Why does my Tomcat always get error 5 when it starts

Cause: An error is reported as soon as it is started, because the boot port 8080 is occupied.

Solution: Check what program port 8080 is occupied, end the program to release port 8080, and restart the project.

The steps are as follows:

1. Press the win+r key on the keyboard on the computer desktop to open the running window, enter cmd, and click OK;

2. Enter netstat -ano| in the cmd window that opensfindstr 8080 to view the processes that are using port 8080.

3. Run the following command to end the process taskkill pid 25216 f:

4. Run the tomcat server again and start it successfully.

1. When you start the server, the project will report an error, and the reason for the error is that the port is occupied.

2. Solution, press the window key + R key and enter cmd to open the DOS window.

3、netstat -ano|findstr 8080 to view the processes that are using port 8080.

4. Run the following command to end the process taskkill pid 25216 f.

5. Run the Tomcat server again and start it successfully.

The main reasons for Tomcat startup failure in Eclipse are as follows:

1.The tomcat that runs independently is not turned off. If tomcat is run before, or if tomcat is disabled abnormally, the tomcat in the process still exists.

The port used is occupied by other software (tomcat default port: 8080).

Solutions to these errors:

1.In the system service, change the startup mode of tomcat from "automatic" to "manual" (by default, tomcat is an auto-started service and starts with boot).

2.Turn off stand-alone Tomcat and ensure that the Tomcat service is disabled before Eclipse starts Tomcat.

3.Check the task manager, see if there is tomcat in the process, and if so, turn it off.

4.If tomcat is not successful in Eclipse, it may be that the port of tomcat is occupied.

a.Find the tomcat path:....In the tomcat, retrieve the port number 8080 and change it to an unoccupied port number, such as 8088.

b.You can use the command netstat -a in dos to check the port usage to see if the port of tomcat is occupied by other software.

It is recommended that you reconfigure Tomcat

We recommend that you take a look at your user permissions.

Misconfiguration of environment variables look online from the new configuration.