java - Log4j2:没有可用的 log4j-web 模块

Question

我试图将我的配置的状态级别设置为“信息”，但我得到以下输出:

INFO Log4j appears to be running in a Servlet environment, but there's no log4j-web module available. If you want better web container support, please add the log4j-web JAR to your web archive or server lib directory.

我的 log4j2.xml 有以下内容

    <?xml version="1.0" encoding="UTF-8"?>
<Configuration status="info" packages="org.graylog2.log4j2">
    <Properties>
        <Property name="default_pattern">%d{MM/dd/yyyy hh:mm:ss} %5p %c{1} - %m%n</Property>
    </Properties>

    <!--  LOG4J2 APPENDERS -->
    <Appenders>
        <Console name="console" target="SYSTEM_OUT">
            <PatternLayout pattern="${default_pattern}"/>
        </Console>
        <Console name="com.sum.exam" target="SYSTEM_OUT">
            <PatternLayout pattern="${default_pattern}"/>                            
        </Console>
        <Console name="auth" target="SYSTEM_OUT">
            <PatternLayout pattern="${default_pattern}"/>                            
        </Console>
        <Console name="com.d.e" target="SYSTEM_OUT">
            <PatternLayout pattern="${default_pattern}"/>                            
        </Console>
        <Console name="com.google.gson" target="SYSTEM_OUT">
            <PatternLayout pattern="${default_pattern}"/>                            
        </Console>
        <Console name="org.elasticsearch" target="SYSTEM_OUT">
            <PatternLayout pattern="${default_pattern}"/>                            
        </Console>
        <Console name="com.datamotion.direct" target="SYSTEM_OUT">
            <PatternLayout pattern="${default_pattern}"/>                            
        </Console>
        <NullAppender name="null">
            <PatternLayout pattern="${default_pattern}"/> 
        </NullAppender>

        <!-- GELFJ CONFIGURATION -->
        <GELF   name="gelfAppender" 
                server="org.graylog2.log.GelfAppender" 
                port="12201"
                hostName="logs.x.d.com" 
                facility="GELF-JAVA"
                additionalFields="{'\u2018environment\u2019\': '\u2018EHR\u2019'}"
                extractStacktrace="true"
                addExtendedInformation="true">
            <PatternLayout pattern="${default_pattern}"/>
            <Root level="info">
                <AppenderRef ref="gelfAppender" level="info"/>
            </Root>
        </GELF>
    </Appenders>

    <!-- LOG4J2 CONFIGURATION -->
    <Loggers>
        <Root level="error" additivity="false" />

        <Logger name="console" level="info">
            <AppenderRef ref="console" />
        </Logger>
        <Logger name="com.sum.exam" level="debug" additivity="false">
            <AppenderRef ref="com.sum.exam" />
        </Logger>
        <Logger name="auth" level="debug" additivity="false">
            <AppenderRef ref="auth" />
        </Logger>
        <Logger name="com.d.e" level="debug" additivity="false">
            <AppenderRef ref="com.d.e" />
        </Logger>
        <Logger name="com.google.gson" level="info">
            <AppenderRef ref="com.google.gson" />
        </Logger>
        <Logger name="org.elasticsearch" level="info">
            <AppenderRef ref="org.elasticsearch" />
        </Logger>
        <Logger name="com.datamotion.direct" level="debug" additivity="false">
            <AppenderRef ref="com.datamotion.direct" />
        </Logger>
    </Loggers>

</Configuration>

我已经下载了 log4j-web-2.6.2.jar文件并将其添加到我的类路径中，但由于某种原因我仍然得到相同的输出。我做错了什么？我能够输出 DEBUG 状态级别，但不能输出 INFO，这很奇怪。

Answer 1

起初，我认为问题是因为我的类路径中有我需要的 servlet-api jar，但删除它并没有解决问题，对我来说。最后，我所要做的就是添加来自 mvnrepository 的 log4 web jar 文件。到你的类路径，你就设置好了!