/*** 得到文件流** @param url 图片地址* @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();//通过输入流获取图片数据byte[] btImg = readInputStream(inStream);//得到图片的二进制数据return btImg;} catch (Exception e) {e.printStackTrace();}return null;}/*** 从输入流中获取数据** @param inStream 输入流* @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();}