用来转换文本文件的编码格式，如ascii转utf8等，解决文本文件找开乱码的问题，程序会自动识别文件的编码，并按用户的要求转换成指定编码-Used to convert text file encoding format, such as utf8 ascii transfer etc., to solve opened garbled text file to find the problem, encoding program will automatically recognize the