# 2 楼答案 从Log4J Java - A simple Log4J example package com.devdaily.log4jdemo; import org.apache.log4j.Category; import org.apache.log4j.PropertyConfigurator; import java.util.Properties; import java.io.FileInputStream; import java.io.IOException; /** * A simple Java Log4j example class. * @author alvin alexander, devdaily.com */ public class Log4JExample { // our log4j category reference static final Category log = Category.getInstance(Log4JDemo.class); static final String LOG_PROPERTIES_FILE = "lib/Log4J.properties"; public static void main(String[] args) { // call our constructor new Log4JExample(); // Log4J is now loaded; try it log.info("leaving the main method of Log4JDemo"); } public Log4JExample() { initializeLogger(); log.info( "Log4JExample - leaving the constructor ..." ); } private void initializeLogger() { Properties logProperties = new Properties(); try { // load our log4j properties / configuration file logProperties.load(new FileInputStream(LOG_PROPERTIES_FILE)); PropertyConfigurator.configure(logProperties); log.info("Logging initialized."); } catch(IOException e) { throw new RuntimeException("Unable to load logging property " + LOG_PROPERTIES_FILE); } } }
# 3 楼答案 log4j的基础知识和中间示例 http://aayushtuladhar.wordpress.com/2012/12/01/testtt/ log4j最佳医生 http://logging.apache.org/log4j/1.2/manual.html
# 1 楼答案
Log4J Manual...
# 2 楼答案
从Log4J Java - A simple Log4J example
# 3 楼答案
log4j的基础知识和中间示例
http://aayushtuladhar.wordpress.com/2012/12/01/testtt/
log4j最佳医生
http://logging.apache.org/log4j/1.2/manual.html