如何创建滚动日志文件

Question

我好像拿不到滚动日志文件。

我的logback.xml配置有以下内容：

<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
        <pattern>%date %level %thread %X{jobid} %logger{20}.%method\(%line\) %msg%n</pattern>
    </encoder>
</appender>

<appender name="SIFT" class="ch.qos.logback.classic.sift.SiftingAppender">
    <discriminator>
        <key>logFileName</key>
        <defaultValue>unknown</defaultValue>
    </discriminator>
    <sift>
        <appender name="FILE-${logFileName}" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <file>${catalina.base}/logs/${logFileName}.log</file>
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                <fileNamePattern>${catalina.base}/logs/${logFileName}_%d{yyyy-MM-dd_HH-mm}.%i.log</fileNamePattern>
                <maxHistory>30</maxHistory>
            </rollingPolicy>
            <encoder>
                <pattern>%date %level %thread %X{jobid} %logger{20}.%method\(%line\) %msg%n</pattern>
            </encoder>
        </appender>
    </sift>
</appender>


<root level="INFO">
    <appender-ref ref="STDOUT" />
    <appender-ref ref="SIFT" />
</root>

有意思。SIFT中“unknown.log”文件中的条目在分钟的停止处停止。之后，不会向SIFT文件写入任何内容，但我一直在catalina.out中获取条目：

2015-12-09 16:31:22,269 INFO Thread1 RlQti5b0QYybZvRuHi/m c.l.l.w.Worker.consumeMessage(51) Rcvd: job.complete.
2015-12-09 16:31:49,654 INFO Thread1 mY0E7sV7QZyTRZAw9UwV c.l.l.w.Worker.consumeMessage(51) Rcvd: job.complete.
2015-12-09 16:31:51,812 INFO Thread1 WWjuyzH+RmCa35JcxRJy c.l.l.w.Worker.consumeMessage(51) Rcvd: job.complete.
2015-12-09 16:31:58,977 INFO Thread1 jUdqB1DaQ8KxajDFk6jN c.l.l.w.Worker.consumeMessage(51) Rcvd: job.complete.

Answer 1

只是一个猜测，但-可能是因为你没有记录任何东西。他们就那么“懒”。