springBoot配置logback

只需要在resource資源包下面把xml文件丟進去就行，springboot會自動掃描資源包的文件的。
推薦個小工具
直接在類名上面寫@Slf4j註解 然後用log.info（），很好用,需要下載lombok 插件

<dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.6</version>
</dependency>

注意：LOG_HOME的配置是指在你這個項目的根目錄下創建logs文件夾
logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <property name="LOG_HOME" value="./logs/demo/" />

    <appender name="Console" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%logger{50}] %msg%n</pattern>
        </encoder>
    </appender>

    <appender name="normalLog"
              class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>${LOG_HOME}/web.normal.%d{yyyy-MM-dd}.log
            </FileNamePattern>
            <MaxHistory>30</MaxHistory>
        </rollingPolicy>
        <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
            <maxFileSize>10MB</maxFileSize>
        </triggeringPolicy>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n
            </pattern>
        </layout>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>ERROR</level>
            <onMatch>DENY</onMatch>
            <onMismatch>ACCEPT</onMismatch>
        </filter>
    </appender>
    <appender name="errorLog"
              class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>${LOG_HOME}/web.error.%d{yyyy-MM-dd}.log
            </FileNamePattern>
            <MaxHistory>30</MaxHistory>
        </rollingPolicy>
        <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
            <maxFileSize>10MB</maxFileSize>
        </triggeringPolicy>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n
            </pattern>
        </layout>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>ERROR</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>


    <logger name="com.example.demo" level="debug" >
        <appender-ref ref="normalLog" />
        <appender-ref ref="errorLog" />
    </logger>


    <root level="info">
        <appender-ref ref="Console" />
    </root>
</configuration>