/*** 得到文件流** @param url 圖片地址* @return*/public static byte[] getFileStream(String url) {try {URL httpUrl = new URL(url);HttpURLConnection conn = (HttpURLConnection) httpUrl.openConnection();conn.setRequestMethod("GET");conn.setConnectTimeout(5 * 1000);InputStream inStream = conn.getInputStream();//通過輸入流獲取圖片數據byte[] btImg = readInputStream(inStream);//得到圖片的二進制數據return btImg;} catch (Exception e) {e.printStackTrace();}return null;}/*** 從輸入流中獲取數據** @param inStream 輸入流* @return* @throws Exception*/public static byte[] readInputStream(InputStream inStream) throws Exception {ByteArrayOutputStream outStream = new ByteArrayOutputStream();byte[] buffer = new byte[1024];int len = 0;while ((len = inStream.read(buffer)) != -1) {outStream.write(buffer, 0, len);}inStream.close();return outStream.toByteArray();}

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