I solved the problems.
1. The JSON fields needed to look like the
Java variables, NOT the database fields.
2. I needed a @RequestBody inside the save method (and update, too).
Now that I've solved these issues, it seems anyone with decent Spring background would spot these issues right away, leading me to believe nobody read my this post (or perhaps also the one I updated over a day ago).
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Moreover, it's strange that there have been no replies from JR (from my two recent Spring postings) other than pointing out my formatting was incorrect or that I'd copied the same method twice. In years past, JR was alive with activity. Perhaps this is just how the Spring forum is? Or maybe other sites like Stack are more popular now? Not sure.
But using a framework like Spring makes me nervous. Why? Well, if everything "works", the sun is shining and the sky is blue and you're amazingly more productive. Yet, when something doesn't work, it can take frustrating days to figure it out. Maybe the forum folks here are too busy figuring out their own Spring problems?
- mike