You need to do some more troubleshooting. Have a look at the logs in glassfish3/glassfish/domains/domain1/logs. Or if you have standalone or cluster nodes look in glassfish3/glassfish/nodes/<nodename>/<instancename>/logs.
Also, log into the admin page "http://localhost:4848", default username is admin, default password is adminadmin. On the left there is a tree, find Applications, then your Ear should be listed there. Click it and you'll see a list of modules and components. If your web service is listed there you can click View Endpoint. There is a built-in tester, and you can get the wsdl URL there too.