Spring Boot启动报错找不到Log4j2的实现

问题描述：

ERROR StatusLogger Log4j2 could not find a logging implementation. Please add log4j-core to the classpath. Using SimpleLogger to log to the console...
ERROR SpringApplication Application run failed

解决方案：

1. 添加pom依赖

<dependency>
   <groupId>org.apache.logging.log4j</groupId>
   <artifactId>log4j-core</artifactId>
   <version>2.10.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-api -->
<dependency>
   <groupId>org.apache.logging.log4j</groupId>
   <artifactId>log4j-api</artifactId>
   <version>2.10.0</version>
</dependency>

2. 在classpath目录下添加log4j2.xml文件
3. log4j2.xml文件内容为:

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="warn">
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="[%-5p] %d %c - %m%n" />
        </Console>
        <File name="File" fileName="dist/my.log">
            <PatternLayout pattern="%m%n" />
        </File>
    </Appenders>

    <Loggers>
        <Logger name="mh.sample2.Log4jTest2" level="INFO">
            <AppenderRef ref="File" />
        </Logger>
        <Root level="INFO">
            <AppenderRef ref="Console" />
        </Root>
    </Loggers>
</Configuration>

注：使用时，即便该文件内容为空，也将不再报错