使用酷盘API写的客户端，实现了登陆、获取用户信息、目录和文件列表，并且显示图片。（注意：对扩展名进行了过滤，只显示图片）-Cool API to write client-side, to achieve a landing, access to user information, directory and file list, and display pictures. (Note: the extension of the filter, and show only pictures)