When debuging in the eclipse with Tomcat, i meet these error: Server Tomcat v7.0 Server at localhost was unable to start within 45 seconds. If the server requires more time, try increasing the timeout in the server editor.
After searching in google, i found the solution:
Go to Windows option -> select preference. Than Select General -> Network Connection. Than select the Active Provider as Manual. Then restart the tomcat and run. It will works.
Have fun with eclipse!