4-log4j2之切分日志文件

一、添加maven依赖

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

二、日志配置文件log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN">
    <properties>
        <Property name="console-pattern">%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] [%level] %logger{36} - %msg%n</Property>
        <property name="error-file">log4j2learn</property>
    </properties>
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="${console-pattern}" />
        </Console>

        <RollingRandomAccessFile name="RollingRandomAccessFile" fileName="${error-file}" filePattern="${error-file}-%d{yyyy-MM-dd HH:mm}-%i.log">
            <PatternLayout pattern="${console-pattern}" />
            <Policies>
                <TimeBasedTriggeringPolicy interval="1"/>
                                <!-- 相隔多长时间创建一个新文件，与RollingRandomAccessFile节点的filePattern保持一致，在这个实例中最小时间单位为mm，故每隔1分钟生成一个新日志文件-->
                <!-- 超出10kb则另外创建一个新文件保存-->
                <SizeBasedTriggeringPolicy size="10 KB" />
            </Policies>
        </RollingRandomAccessFile>
        <Async name="RollingRandomAppender">
            <AppenderRef ref="RollingRandomAccessFile" />
        </Async>
    </Appenders>

    <Loggers>
        <Root level="info">
            <AppenderRef ref="Console" />
            <appenderRef ref="AsyncAppender" />
        </Root>
        <Logger name="RandomAccessFileLogger" level="error">
            <appenderRef ref="RollingRandomAppender" />
        </Logger>
    </Loggers>

</Configuration>

三、测试代码

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

/**
 * @author : zhangyanqing
 * @time : 2017/12/9
 * @desc : ${DESCRIPTION}
 */
public class RandomAccessLoggerTest {
    public static final Logger LOGGER = LogManager.getLogger("RandomAccessFileLogger");

    public static void main(String[] args){
        for (int i = 0; i< 50000; i++){
            LOGGER.trace("trace level");
            LOGGER.debug("debug level");
            LOGGER.info("info level");
            LOGGER.warn("warn level");
            LOGGER.error("error level");
            LOGGER.fatal("fatal level");
        }
    }
}