通过http URL 获取图片流 转为字节数组

一、通过http URL 获取图片流 转为字节数组

/** * 获取 文件 流 * @param url * @return * @throws IOException */ private byte[] getFile(String url) throws IOException{ URL urlConet = new URL(url); HttpURLConnection con = (HttpURLConnection)urlConet.openConnection(); con.setRequestMethod("GET"); con.setConnectTimeout(4 * 1000); InputStream inStream = con .getInputStream(); //通过输入流获取图片数据 ByteArrayOutputStream outStream = new ByteArrayOutputStream(); byte[] buffer = new byte[2048]; int len = 0; while( (len=inStream.read(buffer)) != -1 ){ outStream.write(buffer, 0, len); } inStream.close(); byte[] data = outStream.toByteArray(); return data; }

二、读取本地文件转为数组

/** * 读取 本地文件，转为字节数组 * @param url 本地文件路径 * @return * @throws IOException */ private byte[] getImage(String url) throws IOException{ BufferedInputStream in = new BufferedInputStream(new FileInputStream(url)); ByteArrayOutputStream out = new ByteArrayOutputStream(1024); byte[] temp = new byte[2048]; int size = 0; while ((size = in.read(temp)) != -1) { out.write(temp, 0, size); } in.close(); byte[] content = out.toByteArray(); return content; }