如何在spring boot应用中通过logback.xml为两个附加器设置两个不同的日志级别？

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <appender name="appender1" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
    
    <appender name="appender2" class="ch.qos.logback.core.FileAppender">
        <file>appender2.log</file>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
    
    <logger name="com.example.package1" level="DEBUG" additivity="false">
        <appender-ref ref="appender1" />
    </logger>
    
    <logger name="com.example.package2" level="INFO" additivity="false">
        <appender-ref ref="appender2" />
    </logger>
    
    <root level="INFO">
        <appender-ref ref="appender1" />
    </root>
</configuration>

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MyClass {
    private static final Logger logger1 = LoggerFactory.getLogger("com.example.package1");
    private static final Logger logger2 = LoggerFactory.getLogger("com.example.package2");

    public void doSomething() {
        logger1.debug("This is a debug message for logger1");
        logger2.info("This is an info message for logger2");
    }
}