spring中使用logback日志组件替换log4j

logback比log4j的强大之处，请到logback的主页去看，我就不啰嗦了，你懂、或者不懂，logback就在那里，无比强大，傲视绝伦。

复制log4j-over-slf4j.jar,logback-classic.jar,logback-core.jar,jcl-over-slf4j.jar到lib目录，删除原有的log4j.jar。

创建一个新类

package com.boaotech.util;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.joran.JoranConfigurator;
import ch.qos.logback.core.joran.spi.JoranException;
/**
 * @author Kiven Lee
 * @version 1.0
 */
public class LogbackConfigListener implements ServletContextListener {
    private static final Logger logger = LoggerFactory.getLogger(LogbackConfigListener.class);
   
    private static final String CONFIG_LOCATION = "logbackConfigLocation";
    @Override
    public void contextInitialized(ServletContextEvent event) {
        //从web.xml中加载指定文件名的日志配置文件
        String logbackConfigLocation = event.getServletContext().getInitParameter(CONFIG_LOCATION);
        String fn = event.getServletContext().getRealPath(logbackConfigLocation);
        try {
            LoggerContext loggerContext = (LoggerContext)LoggerFactory.getILoggerFactory();
            loggerContext.reset();
            JoranConfigurator joranConfigurator = new JoranConfigurator();
            joranConfigurator.setContext(loggerContext);
            joranConfigurator.doConfigure(fn);
            logger.debug("loaded slf4j configure file from {}", fn);
        }
        catch (JoranException e) {
            logger.error("can loading slf4j configure file from " + fn, e);
        }
    }
    @Override
    public void contextDestroyed(ServletContextEvent event) {
    }
}

 在web.xml中加入

<!--初始化日志配置文件 -->
    <listener>
        <listener-class>
            com.boaotech.util.LogbackConfigListener
        </listener-class>
    </listener>
    <context-param>
        <param-name>logbackConfigLocation</param-name>
        <param-value>WEB-INF/logback.xml</param-value>
    </context-param>

 转至用于学习：http://blog.csdn.net/kivenlee/article/details/6284792