springboot 使用log4j2配置

 

 pom配置如下：

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
            <!--排除logback启动桥接器-->
            <exclusions>
                <!--方式一：排除掉spring-boot-starter-logging-->
<!--                <exclusion>-->
<!--                    <groupId>org.springframework.boot</groupId>-->
<!--                    <artifactId>spring-boot-starter-logging</artifactId>-->
<!--                </exclusion>-->
                <!--方式二：或者精确的排除掉logback-classic 和 log4j-to-slf4j-->
                <exclusion>
                    <groupId>ch.qos.logback</groupId>
                    <artifactId>logback-classic</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.apache.logging.log4j</groupId>
                    <artifactId>log4j-to-slf4j</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <!-- log4j2场景启动器-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-log4j2</artifactId>
        </dependency>
        <!--log4j2 若使用 AsyncLogger标签 需要disruptor支持-->
        <dependency>
            <groupId>com.lmax</groupId>
            <artifactId>disruptor</artifactId>
            <version>3.4.4</version>
        </dependency>

    </dependencies>

 

若是不排除 spring-boot-starter-logging，将会同时存在两个 桥接器，报错如下：