如何在Play框架中的文件中记录数据？

Question

我有一个用Java实现的Play服务器(Play框架2.3).我想在文件中保留API调用的日志,限制文件的最大数量和每个文件的最大大小.我有以下application-logger.xml文件

<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>/home/ajay/projects/application.log</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
        <!-- Daily rollover with compression -->
        <fileNamePattern>application-log-%d{yyyy-MM-dd}.gz</fileNamePattern>
        <!-- keep 30 days worth of history -->
        <maxHistory>30</maxHistory>
    </rollingPolicy>
    <encoder>
        <pattern>%date{yyyy-MM-dd HH:mm:ss ZZZZ} - [%level] - from %logger in %thread %n%message%n%xException%n</pattern>
    </encoder>
</appender>

<appender name="ACCESS_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>/home/ajay/projects/access.log</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
        <!-- daily rollover with compression -->
        <fileNamePattern>access-log-%d{yyyy-MM-dd}.gz</fileNamePattern>
        <!-- keep 1 week worth of history -->
        <maxHistory>7</maxHistory>
    </rollingPolicy>
    <encoder>
        <pattern>%date{yyyy-MM-dd HH:mm:ss ZZZZ} %message%n</pattern>
        <!-- this quadruples logging throughput -->
        <immediateFlush>false</immediateFlush>
    </encoder>
</appender>

<!-- additivity=false ensures access log data only goes to the access log -->
<logger name="access" level="INFO" additivity="false">
    <appender-ref ref="ACCESS_FILE" />
</logger>

<root level="INFO">
    <appender-ref ref="FILE"/>
</root>

我从这里拿走了.我不完全理解上面的配置.我使用以下行登录到access.log文件

import play.Logger;

// log in the access.log file
final Logger.ALogger accessLogger = Logger.of("access");
accessLogger.info("Logging api call from the client");

但是,它不起作用.access.log所有日志记录都转到application.log文件时该文件为空.我已经注释掉了所有记录器设置application.conf.当我查看文件时Logger.class,我发现了这一行

private static final ALogger logger = of("application");

这是它不起作用的原因吗？请建议我如何解决它.

Answer 1

试试这个附加器：

 <appender name="CUSTOM" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${application.home}/logs/agent.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${application.home}/logs/old/myLog-%d{yyyy-MM-dd}.log.%i</fileNamePattern>
            <maxHistory>30</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>100MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
        <encoder>
            <pattern>%date %M  %logger{0} %message%n</pattern>
        </encoder>
    </appender>

在文件名模式中放置应用程序主路径。