https://blog.csdn.net/xishaoguo/article/details/88577459
The link copied in the third step is wrong, you need to log in to oracle first, and then refer to the link below to get the real download address
https://blog.csdn.net/u012271526/article/details/48752361
Later I found out that port 8080 of my server was occupied, and changed the port to 9999
http://你的ip:9999To enter the login page of jenkins
This tutorial seems better