批量插入sql：https://blog.csdn.net/fly910905/article/details/78136988
https://blog.csdn.net/dzy21/article/details/51932352
https://blog.csdn.net/shangrila_kun/article/details/78570956
远程读取文件：https://blog.51cto.com/5880861/1754071
https://segmentfault.com/q/1010000014347565/a-1020000014348271
https://blog.csdn.net/tao_ssh/article/details/52946158?locationNum=12&fps=1
sql：https://www.cnblogs.com/xinlichai0813/p/7592976.html
https://www.jb51.net/article/137983.htm
https://www.cnblogs.com/shuaiandjun/p/7197450.html?utm_source=itdadao&utm_medium=referral
https://www.cnblogs.com/justforcon/p/5668073.html
https://www.cnblogs.com/jnhs/p/10046443.html
https://www.jb51.net/article/48473.htm
读取目录：
https://www.cnblogs.com/haoyul/p/9647968.html
sql日期：https://www.cnblogs.com/myseries/p/7589408.html