Where is WSDL

[lv]

After running JAX-WS Web Services Ping and Echo Sample , how to get the WSDL?
When I enter localhost:8080/jaxws-samples/services/PingService.PingServicePort 
in the web browser, 
I get error : 
<faultstring>The endpoint reference (EPR) for the Operation not found is 
/jaxws-samples/services/PingService.PingServicePort and the WSA Action = null. 
If this EPR was previously reachable, please contact the server administrator.
</faultstring>