Java - use system DNS server settings

Question

I'm running dnsmasq on OSX for local offline development, and I've added 127.0.0.1 as the top DNS server in my network settings. Everything works as expected in the terminal.

My Java tests don't seem to be using the local DNS server, which is a pain as that's the main reason I needed it!

What configuration is needed for Java to pick up system DNS settings? Do I need to pass JVM system properties telling it to ise localhost?

Answer 1

Yes, you need to update system settings to use local dns.

System.setProperty("sun.net.spi.nameservice.nameservers", "127.0.0.1");
System.setProperty("sun.net.spi.nameservice.provider.1", "dns,sun");