Spring-Spring Web项目中配置使用Log4j 2

小小工匠

发布于 2021-08-16 16:26:21

9990

发布于 2021-08-16 16:26:21

文章被收录于专栏：小工匠聊架构

Log4j 2概述

请查看另外一篇博文Log4j2-Log4j 2介绍及使用

为什么要使用Log4j 2

Web容器中的监听 Log4jConfigListener在 Spring 4.2.1及以后被废弃。

Spring中配置Log4j 2

添加Maven依赖

<dependency>
    <groupId>org.apache.logging.log4jgroupId>
    <artifactId>log4j-apiartifactId>
    <version>${log4j2.version}version>
dependency>
<dependency>
    <groupId>org.apache.logging.log4jgroupId>
    <artifactId>log4j-coreartifactId>
    <version>${log4j2.version}version>
dependency>

<dependency>
    <groupId>org.apache.logging.log4jgroupId>
    <artifactId>log4j-webartifactId>
    <version>${log4j2.version}version>
dependency>


<properties>

        <log4j2.version>2.8.2log4j2.version>
properties>

Web Applications 使用 Log4j 2 需要另外引用log4j-web

https://logging.apache.org/log4j/2.x/manual/webapp.html

配置web.xml

<context-param>  
    <param-name>log4jConfigurationparam-name>  
    <param-value>classpath:log4j2.xmlparam-value>  
context-param>  

<listener>
    <listenerclass>
    org.apache.logging.log4j.web.Log4jServletContextListener
    listener-class>
listener>

配置Log4j 2

具体查看配置Log4j 2

我们这里以xml的方式编写Log4j 2的配置文件

举例，具体请根据实际需要修改

<configuration status="info" monitorInterval="180">

    
    <Properties>
        <Property name="backupFilePatch">D:/workspace/workspace-sts/backupOracle/log/Property>
        <Property name="fileName">backupOracle.logProperty>
      Properties>
    
    <appenders>
        
        <Console name="Console" target="SYSTEM_OUT">
             
            <ThresholdFilter level="trace" onMatch="ACCEPT" onMismatch="DENY" />
            
            <PatternLayout pattern="%d{HH:mm:ss.SSS} %-5level %class{36} %L %M - %msg%xEx%n" />
        Console>

        
        <RollingFile name="RollingFile" fileName="${backupFilePatch}${fileName}"
            filePattern="${backupFilePatch}$${date:yyyy-MM}/app-%d{yyyyMMddHHmmssSSS}.log.gz">
            <PatternLayout
                pattern="%d{yyyy.MM.dd 'at' HH:mm:ss.SSS z} %-5level %class{36} %L %M - %msg%xEx%n" />
            
            <SizeBasedTriggeringPolicy size="20MB" />
            
            <DefaultRolloverStrategy max="20"/>
        RollingFile>
    appenders>

    
    <loggers>
         
         <logger name="org.springframework" level="INFO">logger>
         <logger name="org.mybatis" level="INFO">logger>
         <root level="trace">  
            <appender-ref ref="RollingFile"/>  
            <appender-ref ref="Console"/>  
         root>  
    loggers>
configuration>

使用Log4j 2

具体查看另外一篇博文 Log4j2-Log4j 2介绍及使用

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

...

private static final Logger logger = LogManager.getLogger(XXX.class.getName());

启动web项目可以看到如下信息