getInputStream();			ret = getResponse(is);		} catch (MalformedURLException e) {			// TODO Auto-generated catch block			e.printStackTrace();		} catch (IOException e) {			// TODO Auto-generated catch block			e.printStackTrace();		} finally {			if (conn != null) {				conn.disconnect();			}		}		return ret;	}		public static String getResponse(InputStream is) {		GZIPInputStream gzip = null;		ByteArrayOutputStream baos = new ByteArrayOutputStream();		String ret = null;		try {			gzip = new GZIPInputStream(is);			int len = 0;			byte[] buffer = new byte[1024];			while ((len = gzip.read(buffer)) != -1) {				baos.write(buffer, 0, len);			}			baos.flush();			ret = new String(baos.toByteArray(), "UTF-8");		} catch (IOException e) {			// TODO Auto-generated catch block			e.printStackTrace();		} finally {			try {				if (baos != null) {					baos.close();				}				if (gzip != null) {					gzip.close();				}				if (is != null) {					is.close();				}			} catch (IOException e) {				// TODO Auto-generated catch block				e.printStackTrace();			}					}		return ret;			}		public static void addRequestHeader(HttpURLConnection conn) {		conn.setRequestProperty("Accept", "text/html, application/xhtml+xml, application/xml;q=0.9, */*;q=0.8");		conn.setRequestProperty("Accept-Charset", "utf-8, iso-8859-1;q=0.5");		conn.setRequestProperty("Accept-Encoding", "gzip, deflate");		conn.setRequestProperty("Accept-Language", "zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2");		conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:47.0) Gecko/20100101 Firefox/47.0");	}