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Log4J的配置

在web.xml文件中添加

<servlet-name>log4j</servlet-name>

<servlet-class>com.log4j.Log4jInit</servlet-class>

<init-param>

<param-name>log4j</param-name>

<param-value>/WEB-INF/log4j.properties</param-value>

</init-param>

<load-on-startup>1</load-on-startup>

</servlet>

com.log4j.Log4jInit需要自己寫，貌似新版log4J已經不帶初始化文件了

import org.apache.log4j.*;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class Log4jInit extends HttpServlet {

/**

*

*/

private static final long serialVersionUID = 1L;

public void init() {

String prefix = getServletContext().getRealPath("/");

String file = getInitParameter("log4j");

// if the log4j-init-file is not set, then no point in trying

System.out.println("

.log4j start");

if(file != null)

{

PropertyConfigurator.configure(prefix+file);

System.out.println(prefix+file);

}

public void doGet(HttpServletRequest req, HttpServletResponse res) {

}

普通應用程序中的Log4jInit

public class Log4jInit {

private static final long serialVersionUID = 1L;

public static void main(String[] args) {

PropertyConfigurator.configure("/src/log4j.properties");

}

log4j.properties文件，放到WEB-INF目錄下，具體每個參數是什么意思，查一下參考文檔

log4j.rootLogger=debug, stdout, R

log4j.appender.stdout=org.apache.log4j.ConsoleAppender

log4j.appender.stdout.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

log4j.appender.R=org.apache.log4j.RollingFileAppender

log4j.appender.R.File=example.log

log4j.appender.R.MaxFileSize=100KB

# Keep one backup file

log4j.appender.R.MaxBackupIndex=1

log4j.appender.R.layout=org.apache.log4j.PatternLayout

log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n

#log4j.appender.R = org.apache.log4j.RollingFileAppender

#log4j.appender.R.File = logs\\test.log

#log4j.appender.R.MaxFileSize = 1MB

#log4j.appender.R.MaxBackupIndex = 3

#log4j.appender.R.layout = org.apache.log4j.PatternLayout

#log4j.appender.R.layout.ConversionPattern =[%d] %-4r [%t] %-5p %c %x - %m %n

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posted on 2007-05-11 13:32 TiGERTiAN 閱讀(471) 評論(0) 編輯收藏所屬分類: Java

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