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
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
原文：https://www.cnblogs.com/dtdxrk/p/8419605.html