tomcat的catalina.out 和 catalina.log有啥区别？

Question

譬如

catalina.2017-08-30.log

catalina.out

Answer 1

不同类型的日志吧

Answer 2

这些东西最好去看tomcat的官方文档。
文档一些摘录：

    When running Tomcat on unixes, the console output is usually redirected to the file named catalina.out. The name is configurable using an environment variable. (See the startup scripts). Whatever is written to System.err/out will be caught into that file. That may include:

Uncaught exceptions printed by java.lang.ThreadGroup.uncaughtException(..)
Thread dumps, if you requested them via a system signal
When running as a service on Windows, the console output is also caught and redirected, but the file names are different.

The default logging configuration in Apache Tomcat writes the same messages to the console and to a log file. This is great when using Tomcat for development, but usually is not needed in production.

地址：文档地址