我正在尝试配置一个log4j2
配置通过线程名将消息路由到多线程程序的不同日志文件。
到目前为止,这是我所拥有的(与 log4j2 配置相关):
|-/src/main/java/log4j2/plugins
|-- ThreadLookup.java
|-/src/main/resources
|-- log4j2.xml
ThreadLookup.java:
package log4j2.plugins;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.lookup.StrLookup;
@Plugin(name="threadLookup", category=StrLookup.CATEGORY)
public class ThreadLookup implements StrLookup {
@Override
public String lookup(String key) {
return Thread.currentThread().getName();
}
@Override
public String lookup(LogEvent event, String key) {
// Check event first:
if (event.getThreadName() != null) {
return event.getThreadName();
}
// Fallback to key if event doesn't define a threadName:
return this.lookup(key);
}
}
Log4j2.xml(据我了解,packages
的属性Configuration
应该读入ThreadLookup.java
并根据注释创建一个新的threadLookup
让我打电话的前缀lookup(String key)
无论我想要什么值——在这种情况下,我没有使用特定值,因为此类只会执行 threadName 查找):
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="error" strict="true" schema="Log4J-V2.0.xsd"
packages="log4j2.plugins">
<Properties>
<Property name="logMsgPattern">%date{yyyy/MM/dd HH:mm:ss.SSS} %-5level ${sys:pid}[%thread] %class %method:%line - %message%n</Property>
</Properties>
<Appenders>
<Console name="console" target="SYSTEM_OUT" >
<PatternLayout pattern="${logMsgPattern}" />
</Console>
<Routing name="routing">
<Routes pattern="$${threadLookup:threadName}">
<Route>
<RollingFile name="RollingFile-${threadLookup:threadName}"
fileName="${sys:log4j.dir}/thread-${threadLookup:threadName}.log"
filePattern="${sys:log4j.dir}/thread-${threadLookup:threadName}-%i.log.gz">
<PatternLayout pattern="${logMsgPattern}"/>
<Policies>
<SizeBasedTriggeringPolicy size="100 MB" />
</Policies>
</RollingFile>
</Route>
</Routes>
</Routing>
<!-- Config for other appenders snipped -->
</Appenders>
<Loggers>
<!-- Config for other loggers snipped -->
<Root level="${sys:log4j.console.threshold}">
<AppenderRef ref="rootOut" level="trace" />
<AppenderRef ref="rootErr" level="error" />
<AppenderRef ref="console" level="${sys:log4j.console.threshold}" />
<AppenderRef ref="routing" level="trace" />
</Root>
</Loggers>
</Configuration>
但是,当我启动我的应用程序时,它只会创建一个名为的附加文件thread-${threadLookup
(无扩展名)在我的日志目录中。它也永远不会遇到任何断点ThreadLookup.java
.
如何使用 log4j2 注册插件(我使用的是版本2.2
,我也尝试过2.3
)?请注意,我正在使用spring-framework 4.1.7
项目,如果有帮助的话;我用maven
对于该项目也是如此,但我仅使用它来解决依赖关系,我通过构建项目ant
script.
UPDATE
当我通过 ant 构建脚本时,我实际上得到了一个 Log4j2Plugins.dat,它显示在我的类路径中(-cp resources:bin
),但它似乎不会影响服务器上生成的日志的结果:
$ find bin/META-INF/ -type f
bin/META-INF/org/apache/logging/log4j/core/config/plugins/Log4j2Plugins.dat
$ cat bin/META-INF/org/apache/logging/log4j/core/config/plugins/Log4j2Plugins.dat
lookup
threadlookupog4j2.plugins.ThreadLookup
threadLookup
$ vi bin/META-INF/org/apache/logging/log4j/core/config/plugins/Log4j2Plugins.dat
^A^Flookup^A^Lthreadlookup^[log4j2.plugins.ThreadLookup^LthreadLookup
$ find logs -type f -name "thread-*"
logs/thread-${threadLookup:threadName}.log
logs/thread-${threadLookup:threadName}-1.log.gz</pre>
Thanks