java webproject中logback换配置文件的路径

本人小站点： http://51kxd.com/ 欢迎大家不开心的时候訪问訪问，调节一下心情

web.xml中配置：

<context-param>
<param-name>logbackConfigLocation</param-name>
<param-value>file:/datum/Data/conf/config/logback.xml</param-value>
</context-param>

<context-param>
<param-name>logbackConfigLocation</param-name>
<param-value>file:E:\datum\data\conf\logback.xml</param-value>
</context-param>

当中file:一定要有。

<listener>
<listener-class>com.cxfmvcstu.comn.LogbackConfigListener</listener-class>
</listener>

LogbackConfigListener为自己的实现类

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.UrlResource;

import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.joran.JoranConfigurator;
import ch.qos.logback.core.joran.spi.JoranException;


/**
 * @description 
 * @path com.cxfmvcstu.comn.LogbackConfigListener
 * @author lijun.justin
 * @time 2015年6月27日 下午8:13:19
 */
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中载入指定文件名称的日志配置文件
		String logbackConfigLocation = event.getServletContext().getInitParameter(CONFIG_LOCATION);
		String fn = event.getServletContext().getRealPath(logbackConfigLocation);
		try {
			UrlResource urlResource = new UrlResource(logbackConfigLocation);
			LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory();
			loggerContext.reset();
			JoranConfigurator joranConfigurator = new JoranConfigurator();
			joranConfigurator.setContext(loggerContext);
			//joranConfigurator.doConfigure(fn);
			joranConfigurator.doConfigure(urlResource.getFile().getAbsolutePath());
			logger.debug("loaded slf4j configure file from {}", fn);
		} catch (JoranException e) {
			logger.error("can loading slf4j configure file from " + fn, e);
		}catch (Exception e) {
			logger.error(e.getMessage(), e);
		}

	}

	@Override
	public void contextDestroyed(ServletContextEvent event) {
	}
}

要依赖于spring的UrlResource类。里面没用的代码。读者自己精简一下

logback.xml的配置演示样例：

<?xml version="1.0" encoding="UTF-8" ?>
<configuration scan="true" scanPeriod="60 seconds" debug="false">

<appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%date [%thread] %-5level %logger{80} - %msg%n</pattern>
</encoder>
</appender>


<appender name="file—INFO"
class="ch.qos.logback.core.rolling.RollingFileAppender">
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>INFO</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY </onMismatch>
</filter>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<FileNamePattern>D:/logs/INFO.%d{yyyy-MM-dd}.log</FileNamePattern>
<MaxHistory>30</MaxHistory>
</rollingPolicy>
<encoder>
<pattern>%date [%thread] %-5level %logger{80} - %msg%n</pattern>
</encoder>
</appender>


<appender name="file—error" class="ch.qos.logback.core.rolling.RollingFileAppender">
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>ERROR</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY </onMismatch>
</filter>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<FileNamePattern>D:/logs/error.%d{yyyy-MM-dd}.log</FileNamePattern>
<MaxHistory>30</MaxHistory>
</rollingPolicy>
<encoder>
<pattern>%date [%thread] %-5level %logger{80} - %msg%n</pattern>
</encoder>
</appender>





<root level="INFO">
<appender-ref ref="stdout" />
<appender-ref ref="file—INFO" />
<appender-ref ref="file—error" />
<appender-ref ref="file-str" />
<appender-ref ref="db" />
</root>

</configuration>

本人小站点： http://51kxd.com/ 欢迎大家訪问