log4j2：pattern不包含日期

Question

I'm trying to migrate to log4j2 and I'm getting an java.lang.IllegalStateException: "Pattern does not contain a date."

I have a filePattern setup for each RollingFile so I'm unsure what I'm doing wrong. FYI, I'm running through Tomcat on Eclipse (Kepler).

Here is my log4j2.xml:

<?xml version="1.0" encoding="UTF-8"?>

<Configuration status="WARN">

    <Appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss,SSS} [%-5p] - %m%n" />
        </Console>

        <RollingFile name="RootFile" fileName="injunction.log" immediateFlush="false" append="false"
            filePattern="injunction.log.%d{yyyy-MM-dd}">
            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss,SSS} [%-5p] - %m%n"/>
            <Policies>
                <!--  Roll over the file to the next day -->
                <TimeBasedTriggeringPolicy />
            </Policies>
            <!--  Only keep up to 30 archived log files -->
            <DefaultRolloverStrategy max="30"/>
        </RollingFile>

        <RollingFile name="DBFile" fileName="db.log" immediateFlush="false" append="false"
            filePattern="db.log.%d{yyyy-MM-dd}">>
            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss,SSS} [%-5p] - %m%n"/>
            <Policies>
                <!--  Roll over the file to the next day -->
                <TimeBasedTriggeringPolicy />
            </Policies>
            <!--  Only keep up to 30 archived log files -->
            <DefaultRolloverStrategy max="30"/>
        </RollingFile>

    </Appenders>

    <Loggers>
        <Root level="debug">
            <AppenderRef ref="Console" />
            <AppenderRef ref="RootFile" />
        </Root>

        <Logger name="DBLogger" level="debug" additivity="false">
            <AppenderRef ref="Console" />
            <AppenderRef ref="DBFile" />
        </Logger>
    </Loggers>

</Configuration>

Answer 1

TimeBasedTriggeringPolicy需要日期来确定文件翻转的频率

Answer 2

This problem appeared to fix itself. I moved the log4j2.xml to the top of Eclipse's src directory and that did the trick.