optimize(hz): handler_single.go supports more template parameters

[ypo2478]

What type of PR is this?

optimize

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• This PR title match the format: <type>(optional scope): <description>
• The description of this PR title is user-oriented and clear enough for others to understand.
• Attach the PR updating the user documentation if the current PR requires user awareness at the usage level. User docs repo

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en: handler_single.go supports more template parameters
zh(optional):

(Optional) Which issue(s) this PR fixes:

#1001

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (85d1aff) 82.57% compared to head (21b9a61) 82.59%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1004      +/-   ##
===========================================
+ Coverage    82.57%   82.59%   +0.02%     
===========================================
  Files           98       98              
  Lines         9974     9974              
===========================================
+ Hits          8236     8238       +2     
+ Misses        1242     1241       -1     
+ Partials       496      495       -1     

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lgtm~