APIs not found

[margaretha]

The web-services cannot be found after upgrading to Jersey 3. The server doesn't run properly, although the test suite run well.

[margaretha]

The problem was caused by Shutdownhandler trying to shutdown any running instances at start. Setting the parameter sendShutdownAtStart fixes the problem. However, we may get rid of this handler since it is not really used and necessary.

Besides, there are some errors regarding jakarta validation that require additional libraries: hibernate-validator and jakarta.el. Strangely, the errors didn't occur when running the test suite.

[margaretha]

The problem is also related to multi-release jar, see #706 . Maven-shade-plugin unpack dependency jars and repacks them, but it doesn't use the correct java version for Jersey-Spring ext so Spring dependency injection doesn't work. Without specifying <Multi-Release>true</Multi-Release>, it gets Java 11 from a multi-release jar.