On the road of code farmers, there is no way out !!!
Java JDK import CA.cert
https://blog.csdn.net/pzysoft/article/details/62888780
https://blog.packagecloud.io/solve-pkix-path-building-failed/
https://www.itread01.com/details/NDYwaw==.html
Ubuntu Linux install JAVA JDK
sudo apt-get update sudo apt-get install -y openjdk-8-jdk