Spring Modify the preprocessing method to completely modify the object

Modify the preprocessing method to completely modify the object

Comment From: pivotal-issuemaster

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Comment From: pivotal-issuemaster

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Comment From: sbrannen

For starters, please do not reformat the code base. All PRs must adhere to the Code Style.

Second, the proposed change in AbstractJackson2HttpMessageConverter is a breaking change to the existing API (changing the method return type from void to Object).

I am therefore closing this PR.

If you feel that there is missing functionality in AbstractJackson2HttpMessageConverter and its subclasses, please create an issue to discuss that.

Thanks

Comment From: luohongtu

Thank you for pointing out my shortcomings