springboot中logback打印日志（转）

springboot对logback的支持是非常好的，不需要任何配置，只需要在resource下加logback.xml就可以实现功能
直接贴代码：

<?xml version="1.0" encoding="UTF-8"?>

<configuration scan="true" scanPeriod="60 seconds">
    <appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{yyyy-M-d HH:mm:ss} %t %p %m%n</pattern>
        </encoder>
    </appender>
    <appender name="springboot"
        class="ch.qos.logback.core.rolling.RollingFileAppender">
        <!-- <Encoding>UTF-8</Encoding> -->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>logs/logback/springboot_%d{yyyy-M-d}.log
            </FileNamePattern>
            <MaxHistory>10</MaxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-M-d HH:mm:ss} %t %p %m%n</pattern>
        </encoder>
    </appender>
    <appender name="smile"
        class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>logs/logback/smile_%d{yyyy-M-d}.log
            </FileNamePattern>
            <MaxHistory>10</MaxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-M-d HH:mm:ss} %t %p %m%n</pattern>
        </encoder>
    </appender>

    <logger name="org.springframework.boot" level="debug"
        additivity="false">
        <appender-ref ref="springboot" />
    </logger>
    <!-- name包必须能够扫描到所以类，包括启动类 -->
    <logger <span style="color:#ff0000;">name="com.smile"</span> level="debug" additivity="false">
        <appender-ref ref="smile" />
    </logger>
    <root level="info">
        <appender-ref ref="stdout" />
    </root>
</configuration>

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="60 seconds">


<appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">


<encoder>


<pattern>%d{yyyy-M-d HH:mm:ss} %t %p %m%n</pattern>


</encoder>


</appender>


<appender name="springboot"


class="ch.qos.logback.core.rolling.RollingFileAppender">


<!-- <Encoding>UTF-8</Encoding> -->


<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">


<FileNamePattern>logs/logback/springboot_%d{yyyy-M-d}.log


</FileNamePattern>


<MaxHistory>10</MaxHistory>


</rollingPolicy>


<encoder>


<pattern>%d{yyyy-M-d HH:mm:ss} %t %p %m%n</pattern>


</encoder>


</appender>


<appender name="smile"


class="ch.qos.logback.core.rolling.RollingFileAppender">


<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">


<FileNamePattern>logs/logback/smile_%d{yyyy-M-d}.log


</FileNamePattern>


<MaxHistory>10</MaxHistory>


</rollingPolicy>


<encoder>


<pattern>%d{yyyy-M-d HH:mm:ss} %t %p %m%n</pattern>


</encoder>


</appender>


&lt;logger name="org.springframework.boot" level="debug"</br>
	additivity="false"&gt;</br>
	&lt;appender-ref ref="springboot" /&gt;</br>
&lt;/logger&gt;</br>
&lt;!-- name包必须能够扫描到所以类，包括启动类 --&gt;</br>
&lt;logger <span style="color:#ff0000;">name="com.smile"</span> level="debug" additivity="false"&gt;</br>
	&lt;appender-ref ref="smile" /&gt;</br>
&lt;/logger&gt;</br>
&lt;root level="info"&gt;</br>
	&lt;appender-ref ref="stdout" /&gt;</br>
&lt;/root&gt;</br>

</configuration>  

其中值得注意的是：你配置文件中的包名要能够扫描到你的所有类，包括启动类。

否则，你的日志文件是生成了，但是不会向里面写入内容

启动程序打印日志，日志成功生成：