logback 学习

偶然间使用spring tool suit看到这个日志框架；就去看了下与log4j的区别，发现比前者强大不少，抽空学习了下相关配置；

<!-- Logging with SLF4J & LogBack --><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>${slf4j.version}</version><scope>compile</scope></dependency><dependency><groupId>ch.qos.logback</groupId><artifactId>logback-classic</artifactId><version>${logback.version}</version><scope>runtime</scope></dependency>

以上是maven配置的引用；

同时还要在项目的src/main/resource下配置一个logback.cml的默认识别文件；内容如下

<?xml version="1.0" encoding="UTF-8"?><!-- configuration file for LogBack (slf4J implementation)See here for more details: http://gordondickens.com/wordpress/2013/03/27/sawing-through-the-java-loggers/ --><configuration scan="true" scanPeriod="30 seconds"><!-- 配置当前项目路径 --><property name="contextPath" value="logs"/><property name="logPath" value="${contextPath}"/>    <!--Appendar详解: http://logback.qos.ch/manual/appenders.html#RollingFileAppender -->    <!-- 日志输出文件配置 -->    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">        <!-- 当前Log文件名 -->        <file>${logPath}/monitor.log</file>        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">            <!-- 非当天的Log文件压缩备份为 archive/ldap-pwd.2014-08-10.zip -->            <fileNamePattern>${logPath}/monitor.log.%d{yyyy-MM-dd}</fileNamePattern>            <!-- 超过30天的备份文件会被删除 -->            <maxHistory>30</maxHistory>        </rollingPolicy>        <layout class="ch.qos.logback.classic.PatternLayout">            <!-- 格式说明:http://logback.qos.ch/manual/layouts.html#ClassicPatternLayout -->            <Pattern>%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %40logger{40} - %msg%n</Pattern>        </layout>    </appender><!-- 日志控制台输出配置 -->    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">        <encoder>            <pattern>%d{yyyy-MM-dd HH:mm:ss} [%thread] %logger{36} - %msg%n</pattern>         </encoder>        <!-- 过滤输出日志信息 通过修改level来查看输出日志情况-->        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">        <level>debug</level>        </filter>    </appender><!-- 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" />        <!-- show parameters for hibernate sql 专为 Hibernate 定制 -->      <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" />        <!-- Uncomment and add your logger here: <logger name="org.springframework.samples.service.service" level="debug"/> -->        <!-- 配置日志总体输出级别 -->    <root level="trace">    <appender-ref ref="FILE" />        <appender-ref ref="console"/>    </root>    </configuration>

相关测试代码很简单：

import org.slf4j.Logger;import org.slf4j.LoggerFactory;public class LogBackTest {public static void main(String[] args){Logger debugLogger = LoggerFactory.getLogger(LogBackTest.class);debugLogger.trace("log trace");debugLogger.debug("log debuger");debugLogger.info("log info");debugLogger.warn("log warn");debugLogger.error("log error");}}

通过修改配置文件logback.xml的参数level来查看不同情况下的运行状况；

学习网站：

http://blog.csdn.net/haidage/article/details/6794509

http://forever8tf.iteye.com/blog/1295855