https://www.exception.site/essay/how-to-free-use-intellij-idea-2019-3 激活
http://117.184.59.230:4532/?%E8%BD%AF%E4%BB%B6/IDEA2021.3 工具下载地址
https://blog.csdn.net/Hami1ton/article/details/121785845 背景图加载