1、pom

<groupId>com.zhonglv</groupId>
<artifactId>log4j2_demo</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
    <!--使用slf4j 作为日志门面-->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.26</version>
    </dependency>
    <!--使用 log4j2 的适配器进行绑定-->
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-slf4j-impl</artifactId>
        <version>2.9.1</version>
    </dependency>
    <!--log4j2日志门面-->
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-api</artifactId>
        <version>2.11.1</version>
    </dependency>
    <!--log4j2 日志实现-->
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-core</artifactId>
        <version>2.11.1</version>
    </dependency>
    <!--异步日志依赖-->
    <dependency>
        <groupId>com.lmax</groupId>
        <artifactId>disruptor</artifactId>
        <version>3.3.4</version>
    </dependency>
    <!--junit 单元测试-->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
    </dependency>
</dependencies>

2、Log4j2

public class Log4j2Test {

    // 定义日志记录器对象
    public static final Logger LOGGER = LogManager.getLogger(Log4j2Test.class);

    // 快速入门
    @Test
    public void testQuick()throws Exception{
        // 日志消息输出
        LOGGER.fatal("fatal");
        LOGGER.error("error");
        LOGGER.warn("warn");
        LOGGER.info("inf");
        LOGGER.debug("debug");
        LOGGER.trace("trace");


    }
}

3、Slf4jTest

public class Slf4jTest {

    public static final Logger LOGGER = LoggerFactory.getLogger(Slf4jTest.class);

    // 快速入门
    @Test
    public void test01()throws Exception{
        // 日志输出
        LOGGER.error("error");
        LOGGER.warn("wring");
        LOGGER.info("info");
        LOGGER.debug("debug");
        LOGGER.trace("trace");

    }
}