示例：

1.项目依赖

<dependency>
	<groupId>com.ofpay</groupId>
	<artifactId>logback-mdc-ttl</artifactId>
   <version>1.0.2-SNAPSHOT</version>
</dependency>

2. 在Java的启动参数加上：

• -Xbootclasspath/a:/path/to/transmittable-thread-local-2.x.x.jar
• -javaagent:/path/to/transmittable-thread-local-2.x.x.jar

3. 在logback配置文件中增加TtlMdcListener

<?xml version="1.0" encoding="UTF-8"?>
<configuration >
    <!-- ...(略) -->
    <contextListener class="com.ofpay.logback.TtlMdcListener"/>

    <!--例子:  %X{uuid} 支持在跨线程池时传递-->
    <property scope="context" name="APP_PATTERN"
              value='%d{yyyy-MM-dd HH:mm:ss.SSS}|%X{uuid}|%level|%M|%C\:%L|%thread|%replace(%.-2000msg){"(\r|\n)","\t"}|"%.-2000ex{full}"%n'/>
</configuration>