log4j:ERROR尝试附加到名为[..]的已关闭的appender

Question

我在控制台上反复出现以下错误

log4j:ERROR Attempted to append to closed appender named [ConsoleAppender].
log4j:ERROR Attempted to append to closed appender named [FixedWindowRollingFile].

使用了log4j.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/" debug="false">
    <appender class="org.apache.log4j.rolling.RollingFileAppender" name="FixedWindowRollingFile">
        <param name="Append" value="true"/>
        <param name="ImmediateFlush" value="true"/>

        <rollingPolicy class="org.apache.log4j.rolling.FixedWindowRollingPolicy">
            <param name="fileNamePattern" value="logs/StandardizeAccountService.%i.log"/>
            <param name="minIndex" value="1"/>
            <param name="maxIndex" value="10"/>
        </rollingPolicy>
        <triggeringPolicy class="org.apache.log4j.rolling.SizeBasedTriggeringPolicy">
            <param name="MaxFileSize" value="1002400"/>
        </triggeringPolicy>
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss} %p %c{1}:%L - %m%n"/>
        </layout>
    </appender>

    <appender name="ConsoleAppender" class="org.apache.log4j.ConsoleAppender">
        <layout class="org.apache.log4j.SimpleLayout"/>
    </appender>

    <logger name="com.arosys" additivity="false" >
        <level value="INFO" />
        <appender-ref ref="ConsoleAppender" />
        <appender-ref ref="FixedWindowRollingFile"/>
    </logger>

    <root>
        <priority value="INFO"/>
        <appender-ref ref="ConsoleAppender"/>
        <appender-ref ref="FixedWindowRollingFile"/>
    </root>
</log4j:configuration>

请帮我解决问题所在.

Answer 1

我得到了同样的错误:

log4j:ERROR Attempted to append to closed appender named [rollingFileAppender].

在我的log4j.xml中

我有两个同名的记录器,如下所示

<logger name="java.sql.PreparedStatement" additivity="false">
    <level value="INFO"/>
    <appender-ref ref="rollingFileAppender"/>
</logger>

 <logger name="java.sql.PreparedStatement">
    <level value="INFO"/>
    <appender-ref ref="rollingFileAppender"/>
</logger>

我删除了副本,它工作.

Answer 2

我在这里回答了类似的问题:https://stackoverflow.com/a/9973283/340290

在我的例子中,我有两个Log4J可用的log4j.properties:一个通过将它放在类路径中而另一个通过编程方式(使用PropertyConfigurator.configure(..))加载.

在这两个文件中,我ConsoleAppender使用相同的名称注册stdout并使用相同的类别两次(每个属性文件一个).删除配置或属性文件解决了我的问题.

Answer 3

可以使用以下方法覆盖配置:

BasicConfigurator.resetConfiguration();
PropertyConfigurator.configure(props);