The video was implemented on an iMac computer. After watching the video, I reported an error when I implemented it on windows7+eclipse+maven.
There is a fee for this video when relevant when searching online, less to do this article.
https://coding.imooc.com/class/134.html
To everyone. Portal:
http://blog.sina.com.cn/s/blog_17a0c55f30102xjac.html
https://www.52pojie.cn/thread-648667-1-1.html
http://www.juhaovip.com/thread-45371-1-1.html
If it doesn't work, please leave a message.