logback日志框架的简单使用-优快云博客

本文详细介绍如何在Maven项目中使用Logback进行日志管理，包括依赖添加、web.xml配置、logback.xml编写及日志级别颜色设置，实现不同级别的日志按日期和文件大小滚动保存。

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1.首先在maven中增加依赖

<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-classic</artifactId>
    <version>${logback.version}</version>
</dependency>
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>jcl-over-slf4j</artifactId>
    <version>${jcl-over.version}</version>
</dependency>

定义各自版本

  <logback.version>1.1.11</logback.version>
  <jcl-over.version>1.7.12</jcl-over.version>

因为采用的是maven聚合项目，所以这里 parent项目和common项目都需要加上，但是只需要给parent项目添加版本管理就行了

2.web.xml配置

<!--加载logback.xml配置文件-->
  <context-param>
    <param-name>logbackConfigLocation</param-name>
    <param-value>classpath:properties/logback.xml</param-value>
  </context-param>
  <listener>
    <listener-class>ch.qos.logback.ext.spring.web.LogbackConfigListener</listener-class>
  </listener>

3.编写logback.xml

在线工具，可以将log4j的properties文件直接转换成logback的xml文件，地址如下：

http://logback.qos.ch/translator/

logback的详细用法及其xml文件的相关语法，可参见它的用户向导，地址如下：

http://logback.qos.ch/manual/introduction.html

具体配置可以如下：（转自http://www.mkyong.com/logging/logback-xml-example/）更加具体的配置可以参考文档 https://logback.qos.ch/manual/configuration.html

<?xml version="1.0" encoding="UTF-8"?>
<configuration xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://www.padual.com/java/logback.xsd" debug="false"
               scan="true" scanPeriod="30 second">
    <property name="PROJECT" value="app-demo" />
    <property name="ROOT" value="${catalina.base}/logs/${PROJECT}/" />
    <property name="FILESIZE" value="50MB" />
    <property name="MAXHISTORY" value="100" />
    <timestamp key="DATETIME" datePattern="yyyy-MM-dd HH:mm:ss" />
    <!-- 控制台打印 -->
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>[%-5level] %d{${DATETIME}} [%thread] %logger{36} - %m%n</pattern>
        </encoder>
    </appender>
    <!-- ERROR 输入到文件，按日期和文件大小 -->
    <appender name="ERROR-OUT" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoder>
            <pattern>[%-5level] %d{${DATETIME}} [%thread] %logger{36} - %m%n</pattern>
        </encoder>
        <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>${ROOT}%d/error.%i.log</fileNamePattern>
            <maxHistory>${MAXHISTORY}</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>${FILESIZE}</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
    </appender>
    <!-- WARN 输入到文件，按日期和文件大小 -->
    <appender name="WARN-OUT" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoder>
            <pattern>[%-5level] %d{${DATETIME}} [%thread] %logger{36} - %m%n</pattern>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>WARN</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${ROOT}%d/warn.%i.log</fileNamePattern>
            <maxHistory>${MAXHISTORY}</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>${FILESIZE}</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
    </appender>
    <!-- INFO 输入到文件，按日期和文件大小 -->
    <appender name="INFO-OUT" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoder>
            <pattern>[%-5level] %d{${DATETIME}} [%thread] %logger{36} - %m%n</pattern>
        </encoder>
        <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>${ROOT}%d/info.%i.log</fileNamePattern>
            <maxHistory>${MAXHISTORY}</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>${FILESIZE}</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
    </appender>
    <!-- DEBUG 输入到文件，按日期和文件大小 -->
    <appender name="DEBUG-OUT" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoder>
            <pattern>[%-5level] %d{${DATETIME}} [%thread] %logger{36} - %m%n</pattern>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>DEBUG</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${ROOT}%d/debug.%i.log</fileNamePattern>
            <maxHistory>${MAXHISTORY}</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>${FILESIZE}</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
    </appender>
    <!-- TRACE 输入到文件，按日期和文件大小 -->
    <appender name="TRACE-OUT" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoder>
            <pattern>[%-5level] %d{${DATETIME}} [%thread] %logger{36} - %m%n</pattern>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>TRACE</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${ROOT}%d/trace.%i.log</fileNamePattern>
            <maxHistory>${MAXHISTORY}</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>${FILESIZE}</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
    </appender>
    <!-- Logger 根目录 -->
    <root level="DEBUG">
        <appender-ref ref="STDOUT" />
        <appender-ref ref="ERROR-OUT" />
        <appender-ref ref="WARN-OUT" />
        <appender-ref ref="INFO-OUT" />
        <appender-ref ref="DEBUG-OUT" />
        <appender-ref ref="TRACE-OUT" />
    </root>
</configuration>

启动项目，效果如下：

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