封装log4j的步骤
Log4jImpl.java //Log4j的实现类 package com.ynwst.enterprise.sys; /** *Title:
*Description:
*Copyright: Copyright (c) 2003 xiaowugui
*Company:http://www.ynwst.com
* @author xiaowugui * @version 1.0 */ import org.apache.log4j.*; import java.io.*; import java.util.*; /** * @author Administrator * * To change the template for this generated type comment go to * Window>Preferences>Java>Code Generation>Code and Comments */ public class Log4jImpl { public static final String PROFILE = "log4j.properties"; /** * Holds singleton instance */ private static Log4jImpl impl; static { impl = new Log4jImpl(); } private Logger log4j; /** * prevents instantiation */ private Log4jImpl() { log4j = LogManager.getLogger(Log4jImpl.class); try { Properties pro = new Properties(); InputStream is = getClass().getResourceAsStream(PROFILE); pro.load(is); PropertyConfigurator.configure(pro); } catch(IOException e) { BasicConfigurator.configure(); e.printStackTrace(); } } public void log(String level,Object msg) { log(level,msg,null); } public void log(String level,Throwable e) { log(level,null,e); } public void log(String level,Object msg,java.lang.Throwable e) { if(log4j != null) { log4j.log((Priority)Level.toLevel(level),msg,e); } } /** * 单例模式 */ static public Log4jImpl getInstance() { return impl; } } Log.java //记录Log使用类 package com.ynwst.enterprise.sys; /** *Title:
*Description:
*Copyright: Copyright (c) 2003 xiaowugui
*Company:
* @author xiaowugui * @version 1.0 */ public class Log { private static Log4jImpl log = Log4jImpl.getInstance(); /** * */ public Log() { //super(); } public static void logError(String msg) { log.log("ERROR",msg); } public static void logError(Throwable e) { log.log("ERROR",null,e); } public static void logWarn(String msg) { log.log("WARN",msg); } public static void logWarn(Throwable e) { log.log("WARN",null,e); } public static void logInfo(String msg) { log.log("INFO",msg); } public static void logInfo(Throwable e) { log.log("INFO",null,e); } public static void logDebug(String msg) { log.log("DEBUG",msg); } public static void logDebug(Throwable e) { log.log("DEBUG",null,e); } } log4j.properties //Log4j配置文件 log4j.rootLogger=DEBUG, A2, A1 log4j.appender.A2=org.apache.log4j.RollingFileAppender log4j.appender.A2.File=G:/enterprise/log/error.log log4j.appender.A2.Append=true log4j.appender.R.MaxFileSize=10000KB log4j.appender.A2.layout=org.apache.log4j.PatternLayout log4j.appender.A2.layout.ConversionPattern=[%-5p][%t] %d{yyyy-MM-dd HH:mm:ss,SSS} message:%m%n log4j.appender.A1=org.apache.log4j.ConsoleAppender log4j.appender.A1.layout=org.apache.log4j.PatternLayout #Pattern to output the caller's file name and line number. #log4j.appender.stdout.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n # Print the date in ISO 8601 format log4j.appender.A1.layout.ConversionPattern=%d [%t] %-5p - %m%n testLog.jsp //调用Log类 <%@ language="java" page="" pageencoding="GBK"> <%@ import="com.ynwst.enterprise.sys.Log" page=""> <%Log.logDebug("DEBUG"); Log.logInfo("INFO"); Log.logWarn("WARN"); Log.logError("ERROR"); try { int i = Integer.parseInt("xxx"); }catch(Exception e) { Log.logDebug(e.toString()); Log.logInfo(e.toString()); Log.logWarn(e.toString()); Log.logError(e.toString()); } %> 注：使用此方法封装Log4j的操作，可以使记录日志变得更方便。唯一不足的是无法返回当前类的相关信息，不过还好，我的错误信息都是自己定义的，所以一般在记录错误信息的时候，都会自己把当前类的相关信息做一个标识。 <%@ page="" language="java" pageencoding="GBK"><%@ page="" import="com.ynwst.enterprise.sys.Log"><%