import org.slf4j.Marker;
import org.slf4j.MarkerFactory;
// 定義Marker常量
public class AppConstants {
    // 定義一個名為 "SECURITY" 的 Marker
    public static final Marker SECURITY_MARKER = MarkerFactory.getMarker("SECURITY");
    // 定義另一個名為 "DB" 的 Marker
    public static final Marker DB_MARKER = MarkerFactory.getMarker("DB");
    // 可以定義更多...
    public static final Marker IMPORTANT_BUSINESS = MarkerFactory.getMarker("IMPORTANT_BUSINESS");
}

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class MyService {
private static final Logger logger = LoggerFactory.getLogger(MyService.class);
	public void login(String username) {
        // ... 業(yè)務邏輯 ...
        if (loginFailed) {
            // 使用Marker：這是一個安全相關的警告日志
        	logger.warn(AppConstants.SECURITY_MARKER, "Failed login attempt for user: {}", username);
        }
    }
    public void queryDatabase() {
        logger.debug(AppConstants.DB_MARKER, "Executing SELECT * FROM users...");
        // ... 執(zhí)行查詢 ...
    }
}

<configuration>
    <!-- 常規(guī)日志 Appender -->
    <appender name="FILE-APPENDER" class="ch.qos.logback.core.FileAppender">
        <file>myapp.log</file>
        <encoder>
            <pattern>%date [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
    <!-- 安全日志專用Appender -->
    <appender name="SECURITY-MARKER-APPENDER" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>security.log</file>
        <filter class="ch.qos.logback.core.filter.MarkerFilter">
            <marker>SECURITY</marker>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <encoder>
            <pattern>%date [%thread] %marker %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
    <root level="debug">
        <appender-ref ref="FILE-APPENDER"/>
        <appender-ref ref="SECURITY-MARKER-APPENDER"/>
    </root>
</configuration>

<appender name="EMAIL" class="ch.qos.logback.classic.net.SMTPAppender">
    <smtpHost>smtp.mycompany.com</smtpHost>
    <to>ops@mycompany.com</to>
    <from>alerts@myapp.com</from>
    <subject>URGENT ERROR: %logger{20} - %m</subject>
    <layout class="ch.qos.logback.classic.PatternLayout">
        <pattern>%date %-5level %logger{35} - %message%n</pattern>
    </layout>
    <!-- 使用復合過濾器 -->
    <filter class="ch.qos.logback.core.filter.EvaluatorFilter">
        <evaluator class="ch.qos.logback.classic.boolex.OnMarkerEvaluator">
            <!-- 指定 Marker 名稱 -->
            <marker>IMPORTANT_BUSINESS</marker>
        </evaluator>
        <onMatch>ACCEPT</onMatch>
        <onMismatch>DENY</onMismatch>
    </filter>
    <!-- 加上 LevelFilter 確保只有 ERROR 級別才觸發(fā) -->
    <filter class="ch.qos.logback.core.filter.LevelFilter">
        <level>ERROR</level>
        <onMatch>ACCEPT</onMatch>
        <onMismatch>DENY</onMismatch>
    </filter>
</appender>

// 創(chuàng)建一個父Marker
Marker parentMarker = MarkerFactory.getMarker("PARENT");
// 創(chuàng)建一個子Marker
Marker childMarker = MarkerFactory.getMarker("CHILD");
// 建立繼承關系
childMarker.add(parentMarker);