[!NOTE] From TTL v2.13+ upgrade to Java 8. 🚀 If you need Java 6 support, use version 2.12.x

Change Log

💪 Enhancement

• Fix class transform exception on Java 21 by upgrading javassist to 3.30.2-GA(issue #555 submitted by @brucelwl)
  • specical thanks to the excellent works of @wuwen5 👍 :
    • troubleshoot the problem 🐞
    • resolve the problem by submitting the issue and PR to javassist project: 🆒
      • issue https://github.com/jboss-javassist/javassist/issues/462
      • PR https://github.com/jboss-javassist/javassist/pull/463
    • and follow the subsequent java 8 support of new javassit version 🫡
      • https://github.com/jboss-javassist/javassist/pull/473
  • more exception info see the CI job

🛠️ Refactor

• [TtlExecutorTransformlet.java]: remove redundant qualified package name; extract local var
• [ClassInfo.java] simplify classpath setting of javassist classpool

📚 Documentation

• update document/javadoc link to java 21 📚
• update maven central links of dependencies version 📦 (issue #583 submitted by @youngledo)

🚜 Build/CI

• add bytecode version verification plugin ✅ (by @wuwen5 in #590)
• add pom version validation ✅
• upgrade dependencies/plugins 🛠️
• upgrade default build JDK to java 17 from java 11 ☕️
• upgrade maven wrapper to 3.9.6 🪶
• auto-detect JAVA_HOME of java versions when run CI in GitHub Actions ☕️

Java API Doc

https://alibaba.github.io/transmittable-thread-local/apidocs/2.14.5/index.html

Maven dependency

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>transmittable-thread-local</artifactId>
    <version>2.14.5</version>
</dependency>