Java Logback

Logback是由Log4j作者所另外再寫的log套件
需要的套件如下：

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.22</version>
</dependency>
<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-core</artifactId>
    <version>1.1.7</version>
</dependency>
<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-classic</artifactId>
    <version>1.1.7</version>
</dependency>

logback.xml

<configuration scan="true" scanPeriod="60 seconds" debug="false">
    <jmxConfigurator />
    <property name="log_home" value="./log" />
    <property name="maxHistory" value="30" />
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%-5level] Class:%logger Method:%M - %msg%n</pattern>
        </encoder>
    </appender>
    <appender name="ERROR" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>ERROR</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>
                ${log_home}/%d{yyyy-MM-dd}/%d{yyyy-MM-dd} error-log.log
            </fileNamePattern>
            <maxHistory>${maxHistory}</maxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%-5level] Class:%logger Method:%M - %msg%n</pattern>
        </encoder>
    </appender>

    <appender name="WARN" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>WARN</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${log_home}/%d{yyyy-MM-dd}/%d{yyyy-MM-dd} warn-log.log</fileNamePattern>
            <maxHistory>${maxHistory}</maxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%-5level] Class:%logger Method:%M - %msg%n</pattern>
        </encoder>
    </appender>
    <appender name="INFO" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>INFO</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${log_home}/%d{yyyy-MM-dd}/%d{yyyy-MM-dd} info-log.log</fileNamePattern>
            <maxHistory>${maxHistory}</maxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%-5level] Class:%logger Method:%M - %msg%n</pattern>
        </encoder>
    </appender>
    <appender name="DEBUG" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>DEBUG</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${log_home}/%d{yyyy-MM-dd}/%d{yyyy-MM-dd} debug-log.log</fileNamePattern>
            <maxHistory>${maxHistory}</maxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%-5level] Class:%logger Method:%M - %msg%n</pattern>
        </encoder>
    </appender>
    <appender name="TRACE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>TRACE</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${log_home}/%d{yyyy-MM-dd}/%d{yyyy-MM-dd} trace-log.log</fileNamePattern>
            <maxHistory>${maxHistory}</maxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%-5level] Class:%logger Method:%M - %msg%n</pattern>
        </encoder>
    </appender>
    <root>
        <level value="debug" />
        <appender-ref ref="console" />
        <appender-ref ref="ERROR" />
        <appender-ref ref="INFO" />
        <appender-ref ref="WARN" />
        <appender-ref ref="DEBUG" />
        <appender-ref ref="TRACE" />
    </root>
</configuration>

程式碼：

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

import java.util.Random;

public class Test {

    public static void main(String[] args) {
        Logger logger = LoggerFactory.getLogger(Test.class);
        logger.debug("Hey");
        logger.debug("{}", new Random().nextInt(10) + 1);
    }

}

執行結果：