Error - trustAnchors parameter must be non-empty

多个java版本混淆导致的。比如java 11和java8

 

解决方法：

https://stackoverflow.com/questions/6784463/error-trustanchors-parameter-must-be-non-empty

 

On Ubuntu 18.04 the root cause is a conflict between openjdk-11-jdk (which is default) and other packages depending on it. It has already been fixed in Debian and will be included in Ubuntu shortly. Meanwhile the simplest workaround is to demote your java to version 8. Other solutions employing ca-certificates-java are much more complicated.

First remove conflicting packages:

sudo apt-get remove --purge openjdk* java-common default-jdk
sudo apt-get autoremove --purge

Check whether you successfully removed all related packages by:

sudo update-alternatives --config java

The system shall prompt you there is no Java available to config, otherwise this workaround fails.

Then reinstall required packages:

sudo apt-get install openjdk-8-jdk