How to print virtual thread name in logback

[XiaotianZha]

This is my log pattern

<property name="log.pattern" value="%d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX} %X{TrackingId} [%thread] %-5level %logger{10} %msg%n" />

and logs like

2024-07-16T14:34:38.383+08:00 [http-nio-8081-exec-1] INFO o.s.w.s.DispatcherServlet Completed initialization in 1 ms

It works fine until I upgrade to JDK21 and tried to use virtual thead. The thread name is empty like this:

2024-07-16T14:33:18.503+08:00 [] INFO o.s.w.s.DispatcherServlet Completed initialization in 1 ms

Version:

• Springboot 3.2.4
• logback 1.4.14

[XiaotianZha]

Finally I upgrade logback to 1.5.0

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