java 如何将日期时间戳添加到 log4j2 日志文件？
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How to add the date timestamp to log4j2 logfiles?
提问by membersound
I want to create day dependent logfiles with log4j2:
我想创建与日相关的日志文件log4j2：
<RollingFile name="APP" fileName="application-%d{yyyy-MM-dd}.log" />
Resulting logfile name: application-%d{yyyy-MM-dd}.log, the timestamp is not replaced. Why?
结果日志文件名：application-%d{yyyy-MM-dd}.log，时间戳不被替换。为什么？
采纳答案by Loganathan Mohanraj
The pattern should not be given in the attribute "fileName" rather you have to specify the pattern in the attribute "filePattern" as like below.
模式不应在属性“fileName”中给出，而必须在属性“filePattern”中指定模式，如下所示。
<RollingFile name="RollingFile" fileName="${log-path}/filename.log"
filePattern="${log-path}/filename-%d{yyyy-MM-dd}-%i.log" >
...
...
</RollingFile>
The "%i" is the counter that will be automatically incremented in rollover.
“%i”是将在翻转时自动递增的计数器。
Hope this will help you.
希望这会帮助你。
回答by Bishal Gupta
To append the filename with date, replace %d with below format, i was having the same problem and but got by doing so :
要用日期附加文件名，用以下格式替换 %d，我遇到了同样的问题，但这样做了：
<RollingFile name="APP" fileName="application-${date:yyyy-MM-dd}.log" />
回答by Gre?anu Emanuel - Vasile
Try this:
试试这个：
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="warn" name="MyApp" packages="">
<Properties>
<Property name="log-path">D:/logs/</Property>
</Properties>
<Appenders>
<RollingFile name="DebuggerLogger" fileName="${log-path}CMSAutomation.${date:yyyy-MM-dd_hh-mm-ss}.log" filePattern="${log-path}/$${date:yyyy-MM}/app-%d{MM-dd-yyyy}-%i.log.gz">
<PatternLayout>
<Pattern>%d %p %c{1.} [%t] %m%n</Pattern>
</PatternLayout>
<Policies>
<TimeBasedTriggeringPolicy />
<SizeBasedTriggeringPolicy size="10 MB" />
</Policies>
</RollingFile>
</Appenders>
<Loggers>
<Root level="ALL">
<AppenderRef ref="DebuggerLogger"/>
</Root>
</Loggers>
</Configuration>
回答by Ali
Use ASizeBasedTriggeringPolicyclass in appender.
You can even append the current second to the logfile name. %d{yyyy_MM_dd HH.mm.ss}
ASizeBasedTriggeringPolicy在 appender 中使用class。您甚至可以将当前秒附加到日志文件名。%d{yyyy_MM_dd HH.mm.ss}
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.appender.rolling.*;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
import org.apache.logging.log4j.core.config.plugins.PluginFactory;
@Plugin(name = "ASizeBasedTriggeringPolicy",
category = "Core",
printObject = true
)
public class ASizeBasedTriggeringPolicy extends AbstractTriggeringPolicy {
private SizeBasedTriggeringPolicy sizeBasedTriggeringPolicy;
private RollingFileManager aManager;
protected ASizeBasedTriggeringPolicy(String maxFileSize) {
sizeBasedTriggeringPolicy = SizeBasedTriggeringPolicy.createPolicy(maxFileSize);
}
public void initialize(RollingFileManager aManager) {
sizeBasedTriggeringPolicy.initialize(aManager);
this.aManager = aManager;
}
public boolean isTriggeringEvent(LogEvent event) {
if (sizeBasedTriggeringPolicy.isTriggeringEvent(event)) {
aManager.getPatternProcessor().setPrevFileTime(System.currentTimeMillis());
return true;
} else {
return false;
}
}
@PluginFactory
public static ASizeBasedTriggeringPolicy createPolicy(@PluginAttribute("size") String size) {
return new ASizeBasedTriggeringPolicy(size);
}
}
Then use ASizeBasedTriggeringPolicyin log appender
然后ASizeBasedTriggeringPolicy在日志追加器中使用
<RollingFile name="complete-log" fileName="${log-path}/complete-${date:yyyy_MM_dd HH.mm.ss} .log"
filePattern="${log-path}/app-complete-%d{yyyy_MM_dd HH.mm.ss} - %i.log" >
...
...
<Policies>
<ASizeBasedTriggeringPolicy size="200 kB" />
</Policies>
</RollingFile>
回答by Alferd Nobel
In yaml check the Property filePatterndefined as "${date:yyyy-MM-dd}", which helps to tag the date. If you are interested to tag the HOSTNAMEenvironment variable to date then : "${env:HOST}-${date:yyyy-MM-dd}"
在 yaml 中检查filePattern定义为的属性"${date:yyyy-MM-dd}"，这有助于标记日期。如果您有兴趣将HOSTNAME环境变量标记为最新，则："${env:HOST}-${date:yyyy-MM-dd}"
Properties:
Property:
- name: log-path
value: "logs"
- name: filePattern
value: "${date:yyyy-MM-dd}"
Appenders:
Console:
name: Console_Appender
target: SYSTEM_OUT
PatternLayout:
pattern: "[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n"
File:
name: File_Appender
fileName: "${log-path}/filelog-${filePattern}.log"
PatternLayout:
pattern: "[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n"
RollingFile:
- name: RollingFile_Appender
fileName: "${log-path}/rollingfile-${filePattern}.log"
filePattern: "logs/archive/rollingfile.log.%d{yyyy-MM-dd-hh-mm}.gz"
PatternLayout:
pattern: "[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n"
