下载网页代码

public static String readUrl(String urlName, String encoding) {
		try {
			StringBuffer sb = new StringBuffer();
			URL url = new URL(urlName);
			URLConnection conn = url.openConnection();
			conn.setConnectTimeout(30 * 1000);
			conn.setReadTimeout(30 * 1000);
			BufferedReader br = new BufferedReader(new InputStreamReader(conn
					.getInputStream(), encoding));
			String line;
			while ((line = br.readLine()) != null) {
				sb.append(line);
			}
			return sb.toString();
		} catch (MalformedURLException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}

 

BufferedReader的方法readLine()适用于读取文本，对于二进制文件不适合