node读写本地文件

http://nodejs.cn/api/fs.html#fs_fs_writefilesync_file_data_options

https://www.cnblogs.com/diaosizhang/p/4089367.html

https://www.cnblogs.com/pingfan1990/archive/2015/08/05/4706168.html

http://www.jb51.net/article/80538.htm