JAVA远程读取文件信息

        fileUrl eg: "http://ip:port/group1/M00/00/00/**.png"
        BASE64Encoder encoder = new BASE64Encoder();
        byte[] bData = null;
        URL url = new URL(fileUrl );
        //创建url连接;
        HttpURLConnection urlconn = (HttpURLConnection) url.openConnection();
        //链接远程服务器;
        urlconn.connect();
        InputStream in = urlconn.getInputStream();
        //base64编码
        bData = new byte[in.available()];
        in.read(bData);
        in.close();
        String binaryData = encoder.encode(bData);