Android中的HTTP请求（GET/POST）

	public String executeHttpGet(String urlStr) {
		String result = null;
		URL url = null;
		HttpURLConnection connection = null;
		InputStreamReader in = null;

		if (urlStr != null && urlStr.length() > 0) {
			try {
				url = new URL(urlStr);
				connection = (HttpURLConnection) url.openConnection();
				in = new InputStreamReader(connection.getInputStream());
				BufferedReader bufferedReader = new BufferedReader(in);
				StringBuffer strBuffer = new StringBuffer();
				String line = null;
				while ((line = bufferedReader.readLine()) != null) {
					strBuffer.append(line);
				}
				result = strBuffer.toString();
			} catch (Exception e) {
				e.printStackTrace();
			} finally {
				if (connection != null) {
					connection.disconnect();
				}
				if (in != null) {
					try {
						in.close();
					} catch (IOException e) {
						e.printStackTrace();
					}
				}

			}
		}

		return result;
	}

	public String executeHttpPost(String urlStr, String postStr) {
		String result = null;
		URL url = null;
		HttpURLConnection connection = null;
		InputStreamReader in = null;

		if (urlStr != null && urlStr.length() > 0) {
			try {
				url = new URL(urlStr);
				connection = (HttpURLConnection) url.openConnection();
				connection.setDoInput(true);
				connection.setDoOutput(true);
				connection.setRequestMethod("POST");
				connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
				connection.setRequestProperty("Charset", "utf-8");
				DataOutputStream dop = new DataOutputStream(connection.getOutputStream());
				dop.writeBytes(postStr);
				dop.flush();
				dop.close();

				in = new InputStreamReader(connection.getInputStream());
				BufferedReader bufferedReader = new BufferedReader(in);
				StringBuffer strBuffer = new StringBuffer();
				String line = null;
				while ((line = bufferedReader.readLine()) != null) {
					strBuffer.append(line);
				}
				result = strBuffer.toString();
			} catch (Exception e) {
				e.printStackTrace();
			} finally {
				if (connection != null) {
					connection.disconnect();
				}
				if (in != null) {
					try {
						in.close();
					} catch (IOException e) {
						e.printStackTrace();
					}
				}

			}
		}

		return result;
	}