Log4j2 - 配置RolloverStrategy以删除旧的日志文件

本文介绍了Log4j2 - 配置RolloverStrategy以删除旧的日志文件的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 我正在尝试配置 log4j 以仅保留指定数量的备份文件或保留不超过某个年龄的文件。最终，我希望时间[每日]基于触发策略并保留30个备份文件或删除30天以前的文件。 I'm trying to configure log4j to keep only specified amount of backup files or keep files that are not older than some age. Ultimately I want to have time [daily] based triggering policy and keep 30 backup files or delete files that are older then 30 days. 在做了一些研究之后，我了解到在使用时间策略时我无法指定备份文件的最大数量但是我遇到了这个问题 https://issues.apache.org/jira/browse/LOG4J2-435 和此文档片段 http://logging.apache.org/log4j/ 2.x / manual / appenders.html＃CustomDeleteOnRollover ，描述如何根据文件的年龄和名称模式删除文件。现在我尝试在每分钟创建新备份文件的简单示例中应用此配置，并将自动删除3分钟以前的文件。为此，我使用以下pom创建了简单的maven项目：After doing some research I learned that I can't specify max number of backup files when using time policy however I came across this issue https://issues.apache.org/jira/browse/LOG4J2-435 and this documentation fragment http://logging.apache.org/log4j/2.x/manual/appenders.html#CustomDeleteOnRollover that describes how to delete files based on their age and name pattern. Now I'm trying to apply this configuration in simple example that will create new backup file every minute and will automatically delete files that are older then 3 minutes. To do this I created simple maven project with following pom:<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>test</groupId> <artifactId>test</artifactId> <version>1.0-SNAPSHOT</version> <dependencies> <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-api</artifactId> <version>2.5</version> </dependency> <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-core</artifactId> <version>2.5</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> <executions> <execution> <id>copy-dependencies</id> <phase>prepare-package</phase> <goals> <goal>copy-dependencies</goal> </goals> <configuration> <outputDirectory>${project.build.directory}/lib</outputDirectory> <overWriteReleases>false</overWriteReleases> <overWriteSnapshots>false</overWriteSnapshots> <overWriteIfNewer>true</overWriteIfNewer> </configuration> </execution> </executions> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <configuration> <archive> <manifest> <addClasspath>true</addClasspath> <classpathPrefix>lib/</classpathPrefix> <mainClass>test.Main</mainClass> </manifest> </archive> </configuration> </plugin> </plugins> </build></project> log4j2.xml配置文件：log4j2.xml config file:<?xml version="1.0" encoding="UTF-8"?><Configuration status="warn" name="MyApp" packages=""> <Appenders> <RollingFile name="RollingFile" fileName="D:/app.log" filePattern="D:/app-%d{yyyy-MM-dd-HH-mm-ss}.log"> <PatternLayout> <Pattern>%d %p %c{1.} [%t] %m%n</Pattern> </PatternLayout> <Policies> <TimeBasedTriggeringPolicy interval="60" modulate="true"/> <!--<SizeBasedTriggeringPolicy size="250 MB"/>--> </Policies> <DefaultRolloverStrategy> <Delete basePath="D:" maxDepth="1"> <IfFileName glob="app-*.log" /> <IfLastModified age="3m" /> </Delete> </DefaultRolloverStrategy> </RollingFile> </Appenders> <Loggers> <Root level="trace"> <AppenderRef ref="RollingFile"/> </Root> </Loggers></Configuration>和主要类别：package test;import org.apache.logging.log4j.LogManager;import org.apache.logging.log4j.Logger;/** * Created by mzurawski on 2015-12-22. */public class Main { final static Logger logger = LogManager.getLogger(Main.class); public static void main(String[] args) { runMe("test"); } private static void runMe(String parameterParam){ String parameter; for(int i=0; i<100; ++i) { parameter = parameterParam + i; System.out.println("log iteration: "+i); if (logger.isDebugEnabled()) { logger.debug("This is debug : " + parameter); } if (logger.isInfoEnabled()) { logger.info("This is info : " + parameter); } logger.warn("This is warn : " + parameter); logger.error("This is error : " + parameter); logger.fatal("This is fatal : " + parameter); try { Thread.sleep(60000); } catch (InterruptedException e) { e.printStackTrace(); } } }}之后构建此程序，您可以使用以下命令运行它（注意硬编码的光盘位置）：after building this program you can run it with following command (watch out for hard coded disc locations):java -jar test-1.0-SNAPSHOT.jar到目前为止，每分钟都会创建日志文件，但不会删除任何旧文件。如何使此测试配置生效？我该如何修改此配置，以便最终只保留过去30天内的文件？So far the log files are created every minute but no old files are being deleted. How can I get this test configuration to work? How should I modify this configuration so that ultimately only files from last 30 days will be kept?感谢您的帮助。推荐答案您的配置和测试程序看起来很好。我测试了你的Main.java和log4j2.xml配置，它按预期工作：触发翻转的每一分钟，删除操作扫描基目录并只删除超过3分钟的文件。Your configuration and test program look fine. I tested your Main.java and log4j2.xml configuration and it works as expected: every minute the rollover is triggered, the Delete action scans the base directory and deletes only files older than 3 minutes.我没有创建一个独立的应用程序，而是在我的IDE中进行了测试。 （看起来你正在将log4j jar文件以及你的类和配置着色到一个jar中。这会导致问题吗？）I did not create a standalone app, but tested in my IDE instead. (Looks like you are shading the log4j jar files and your class and config into a single jar. Could that cause the issue?)通过更改后启用log4j内部日志记录后配置为<配置状态=TRACE... ，我得到以下输出：After enabling log4j internal logging by changing the config to <Configuration status="TRACE" ..., I get the following output: 迭代3：尚未删除任何文件：最旧的文件为173秒。 迭代4：删除最旧的文件。 ...（省略启动日志）... ... (startup log omitted)...log iteration: 32016-01-16 14:26:23,192 main TRACE PatternProcessor.getNextTime returning 2016/01/16-14:27:00.000, nextFileTime=2016/01/16-14:26:59.000, prevFileTime=2016/01/16-14:25:59.000, current=2016/01/16-14:26:23.192, freq=EVERY_SECOND2016-01-16 14:26:23,193 main TRACE DefaultRolloverStrategy.purge() took 0.0 milliseconds2016-01-16 14:26:23,194 main DEBUG RollingFileManager executing synchronous FileRenameAction[c:\temp\log\app.log to c:\temp\log\app-2016-01-16-14-25-59.log, renameEmptyFiles=false]2016-01-16 14:26:23,198 main DEBUG RollingFileManager executing async CompositeAction[DeleteAction[basePath=c:\temp\log, options=[], maxDepth=1, conditions=[IfFileName(glob:app-*.log), IfLastModified(age=PT3M)]]]2016-01-16 14:26:23,199 Log4j2-2 DEBUG Starting DeleteAction[basePath=c:\temp\log, options=[], maxDepth=1, conditions=[IfFileName(glob:app-*.log), IfLastModified(age=PT3M)]]2016-01-16 14:26:23,200 Log4j2-2 DEBUG DeleteAction complete in 0.001186309 seconds2016-01-16 14:26:23,201 Log4j2-2 TRACE Sorted paths:2016-01-16 14:26:23,201 Log4j2-2 TRACE c:\temp\log\app.log (modified: 2016-01-16T05:26:23.199631Z)2016-01-16 14:26:23,201 Log4j2-2 TRACE c:\temp\log\app-2016-01-16-14-25-59.log (modified: 2016-01-16T05:25:30.832634Z)2016-01-16 14:26:23,203 Log4j2-2 TRACE c:\temp\log\app-2016-01-16-14-24-59.log (modified: 2016-01-16T05:25:23.188525Z)2016-01-16 14:26:23,203 Log4j2-2 TRACE c:\temp\log\app-2016-01-16-14-23-59.log (modified: 2016-01-16T05:23:29.466887Z)2016-01-16 14:26:23,204 Log4j2-2 TRACE IfFileName REJECTED: 'glob:app-*.log' does not match relative path 'app.log'2016-01-16 14:26:23,204 Log4j2-2 TRACE Not deleting base=c:\temp\log, relative=app.log2016-01-16 14:26:23,205 Log4j2-2 TRACE IfFileName ACCEPTED: 'glob:app-*.log' matches relative path 'app-2016-01-16-14-25-59.log'2016-01-16 14:26:23,205 Log4j2-2 TRACE IfLastModified REJECTED: app-2016-01-16-14-25-59.log ageMillis '52373' < 'PT3M'2016-01-16 14:26:23,205 Log4j2-2 TRACE Not deleting base=c:\temp\log, relative=app-2016-01-16-14-25-59.log2016-01-16 14:26:23,206 Log4j2-2 TRACE IfFileName ACCEPTED: 'glob:app-*.log' matches relative path 'app-2016-01-16-14-24-59.log'2016-01-16 14:26:23,206 Log4j2-2 TRACE IfLastModified REJECTED: app-2016-01-16-14-24-59.log ageMillis '60018' < 'PT3M'2016-01-16 14:26:23,206 Log4j2-2 TRACE Not deleting base=c:\temp\log, relative=app-2016-01-16-14-24-59.log2016-01-16 14:26:23,206 Log4j2-2 TRACE IfFileName ACCEPTED: 'glob:app-*.log' matches relative path 'app-2016-01-16-14-23-59.log'2016-01-16 14:26:23,207 Log4j2-2 TRACE IfLastModified REJECTED: app-2016-01-16-14-23-59.log ageMillis '173740' < 'PT3M'2016-01-16 14:26:23,207 Log4j2-2 TRACE Not deleting base=c:\temp\log, relative=app-2016-01-16-14-23-59.loglog iteration: 42016-01-16 14:27:23,200 main TRACE PatternProcessor.getNextTime returning 2016/01/16-14:28:00.000, nextFileTime=2016/01/16-14:27:59.000, prevFileTime=2016/01/16-14:26:59.000, current=2016/01/16-14:27:23.200, freq=EVERY_SECOND2016-01-16 14:27:23,201 main TRACE DefaultRolloverStrategy.purge() took 0.0 milliseconds2016-01-16 14:27:23,202 main DEBUG RollingFileManager executing synchronous FileRenameAction[c:\temp\log\app.log to c:\temp\log\app-2016-01-16-14-26-59.log, renameEmptyFiles=false]2016-01-16 14:27:23,204 main DEBUG RollingFileManager executing async CompositeAction[DeleteAction[basePath=c:\temp\log, options=[], maxDepth=1, conditions=[IfFileName(glob:app-*.log), IfLastModified(age=PT3M)]]]2016-01-16 14:27:23,205 Log4j2-3 DEBUG Starting DeleteAction[basePath=c:\temp\log, options=[], maxDepth=1, conditions=[IfFileName(glob:app-*.log), IfLastModified(age=PT3M)]]2016-01-16 14:27:23,207 Log4j2-3 DEBUG DeleteAction complete in 0.001230382 seconds2016-01-16 14:27:23,207 Log4j2-3 TRACE Sorted paths:2016-01-16 14:27:23,207 Log4j2-3 TRACE c:\temp\log\app.log (modified: 2016-01-16T05:27:23.20571Z)2016-01-16 14:27:23,208 Log4j2-3 TRACE c:\temp\log\app-2016-01-16-14-26-59.log (modified: 2016-01-16T05:26:23.946671Z)2016-01-16 14:27:23,208 Log4j2-3 TRACE c:\temp\log\app-2016-01-16-14-25-59.log (modified: 2016-01-16T05:25:30.832634Z)2016-01-16 14:27:23,209 Log4j2-3 TRACE c:\temp\log\app-2016-01-16-14-24-59.log (modified: 2016-01-16T05:25:23.188525Z)2016-01-16 14:27:23,209 Log4j2-3 TRACE c:\temp\log\app-2016-01-16-14-23-59.log (modified: 2016-01-16T05:23:29.466887Z)2016-01-16 14:27:23,210 Log4j2-3 TRACE IfFileName REJECTED: 'glob:app-*.log' does not match relative path 'app.log'2016-01-16 14:27:23,210 Log4j2-3 TRACE Not deleting base=c:\temp\log, relative=app.log2016-01-16 14:27:23,211 Log4j2-3 TRACE IfFileName ACCEPTED: 'glob:app-*.log' matches relative path 'app-2016-01-16-14-26-59.log'2016-01-16 14:27:23,211 Log4j2-3 TRACE IfLastModified REJECTED: app-2016-01-16-14-26-59.log ageMillis '59265' < 'PT3M'2016-01-16 14:27:23,211 Log4j2-3 TRACE Not deleting base=c:\temp\log, relative=app-2016-01-16-14-26-59.log2016-01-16 14:27:23,212 Log4j2-3 TRACE IfFileName ACCEPTED: 'glob:app-*.log' matches relative path 'app-2016-01-16-14-25-59.log'2016-01-16 14:27:23,212 Log4j2-3 TRACE IfLastModified REJECTED: app-2016-01-16-14-25-59.log ageMillis '112380' < 'PT3M'2016-01-16 14:27:23,212 Log4j2-3 TRACE Not deleting base=c:\temp\log, relative=app-2016-01-16-14-25-59.log2016-01-16 14:27:23,213 Log4j2-3 TRACE IfFileName ACCEPTED: 'glob:app-*.log' matches relative path 'app-2016-01-16-14-24-59.log'2016-01-16 14:27:23,213 Log4j2-3 TRACE IfLastModified REJECTED: app-2016-01-16-14-24-59.log ageMillis '120025' < 'PT3M'2016-01-16 14:27:23,213 Log4j2-3 TRACE Not deleting base=c:\temp\log, relative=app-2016-01-16-14-24-59.log2016-01-16 14:27:23,214 Log4j2-3 TRACE IfFileName ACCEPTED: 'glob:app-*.log' matches relative path 'app-2016-01-16-14-23-59.log'2016-01-16 14:27:23,214 Log4j2-3 TRACE IfLastModified ACCEPTED: app-2016-01-16-14-23-59.log ageMillis '233748' >= 'PT3M'2016-01-16 14:27:23,214 Log4j2-3 TRACE Deleting c:\temp\log\app-2016-01-16-14-23-59.log您能启用状态记录并显示输出吗？Can you enable status logging and show your output? 这篇关于Log4j2 - 配置RolloverStrategy以删除旧的日志文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！