日志回滚扫描不起作用

debugging java logback

2022-09-04 08:28:04

我在使日志的自动扫描功能正常工作时遇到问题。它似乎没有拾取变化。我已经将debug=“true”添加到部分并读取其输出，一切似乎都很好。它清楚地表明，logback.xml文件每30秒就会受到一次监视更改。我不知道为什么变化没有被拾起。只是在寻找一些关于如何进一步解决此问题的指导。谢谢。

我应该提到，logback正在记录到文件中，只是对logback配置文件的更改没有被拾取。

日志返回.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="30 seconds" debug="true">

    <statusListener class="ch.qos.logback.core.status.OnConsoleStatusListener" />  

    <property name="LOGS_PATH" value="C:\\Users\\****\\Desktop\\css_dev\\q_logs" />

    <appender name="scheduledTasksAppender" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${LOGS_PATH}/scheduledTasks.log</file>

        <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
            <fileNamePattern>${LOGS_PATH}/scheduledTasks.%i.log.zip</fileNamePattern>
            <minIndex>1</minIndex>
            <maxIndex>25</maxIndex>
        </rollingPolicy>

        <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
            <maxFileSize>5MB</maxFileSize>
        </triggeringPolicy>

        <encoder>
            <pattern>%d{MMM/dd/yyyy HH:mm:ss} %-5level %logger{50} - %msg%n</pattern>
        </encoder>
    </appender>

    <logger name="tasks" level="warn" additivity="false">
        <appender-ref ref="scheduledTasksAppender"/>
    </logger>
</configuration>

当 Web 应用程序启动时，输出到 Tomcat 日志：

|-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy]
|-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
|-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at [file:/C:/Users/*****/Desktop/css_dev/ProjectQ/build/web/WEB-INF/classes/logback.xml]
|-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Setting ReconfigureOnChangeFilter scanning period to 30 seconds
|-INFO in ReconfigureOnChangeFilter{invocationCounter=0} - Will scan for changes in [[C:\Users\*****\Desktop\css_dev\ProjectQ\build\web\WEB-INF\classes\logback.xml]] every 30 seconds. 
|-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Adding ReconfigureOnChangeFilter as a turbo filter
|-INFO in ch.qos.logback.core.joran.action.StatusListenerAction - Added status listener of type [ch.qos.logback.core.status.OnConsoleStatusListener]
|-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy]
|-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
|-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at [file:/C:/Users/*****/Desktop/css_dev/ProjectQ/build/web/WEB-INF/classes/logback.xml]
|-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Setting ReconfigureOnChangeFilter scanning period to 30 seconds
|-INFO in ReconfigureOnChangeFilter{invocationCounter=0} - Will scan for changes in [[C:\Users\*****\Desktop\css_dev\ProjectQ\build\web\WEB-INF\classes\logback.xml]] every 30 seconds. 
|-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Adding ReconfigureOnChangeFilter as a turbo filter
|-INFO in ch.qos.logback.core.joran.action.StatusListenerAction - Added status listener of type [ch.qos.logback.core.status.OnConsoleStatusListener]
|-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.rolling.RollingFileAppender]
|-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.rolling.RollingFileAppender]
|-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [scheduledTasksAppender]
|-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [scheduledTasksAppender]
|-INFO in ch.qos.logback.core.rolling.FixedWindowRollingPolicy@298f464e - Will use zip compression
|-INFO in ch.qos.logback.core.rolling.FixedWindowRollingPolicy@298f464e - Will use zip compression
|-WARN in ch.qos.logback.core.rolling.FixedWindowRollingPolicy@298f464e - Large window sizes are not allowed.
|-WARN in ch.qos.logback.core.rolling.FixedWindowRollingPolicy@298f464e - Large window sizes are not allowed.
|-WARN in ch.qos.logback.core.rolling.FixedWindowRollingPolicy@298f464e - MaxIndex reduced to 21
|-WARN in ch.qos.logback.core.rolling.FixedWindowRollingPolicy@298f464e - MaxIndex reduced to 21
|-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
|-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
|-INFO in ch.qos.logback.core.rolling.RollingFileAppender[scheduledTasksAppender] - Active log file name: C:\Users\*****\Desktop\css_dev\q_logs/scheduledTasks.log
|-INFO in ch.qos.logback.core.rolling.RollingFileAppender[scheduledTasksAppender] - Active log file name: C:\Users\*****\Desktop\css_dev\q_logs/scheduledTasks.log
|-INFO in ch.qos.logback.core.rolling.RollingFileAppender[scheduledTasksAppender] - File property is set to [C:\Users\*****\Desktop\css_dev\q_logs/scheduledTasks.log]
|-INFO in ch.qos.logback.core.rolling.RollingFileAppender[scheduledTasksAppender] - File property is set to [C:\Users\*****\Desktop\css_dev\q_logs/scheduledTasks.log]
|-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [tasks] to WARN
|-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [tasks] to WARN
|-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting additivity of logger [tasks] to false
|-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting additivity of logger [tasks] to false
|-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [scheduledTasksAppender] to Logger[tasks]
|-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [scheduledTasksAppender] to Logger[tasks]
|-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
|-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
|-INFO in ch.qos.logback.classic.joran.JoranConfigurator@5b63e18f - Registering current configuration as safe fallback point
|-INFO in ch.qos.logback.classic.joran.JoranConfigurator@5b63e18f - Registering current configuration as safe fallback point

答案 1

更新（2019年5月）：该错误现在似乎已修复。

=============================================================================

对于 logback 1.1.7，需要明确提及。否则，日志将不会扫描更改。这是由于最近引入的错误（这是链接）。scanPeriod

答案 2

您回.xml似乎是正确的。

这是手册中所述的行为：http://logback.qos.ch/manual/configuration.html#autoScan，

鉴于每次调用任何记录器时都会调用 ReconfigureOnChangeFilter，无论记录器级别如何，ReconfigureOnChangeFilter 都是绝对性能关键的。如此之多，以至于实际上，检查扫描周期是否已经过去，本身就太昂贵了。为了提高性能，ReconfigureOnChangeFilter 实际上每 N 个日志记录操作“处于活动状态”一次。根据应用程序日志的频率，可以通过 logback 动态修改 N 的值。默认情况下，N 为 16，但对于 CPU 密集型应用程序，它可以高达 2^16 （= 65536）。

简而言之，当配置文件更改时，它将自动重新加载，但只有在多次记录器调用和扫描周期确定的延迟之后。

只需尝试记录更多消息，然后查看配置是否正确加载。

我希望这对你有所帮助。

此致敬意

米格尔