通过http URL 获取图片流 转为字节数组

通过http URL 获取图片流 转为字节数组

读取本地文件转为数组

/**
     * 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;
    }

/**
     * 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;
    }