文件夹NSString *directory = [[URL absoluteString] stringByDeletingLastPathComponent]; 文件名NSString *filename = [[URL absoluteString] lastPathComponent];url
NSString *directory = [[URL absoluteString] stringByDeletingLastPathComponent];
NSString *filename = [[URL absoluteString] lastPathComponent];
并不检测文件, 只对字符串连接进行检查code
[fileUrl isFileURL]字符串
[fileUrl isFileURL]