http://412887952-qq-com.iteye.com/blog/2306441
http://www.cnblogs.com/mailingfeng/p/3499436.html-

logback的日志文件命名是logback-spring.xml，而不是logback.xml，因为命名为logback-spring.xml的日志配置文件，spring boot可以为它添加一些spring boot特有的配置项。
http://blog.csdn.net/yingxiake/article/details/51276671

logback-spring.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <!--  <include resource="org/springframework/boot/logging/logback/base.xml" />  -->
    <!--  <logger name="org.springframework.web" level="INFO"/> -->
    <!-- 控制台输出 -->
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <encoder><!-- 格式化输出 -->
            <pattern>[%d{yyyy-MM-dd'T'HH:mm:ss.SSS}] %level - %m%n</pattern>
        </encoder>
    </appender> 
    <!-- 控制台输出级别 -->
    <root level="info">
        <appender-ref ref="console" />
    </root>
    
    <!-- 文件输出 -->
    <appender name="fileAppender" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${LOG_PATH}/${LOG_FILE}.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
            <fileNamePattern>${LOG_PATH}/%d{yyyy-MM-dd,aux}/${LOG_FILE}-%d{yyyy-MM-dd}.%i.log.zip</fileNamePattern>
            <maxFileSize>20MB</maxFileSize>
            <maxHistory>180</maxHistory>
            <totalSizeCap>2GB</totalSizeCap>
        </rollingPolicy>
        <encoder><!-- 必须指定，否则不会往文件输出内容 -->
            <pattern>[%d{yyyy-MM-dd'T'HH:mm:ss.SSS}] %level ${LOG_FILE}[%X{action}-%X{taskId}] %logger : %message%n</pattern>
        </encoder>
    </appender>
    
    <!-- 文件输出_error -->
    <appender name="fileErrorAppender" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${LOG_PATH}/${LOG_FILE}-error.log</file>
        <!-- 过滤掉ERROR级别以下的日志不输出到文件中 -->
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
          <level>WARN</level>
        </filter>
        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
            <fileNamePattern>${LOG_PATH}/%d{yyyy-MM-dd,aux}/${LOG_FILE}-error-%d{yyyy-MM-dd}.%i.log.zip</fileNamePattern>
            <maxFileSize>20MB</maxFileSize>
            <maxHistory>180</maxHistory>
            <totalSizeCap>2GB</totalSizeCap>
        </rollingPolicy>
        <encoder>
          <pattern>[%d{yyyy-MM-dd'T'HH:mm:ss.SSS}] %level ${LOG_FILE} %logger : %message%n</pattern>
        </encoder>
    </appender>
     <!-- 文件输出级别 -->  
    <root level="info">  
        <appender-ref ref="fileAppender" /> 
        <appender-ref ref="fileErrorAppender" />
    </root>  
 </configuration>

application.properties

logging.path=./logs
logging.file=spring_tutorial

日志参数化

1.日志配置文件中添加占位符

<encoder><!-- 必须指定，否则不会往文件输出内容 -->
  <pattern>[%d{yyyy-MM-dd'T'HH:mm:ss.SSS}] %level ${LOG_FILE}[%X{action}-%X{taskId}] %logger : %message%n</pattern>
</encoder>

2.写入日志

  import org.slf4j.MDC;
  MDC.put("action", "query");
  MDC.put("taskId", "1111");
  logger.info("info信息");

3.效果

Paste_Image.png