Error
Command to import the certificate into
the Java keystore fails with the following error:
keytool error: java.lang.Exception:
Certificate not imported, alias already exists
Cause
Alias already exist. Needs to removed
previous alias before adding a new one.
Resolution
Make sure that you don‘t require the
previous import with the same alias. If required , Do this import with new
alias. If not, proceed with the following command.
Delete the certificate with the alias
using the following command
keytool -delete -alias
<Key> -keystore <../.../... /lib/security/cacerts>
-storepass changeit .
Then run the import command.
keytool error: java.lang.Exception: Certificate not imported, alias already exists
原文：http://www.cnblogs.com/z1500592/p/5879385.html