Log4j2：切换到“路由”后，自定义插件不起作用

ixM 发表于 Java

ixM：

我正在使用通过PluginManager类以编程方式注册的自定义插件，以在地图中加载值并根据地图的内容更改RollingFileAppender的fileName。

然后，我将配置更改为使用路由追加程序，以便能够使用ThreadContext内容进一步更改fileName（基本上，我希望每个应用程序线程都有一个日志文件）。

但是，由于我开始使用路由追加程序，所以我的自定义插件不再产生所需的结果，尽管我根本没有进行任何更改。基本上，它返回空值。

我的log4j2-configuration.xml看起来像这样：

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="debug">
    <Appenders>
        <Console name="STDOUT">
            <PatternLayout pattern="%m%n"/>
            <ThresholdFilter level="debug"/>
        </Console>

        <Routing name="contextSpecificAppender">
            <Routes pattern="$${ctx:threadName}">
                <!-- This route is chosen if ThreadContext has no value for key threadName -->
                <Route key="$${ctx:threadName}">
                    <RandomAccessFile
                        name="applicationAppender"
                        fileName="${sys:catalina.base}/logs/${propertymap:warName}.log"
                        filePattern="${sys:catalina.base}/logs/%d{yyyy-MM-dd}/${propertymap:warName}.%i.log"
                        append="true"
                    >
                        <PatternLayout>
                            <Pattern>%d{yyyy-MM-dd HH:mm:ss} %highlight{%p} %style{[%t]}{magenta} %style{%c{1}:%L}{cyan,bold} - %m%n</Pattern>
                        </PatternLayout>
                        <Policies>
                            <TimeBaseTriggeringPolicy />
                            <SizeBasedTriggeringPolicy size="100 MB" />
                        </Policies>
                        <DefaultRolloverStrategy max="1" />
                    </RandomAccessFile>
                </Route>
                <Route>
                    <RandomAccessFile
                        name="${ctx:threadName}"
                        fileName="${sys:catalina.base}/logs/${propertymap:warName}-${ctx:threadName}.log"
                        filePattern="${sys:catalina.base}/logs/%d{yyyy-MM-dd}/${propertymap:warName}-${ctx:threadName}.%i.log"
                        append="true"
                    >
                        <PatternLayout>
                            <Pattern>%d{yyyy-MM-dd HH:mm:ss} %highlight{%p} %style{[%t]}{magenta} %style{%c{1}:%L}{cyan,bold} - %m%n</Pattern>
                        </PatternLayout>
                        <Policies>
                            <TimeBaseTriggeringPolicy />
                            <SizeBasedTriggeringPolicy size="100 MB" />
                        </Policies>
                        <DefaultRolloverStrategy max="1" />
                    </RandomAccessFile>
                </Route>
            </Routes>
        </Routing>
    </Appenders>
    <Loggers>
        <Root level="debug">
            <AppenderRef ref="contextSpecificAppender" />
            <!--<AppenderRef ref="STDOUT"/>-->
        </Root>
        <Logger name="org.apache.axis2.enterprise" level="info">
            <AppenderRef ref="contextSpecificAppender" />
        </Logger>
        <Logger name="de.hunsicker.jalopy.io" level="fatal">
            <AppenderRef ref="contextSpecificAppender" />
        </Logger>
        <Logger name="httpclient.wire.header" level="fatal">
            <AppenderRef ref="contextSpecificAppender" />
        </Logger>
        <Logger name="org.apache.commons.httpclient" level="info">
            <AppenderRef ref="contextSpecificAppender" />
        </Logger>
    </Loggers>
</Configuration>

负责加载地图的类在此处：

package com.my.package;

import java.net.URISyntaxException;
import java.net.URL;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.core.LoggerContext;
import org.apache.logging.log4j.core.config.plugins.util.PluginManager;

/**
 *
 * @author ixm
 */
public class Log4jInitiliazer {
    public static void initialize(String warName, URL log4jProperties) {
        PropertyMapLookup.propertyMap.put("warName", warName);

        PluginManager.addPackage(PropertyMapLookup.class.getPackageName());

        LoggerContext context = (LoggerContext) LogManager.getContext(false);
        try {
            context.setConfigLocation(log4jProperties.toURI());
        } catch (URISyntaxException ex) {
            ex.printStackTrace();
        }
    }
}

它是从ServletContextListener调用的：

Log4jInitiliazer.initialize(warName, servletContextEvent.getServletContext().getResource("/WEB-INF/classes/log4j2-configuration.xml"));

最后，插件本身在这里：

package com.my.package;

import java.util.HashMap;
import java.util.Map;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.lookup.StrLookup;

/**
 *
 * @author ixm
 */
@Plugin(name="propertymap", category=StrLookup.CATEGORY)
public class PropertyMapLookup implements StrLookup {
    public static Map<String, String> propertyMap = new HashMap();

    @Override
    public String lookup(String arg0) {
        return propertyMap.getOrDefault(arg0, "");
    }

    @Override
    public String lookup(LogEvent arg0, String arg1) {
        return propertyMap.getOrDefault(arg0, "");
    }

}

生成的日志文件名称全为“ /var/log/tomcat9/-theNameOfTheThread.log”，而应改为“ /var/log/tomcat9/theNameOfTheWar-theNameOfTheThread.log”。

我尝试了几件事没有帮助：