log4j

jar包依赖：

<dependency>    <groupId>log4j</groupId>    <artifactId>log4j</artifactId>    <version>1.2.17</version></dependency>

log4j.xml配置

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE log4j:configuration SYSTEM "log4j.dtd"><log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">    <appender name="console" class="org.apache.log4j.ConsoleAppender">        <layout class="org.apache.log4j.PatternLayout">            <param name="ConversionPattern" value="[%d{yyyy-MM-dd HH:mm:ss}][%-5p]%F:%L - %m%n"/>        </layout>    </appender>    <appender name="file-info" class="org.apache.log4j.RollingFileAppender">        <param name="File" value="/home/www/logs/demoProject/demoProject-info.log" />        <param name="MaxFileSize" value="512KB" />        <param name="MaxBackupIndex" value="3" />        <layout class="org.apache.log4j.PatternLayout">            <param name="ConversionPattern" value="%d %p [%c] - %m%n"/>        </layout>        <filter class="org.apache.log4j.varia.LevelRangeFilter">            <param name="LevelMin" value="trace"/>            <param name="LevelMax" value="info"/>        </filter>    </appender>    <appender name="file-error" class="org.apache.log4j.RollingFileAppender">        <param name="File" value="/home/www/logs/demoProject/demoProject-error.log" />        <param name="MaxFileSize" value="512KB" />        <param name="MaxBackupIndex" value="3" />        <layout class="org.apache.log4j.PatternLayout">            <param name="ConversionPattern" value="%d %p [%c] - %m%n"/>        </layout>        <filter class="org.apache.log4j.varia.LevelRangeFilter">            <param name="LevelMin" value="WARN"/>            <param name="LevelMax" value="ERROR"/>        </filter>    </appender>    <root>        <priority value="info"/>        <appender-ref ref="console"/>        <appender-ref ref="file-info"/>        <appender-ref ref="file-error"/>    </root></log4j:configuration>

测试类：

import org.apache.log4j.Logger;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;/** * Created by yangjiachang on 2016/7/6. */@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations="classpath:spring-context.xml")public class JUnitDemoTest extends AbstractJUnit4SpringContextTests {    private static final Logger logger = Logger.getLogger(JUnitDemoTest.class);    @Test    public void test1(){        logger.trace("trace");        logger.debug("debug");        logger.info("info");        logger.warn("warn");        logger.error("error");        System.out.println("JUnit测试方法1");    }}

执行后控制台输出：

[2016-07-19 15:16:01][INFO ]JUnitDemoTest.java:22 - info
[2016-07-19 15:16:01][WARN ]JUnitDemoTest.java:23 - warn
[2016-07-19 15:16:01][ERROR]JUnitDemoTest.java:24 - error
JUnit测试方法1

输出日志文件：

D:\home\www\logs\demoProject\demoProject-error.log

2016-07-19 15:16:01,030 WARN [JUnitDemoTest] - warn
2016-07-19 15:16:01,030 ERROR [JUnitDemoTest] - error

D:\home\www\logs\demoProject\demoProject-info.log

2016-07-19 15:16:00,665 INFO [org.springframework.test.context.TestContextManager] - Could not instantiate TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener]. Specify custom listener classes or make the default listener classes (and their required dependencies) available. Offending class: [javax/servlet/ServletContext]
2016-07-19 15:16:00,826 INFO [org.springframework.beans.factory.xml.XmlBeanDefinitionReader] - Loading XML bean definitions from class path resource [spring-context.xml]
2016-07-19 15:16:00,932 INFO [org.springframework.context.support.GenericApplicationContext] - Refreshing org.springframework.context.support.GenericApplicationContext@15761df8: startup date [Tue Jul 19 15:16:00 CST 2016]; root of context hierarchy
2016-07-19 15:16:00,996 INFO [org.springframework.beans.factory.support.DefaultListableBeanFactory] - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@37271612: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor]; root of factory hierarchy
2016-07-19 15:16:01,030 INFO [JUnitDemoTest] - info
2016-07-19 15:16:01,037 INFO [org.springframework.context.support.GenericApplicationContext] - Closing org.springframework.context.support.GenericApplicationContext@15761df8: startup date [Tue Jul 19 15:16:00 CST 2016]; root of context hierarchy
2016-07-19 15:16:01,037 INFO [org.springframework.beans.factory.support.DefaultListableBeanFactory] - Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@37271612: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor]; root of factory hierarchy

处理通过log4j.xml配置以外，还可以通过log4j.properties来完成