Detailed explanation of the solution to Tomcat's crash when double-clicking startup.bat

As a programmer who has just learned Tomcat, this is a common mistake.

1. Environment variable problem

1.1 First, you need to confirm whether the Java environment is configured correctly and whether the JDK is installed correctly

win+R to open cmd, enter java or javac
The following figure shows that the JDK configuration is correct:

If not, refer to JDK installation and configuration. If there are no problems with the above, see below.

1.2 Confirm Tomcat's environment variable configuration

For the free installation version of Tomcat, when starting Tomcat, it is necessary to read the environment variables and configuration information. Without this information, the environment variables cannot be registered, resulting in a crash.
Solution:

1: Find startup.bat in the bin folder of the unzipped tomcat, right-click -> Edit. Add the following two lines to the top of the file:
Note: The following path should be copied according to your own installation path

SET JAVA_HOME=D:\jdk1.8.0_131 (java jdk directory)
SET TOMCAT_HOME=D:\Tomcat\apache-tomcat-9.0.40-windows-x64\apache-tomcat-9.0.40 (the directory of the decompressed tomcat file)

As shown in the figure:

2. Find shutdown.bat in the unzipped tomcat bin folder, right-click -> Edit. Add the following two lines to the head of the file:

Note: The following path should be copied according to your own installation path

SET JAVA_HOME=D:\jdk1.8.0_131 (java jdk directory)
SET TOMCAT_HOME=D:\Tomcat\apache-tomcat-9.0.40-windows-x64\apache-tomcat-9.0.40 (the directory of the decompressed tomcat file)

As shown in the figure:

After configuration, just click start.bat to start.

2. Port occupation problem

If you are sure that there is no problem with the environment variable configuration, the port may be occupied.
Generally, the default port of Tomcat is 8080
For Windows systems, press win+R to open cmd and enter in the command line

netstat -ano | findstr 8080

To see if there is a process currently occupying the port

If you can see that the port is occupied, you can use the PID (process ID) to check which program is occupying the port. Enter in the command line

tasklist | findstr PID

Note: PID is the number in the last column. Do not forget the space when entering the command.

After finding the process occupying the port, enter in the command line

taskkill /f /t /im process name

Note: The space before the slash means the process name is the process name just found.

At this point, the process occupying the port is ended. At this time, double-click start.bat and there should be no problem.

This is the end of this article on how to solve the problem of Tomcat crashing when you double-click startup.bat. For more information about Tomcat crashing when you double-click startup.bat, please search 123WORDPRESS.COM's previous articles or continue to browse the following related articles. I hope you will support 123WORDPRESS.COM in the future!