Adjust the import package order and replace http library constants with string

[Fish-pro]

When I read the code, I noticed that the package import order was out of order and that some special library calls used custom strings as arguments. Therefore, it is recommended to adjust the import package order according to the goimport standard, using package constants instead of strings

I hope the above suggestions can help contribute to the community. Thank you

/remove-kind feature

[k8s-ci-robot]

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