转到服务器视图，然后双击正在运行的Tomcat服务器。 访问日志文件相对于服务器路径字段中的路径存储，该路径本身是相对于工作空间路径。

Where can I view Tomcat log files in Eclipse?

For some reason my Tomcat installation/log folder is always empty.

BTW, does Tomcat dump to the log file after a while or is it immediate?

Go to the "Server" view, then double-click the Tomcat server you're running. The access log files are stored relative to the path in the "Server path" field, which itself is relative to the workspace path.