基本上使用log4j的包放入到WEB-INF/lib/下 log4j.properties放到WEB-INF/classes下 即可。有文档说有其他设置,没必要了。 test.jsp <%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <%@ page import= "org.apache.log4j.Logger "%> <html> <head> <title> Test Log4j </title> </head> <body align=center> <% Logger log = Logger.getLogger( "Test Message: "); log.info( "Message from Log4j "); %> log test </body> </html> log4j.properties