With the addition of Tomcat in Eclipse, the debug mode is very easy to use and is not described here.
The recent Tomcat open debug mode in Eclipse is not able to start, add time can not be solved, but non-debug mode to open, I think is eclipse too pit
More pits, will slowly find a solution. I'll just say a few of my own ways.
1. Close Eclipse, delete workspace, restart (rough, wasted Time)
2. Delete the server folder for Tomcat and workspace under the server view (deleted on Eclipse, erase the disk),
This is not the end, the most important step, delete the workspace \.metadata\.plugins\org.eclipse.wst.server.core folder (be sure to do this folder, its evil origin)
To re-add the server on eclipse, I tried it.
3. The most effective and simple method
When you have successfully configured Tomcat, back up the workspace \.metadata\.plugins\org.eclipse.wst.server.core folder when you are in good condition, replace the file when it is unavailable
O (∩_∩) o haha ~ so simple rude!!!!
Tomcat debug mode boot timeout in Eclipse 45s