升级到JDK21，springboot3.3.1后打包正常，运行时报错了呢。

[grace-full]

Error: Could not find or load main class null
Caused by: java.lang.ClassNotFoundException: null
panic: exit status 1

goroutine 1 [running]:
main.main()
/opt/apps/java/grace/grace-admin/target/xjar.go:86 +0x54e

[zzqo]

只支持springboot2