关于java:低代码系统改造ttl和log4j2实现全局日志跟踪

ttl

ttl源码

log4j2-PatternLayout

PatternLayout

实现

jvm增加启动参数：

-javaagent:path/to/transmittable-thread-local-2.x.y.jar

援用maven：

<!--    because this dependency is implemented by log4j2 runtime extension    that will never be used by biz code,    set scope to *runtime*.--><dependency>    <groupId>com.alibaba</groupId>    <artifactId>log4j2-ttl-thread-context-map</artifactId>    <version>1.3.3</version>    <scope>runtime</scope></dependency>

log4j2 xml配置：
[%X{traceId}]
log4j2 新增properties配置文件log4j2.component.properties，内容：

log4j2.threadContextMap=com.alibaba.ttl.log4j2.TtlThreadContextMap