Log4J 2未写入文件 [英] Log4J 2 not writing into file

问题描述

我正在尝试使用log4j 2进行一些日志记录.控制台输出正常，但是当我尝试将一些日志写入文件时，我将无法对其进行管理.

I am trying to implement some logging using log4j 2. The console output is ok, but when I try to write some logs into file I cannot manage it.

我的pom.xml:

<dependencies>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>2.8</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.8</version>
        </dependency>
    </dependencies>

我的log4j2.xml:

<?xml version="1.0" encoding="UTF-8"?>
<Configuration monitorInterval="60">
    <Properties>
        <Property name="log-path">logs</Property>
        <Property name="archive">${log-path}/archive</Property>
    </Properties>
    <Appenders>
        <Console name="Console-Appender" target="SYSTEM_OUT">
            <PatternLayout>
                <pattern>
                    [%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n
                </pattern>>
            </PatternLayout>
        </Console>
        <File name="File" fileName="${log-path}/xmlfilelog.log" immediateFlush="true" >
            <PatternLayout>
                <pattern>
                    [%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n
                </pattern>
            </PatternLayout>
        </File>
    </Appenders>
    <Loggers>
        <Logger name="les.dam" level="trace">
            <AppenderRef ref="File" level="trace"/>
        </Logger>
        <Root level="trace">
            <AppenderRef ref="Console-Appender"/>
        </Root>
    </Loggers>
</Configuration>

我通过以下方式使用log4j:

I use log4j the following way:

private static Logger logger = LogManager.getLogger();
logger.debug("This is a debug message");
logger.info("This is an info message");
logger.warn("This is a warn message");
logger.error("This is an error message");
logger.fatal("This is a fatal message");

我使用记录器的类在les.dam包中.

The class where I use the logger is under les.dam package.

xml配置位于src/main/resources下.

The xml configuration is under src/main/resources.

logs文件夹与源文件夹处于同一级别.

The logs folder is at the same level as source folder.

推荐答案

您必须检查log4j2使用的是您提供的log4j2.xml，而不是默认配置.

You must check that log4j2 is using log4j2.xml which you provide, not default configuration.

1. 更改log4j2.xml.

配置status ="trace" monitorInterval ="60"

Configuration status="trace" monitorInterval="60"

然后检查控制台输出.

1. 更改控制台-Appender的PatternLayout.

％d {yyyy-MM-dd HH:mm:ss.SSS} [％-5level] [％t]％c {1}-％msg％n

%d{yyyy-MM-dd HH:mm:ss.SSS} [%-5level] [%t] %c{1} - %msg%n

然后检查控制台输出.

如果log4j使用log4j2.xml，请检查FileAppender配置 https://logging.apache.org/log4j/2. x/manual/appenders.html#FileAppender .

If log4j is using log4j2.xml, check FileAppender configuration https://logging.apache.org/log4j/2.x/manual/appenders.html#FileAppender.

如果log4j未使用log4j2.xml，请 https://logging.apache.org/log4j/2.x/manual/configuration.html . -Dlog4j.configurationFile = src/main/resources/log4j2.xml

If log4j is not using log4j2.xml, https://logging.apache.org/log4j/2.x/manual/configuration.html. -Dlog4j.configurationFile=src/main/resources/log4j2.xml

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