Generate spring-configuration-metadata.json for easy configuration tips.

[ChunMengLu]

What is the purpose of the change

Generate spring-configuration-metadata.json for easy configuration tips.

Brief changelog

Generate spring-configuration-metadata.json for easy configuration tips.

Verifying this change

maven package Generated spring-configuration-metadata.json

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[walking98]

Not quite understand the concreted usage for the customized ObjectMapper, can you please add some sample or demo? @ChunMengLu

[walking98]

I understand the aim of the PR now. http://www.mdoninger.de/2015/05/16/completion-for-custom-properties-in-spring-boot.html

But still the auto prompt does not work in my IDEA when editing the application.properties, maybe relates to IDEA setting? need dig more ...

[aioair]

I understand the aim of the PR now. http://www.mdoninger.de/2015/05/16/completion-for-custom-properties-in-spring-boot.html

But still the auto prompt does not work in my IDEA when editing the application.properties, maybe relates to IDEA setting? need dig more ...

IDEA is OK.

[walking98]

My IDEA is Community Version, I think this is the reason.

https://stackoverflow.com/questions/31165390/intellij-spring-plugin-not-available

[walking98]

This PR LGTM.