遍历文件夹中所有文件，包括子文件夹和文件，有效实现单次程序处理文件的能力，实现大量文件的有效处理。-Traverse all files folder, including sub-folders and files, effective procedures to achieve the ability to single-file, to achieve effective processing large numbers of files.

源程序为格州电子提供的OKI496方案单相智能电能表程序，对设计智能电能表方案应该有用-OKI496 demo for smart meter