fix struct nested reflection

[aixj1984]

• With pull requests:
  • Open your pull request against main
  • Your pull request should have no more than two commits, if not you should squash them.
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38 这个问题只解决了一层嵌套

现在修改代码，通过递归方式，解决多层嵌套的问题

[github-actions[bot]]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[afumu]

• With pull requests:

  • Open your pull request against main
  • Your pull request should have no more than two commits, if not you should squash them.
  • You should pass all tests by go test -v ./... at the project root path in local.
  • It should pass all tests in the available continuous integration systems such as GitHub Actions.
  • You should add/modify tests to cover your proposed code changes.
  • If your pull request contains a new feature, please document it on the README.

38 这个问题只解决了一层嵌套 现在修改代码，通过递归方式，解决多层嵌套的问题

good！

[afumu]

@aixj1984 请在评论下面回复这句话哈

[aixj1984]

I have read the CLA Document and I hereby sign the CLA