Lobback日志文件

Logback是由log4j创始人Ceki Gülcü设计的又一个开源日志组件。

 

logback.xml

 

<?xml version="1.0" encoding="UTF-8"?> <!-- Reference Manual http://logback.qos.ch/manual/index.html -->
    <configuration>
        <!-- LEVEL:TRACE, DEBUG, INFO, WARN, ERROR, ALL 和 OFF -->
        <!-- 控制台输出 -->
        <appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
            <!-- encoder 可以指定字符集，对于中文输出有意义 -->
            <encoder charset="UTF-8">
                <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
            </encoder>
        </appender>

        <!-- 每日最多生成10个文件，可以通过这些文件查看系统工作状态 -->
        <!--
        <appender name="RollingFile" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
                <level>TRACE</level>
            </filter>
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                <fileNamePattern>${log.root}/WEB-INF/logs/trace-%d{yyyy-MM-dd}.log</fileNamePattern>


                <maxHistory>10</maxHistory>
            </rollingPolicy>
            <encoder>
                <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
            </encoder>
        </appender>
        -->

        <!-- 下面这段注释的代码可以在日志文件超过 5MB 时进行归档，并且归档文件后缀只要是 .zip 或 .gz 就会自动

压缩日志归档 -->
        <appender name="InfoFileZip" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <file>${log.root}/WEB-INF/logs/info.log</file>
            <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
                <level>INFO</level>
            </filter>
            <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
                <fileNamePattern>${log.root}/WEB-INF/logs/bak/info.%i.log.zip</fileNamePattern>


                <minIndex>1</minIndex>
                <maxIndex>10</maxIndex>
            </rollingPolicy>

            <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
                <maxFileSize>10MB</maxFileSize>
            </triggeringPolicy>

            <encoder>
                <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
            </encoder>
        </appender>

        <!-- 时间滚动输出 level为 ERROR 日志 -->
        <appender name="ErrorFile" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                <level>ERROR</level>
                <OnMismatch>DENY</OnMismatch>
                <OnMatch>ACCEPT</OnMatch>
            </filter>
            <File>${log.root}/WEB-INF/logs/error.log</File>
            <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
                <FileNamePattern>${log.root}/WEB-INF/logs/error.log.%i.bak</FileNamePattern>


                <MinIndex>1</MinIndex>
                <MaxIndex>3</MaxIndex>
            </rollingPolicy>
            <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
                <MaxFileSize>100MB</MaxFileSize>
            </triggeringPolicy>
            <encoder>
                <Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg

%n</Pattern>
            </encoder>
        </appender>


    <!-- 输出到控制台和文件，可定义更多的 Appender,默认配置 -->
    <root level="DEBUG">
        <appender-ref ref="stdout" />
    </root>

    <!-- com.sysmaster包配置日志规则 -->
    <logger name="com.sysmaster" level="INFO" additivity="false">
        <appender-ref ref="stdout"/>
        <appender-ref ref="InfoFileZip"/>
        <appender-ref ref="ErrorFile"/>
    </logger>

    <!--为com.sysmaster.po.ResourcePO类配置日志规则 -->
    <!--
    <logger name="com.sysmaster.po.ResourcePO" level="INFO" additivity="false">
        <appender-ref ref="STDOUT"/>
    </logger>
    -->

    <!-- 下面配置一些第三方包的日志过滤级别，用于避免刷屏 -->
    <!--
    <logger name="org.hibernate" level="WARN"/>
    <logger name="org.springframework" level="WARN"/>
    <logger name="com.opensymphony" level="WARN"/>
    <logger name="org.apache" level="WARN"/>
    -->

    <!-- 为 Hibernate 定制日志规则  -->
    <logger name="org.hibernate.type.descriptor.sql.BasicBinder" level="TRACE"/>
    <logger name="org.hibernate.type.descriptor.sql.BasicExtractor" level="DEBUG"/>
    <logger name="org.hibernate.SQL" level="DEBUG"/>
    <logger name="org.hibernate.engine.QueryParameters" level="DEBUG"/>
    <logger name="org.hibernate.engine.query.HQLQueryPlan" level="DEBUG"/>
</configuration>

 

LogbackConfigListener.java

package com.sysmaster.util.logback;

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

/**
 * 用于启用logback日志
 *
 */
public class LogbackConfigListener implements ServletContextListener {

    public void contextInitialized(ServletContextEvent event) {
        LogbackWebConfigurer.initLogging(event.getServletContext());
    }

    public void contextDestroyed(ServletContextEvent event) {
        LogbackWebConfigurer.shutdownLogging(event.getServletContext());
    }
}

 

LogbackConfigurer.java

package com.sysmaster.util.logback;

import java.io.File;
import java.io.FileNotFoundException;
import java.net.URL;

import org.slf4j.LoggerFactory;
import org.springframework.util.ResourceUtils;
import org.springframework.util.SystemPropertyUtils;

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

/**
 *
 * 用于读取logback的配置文件,可以直接用spring->log4j的代码修改
 *
 */
public abstract class LogbackConfigurer
{
    public static final String CLASSPATH_URL_PREFIX = "classpath:";

    public static final String XML_FILE_EXTENSION   = ".xml";

    private static LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
    private static JoranConfigurator configurator = new JoranConfigurator();

    public static void initLogging(String location) throws FileNotFoundException {
        String resolvedLocation = SystemPropertyUtils.resolvePlaceholders(location);
        URL url = ResourceUtils.getURL(resolvedLocation);
        if (resolvedLocation.toLowerCase().endsWith(XML_FILE_EXTENSION)) {
            configurator.setContext(lc);
            lc.reset();
            try {
                configurator.doConfigure(url);
            } catch (JoranException ex) {
                throw new FileNotFoundException(url.getPath());
            }
            lc.start();
        }
    }

    public static void shutdownLogging() {
        lc.stop();
    }

    public static void setWorkingDirSystemProperty(String key) {
        System.setProperty(key, new File("").getAbsolutePath());
    }

}

 

LogbackWebConfigurer.java

package com.sysmaster.util.logback;

import java.io.FileNotFoundException;

import javax.servlet.ServletContext;

import org.springframework.util.ResourceUtils;
import org.springframework.util.SystemPropertyUtils;
import org.springframework.web.util.WebUtils;

/**
 *
 * 用于读取logback的WEB配置文件,可以直接用spring->log4j的代码修改
 *
 */
public abstract class LogbackWebConfigurer
{
    public static final String CONFIG_LOCATION_PARAM  = "logbackConfigLocation";
    public static final String REFRESH_INTERVAL_PARAM  = "logbackRefreshInterval";
    public static final String EXPOSE_WEB_APP_ROOT_PARAM = "logbackExposeWebAppRoot";

    public static void initLogging(ServletContext servletContext) {
        if (exposeWebAppRoot(servletContext)) {
            WebUtils.setWebAppRootSystemProperty(servletContext);
        }

        String location = servletContext.getInitParameter(CONFIG_LOCATION_PARAM);
        if (location != null) {
            try {
                if (!ResourceUtils.isUrl(location)) {
                    location = SystemPropertyUtils.resolvePlaceholders(location);
                    location = WebUtils.getRealPath(servletContext, location);
                }
                servletContext.log("从 [" + location + "]初始化logback的配置");
                LogbackConfigurer.initLogging(location);

            } catch (FileNotFoundException ex) {
                throw new IllegalArgumentException("无效的 'logbackConfigLocation' 配置参数，请检查web.xml中的logbackConfigLocation参数值前是否有classpat字样: " + ex.getMessage());
            }
        }
    }

    public static void shutdownLogging(ServletContext servletContext) {
        servletContext.log("关闭logback");
        try {
            LogbackConfigurer.shutdownLogging();
        } finally {
            if (exposeWebAppRoot(servletContext)) {
                WebUtils.removeWebAppRootSystemProperty(servletContext);
            }
        }
    }

    private static boolean exposeWebAppRoot(ServletContext servletContext) {
        String exposeWebAppRootParam = servletContext.getInitParameter(EXPOSE_WEB_APP_ROOT_PARAM);
        return (exposeWebAppRootParam == null || Boolean.valueOf(exposeWebAppRootParam));
    }

}