linux安裝jdk https://www.cnblogs.com/yuanchao-blog/p/11038962.html
linux安裝mysql
https://www.cnblogs.com/shalldou/p/10767043.html
修改密碼 https://www.cnblogs.com/chuanqi1995/p/11325400.html
https://www.cnblogs.com/chuanqi1995/p/11325400.html
linux安裝maven: