Android中的HTTP请求（GET/POST）

HTTP请求处理方法

最新推荐文章于 2021-05-28 10:46:47 发布

转载最新推荐文章于 2021-05-28 10:46:47 发布 · 599 阅读

Java 专栏收录该内容

11 篇文章

订阅专栏

本文介绍了一个简单的Java类，该类提供了执行HTTP GET和POST请求的方法。GET方法通过URL获取资源并返回结果字符串；POST方法则接受URL和POST数据，设置必要的HTTP头信息，发送POST数据并读取响应。

	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;
	}