Problem 20 with Tomcat startup

Use Task Manager to close the background program and restart it.

The specific steps are as follows:

First, go back to your desktop and right-click on the toolbar that appears.

Select Start Task Manager in the toolbar and click Open.

Find "Processes" in the Task Manager and select this program.

Then click "End Process" to close the program.

Finally, restart tomcat and you can achieve a successful startup.

This may be that some processes are still running when you tomcat is closed, resulting in a conflict when restarting tomcat, you can find the process with tomcat in the process management, end it, try to restart it, if it doesn't work, try the following.

1. Set host: localhost;

2. Set the debug port of Eclipse or NetBean to see if it is the same as the debug port of Tomcat;

3. Check if there are other running processes that occupy the debug port;

4. Configure a firewall to allow access to the network.

If it doesn't work, it's your local network problem, try ping your IP to see if you can ping it.

These are all solutions that have been collected online to see if they can help you.

1. Possible situation or cautious matching: add the lib package in struts to the commonlib in the installation directory or, solution: remove! If you need to use it, put it in a different path, and then configure the environment variables! Error Environment:

2. Possibility 2: The default port of tomcat is 8080, which may have been occupied by others.

Solution: Change the broken slogan in the conf folder under the shirt finger installation path!

3. Possibility 3: There is a problem with the environment variables, check carefully.

4. Possibility 4: If there are two versions of tomcat on this machine, when configuring the environment variable catalina home, you cannot match both of them. If it is used, it may cause the DOS interface to be started but there is no prompt or the initialization file at startup will appear when starting Tomcat.

Solution: Modify Catalina Home, configure which Tomcat is used.

5. Possible situation 5: It may be that the version of Tomcat and the version of JDK do not match, you can try to change the version of JDK. If this problem occurs, it can be started after replacing it.

6. Possibility 6: Check the error message > catalinarun.

Solution: After restarting the machine, it's all right.

Whether you are under the installation version or the free installation version, the free installation version may not be fully filed, and it is better to install the next version. There's going to be a process to start, as you can see.

Missing package Search online for jar packages.