I am using a fresh install of STS 3.8.3 and I am unable to add the JPA facet to an EJB project:
If I try to create a JPA project, I cannot find that option:
I am certain these used to be available in STS. What did I miss?
We removed those extensions from the default distribution because users reported severe issues (search for JPA Event Handler on SO). In order to avoid this we decided to remove those tools from the distribution and added them to the extension install, so that you can get them back into STS quite easily.
However, we can revisit that decision in the future, if those tools don't cause those issues anymore.
Upon further investigation I discovered that the Eclipse Web Tools Platform at eclipse update site http://download.eclipse.org/webtools/repository/neon includes the following:
Why is this no longer configured in STS? That is really too bad and not a good decision in my opinion.
来源：https://stackoverflow.com/questions/42869652/spring-tools-suite-jpa-project-and-the-jpa-facet