How to view tomcat error log

View method: 1. catalina.out: located in the logs folder of Tomcat, containing Tomcat startup information and error information; 2. localhost.log: located in the logs folder, containing applications on the local host The log information of the program; 3. host-manager.log: located in the logs folder, containing the log information of the Tomcat Manager application; 4. manager.log: located in the logs folder.

Operating system for this tutorial: Windows 10 system, Dell G3 computer.

To view Tomcat's error log, you need to find Tomcat's log file. Tomcat usually generates several different log files, including catalina.out, catalina.log, etc. The following are some common Tomcat log files and their functions:

1, catalina.out or catalina.log:

is located in Tomcat’s logs folder.

Contains Tomcat startup information and error information.

Here you can check the overall running status of Tomcat.

2. localhost.log:

is located in the logs folder.

Contains log information for applications on localhost.

3. host-manager.log:

is located in the logs folder.

Contains log information for the Tomcat Host Manager application.

4. manager.log:

is located in the logs folder.

Contains the log information of the Tomcat Manager application.

You can view these log files using a text editor or command line tool. For example, you can use the tail command to view the latest log information in real time:

tail -f catalina.out

or

tail -f logs/catalina.log

The above command will display the latest log information, making it easier for you to view Tomcat errors or exceptions. If you have problems running Tomcat, looking at these log files can often provide clues as to the cause of the problem.

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