45 lines
1.2 KiB
Python
45 lines
1.2 KiB
Python
"""第5-3课标准示例：根据业务结果生成HTTP响应。"""
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from http import HTTPStatus
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BOOKS = {1: "Python入门", 2: "数据库实践"}
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def find_book(book_id: int) -> dict:
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"""查询图书，并用状态码明确表达查询结果。"""
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title = BOOKS.get(book_id)
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if title is None:
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return {
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"status": HTTPStatus.NOT_FOUND,
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"headers": {"Content-Type": "application/json; charset=utf-8"},
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"body": {"message": "图书不存在"},
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}
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return {
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"status": HTTPStatus.OK,
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"headers": {"Content-Type": "application/json; charset=utf-8"},
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"body": {"id": book_id, "title": title},
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}
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def print_response(response: dict) -> None:
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"""输出响应状态行、响应头和响应体。"""
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status = response["status"]
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print(f"HTTP/1.1 {status.value} {status.phrase}")
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print(f"Content-Type: {response['headers']['Content-Type']}")
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print(f"响应体：{response['body']}")
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def main() -> None:
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"""分别展示查询成功与资源不存在的响应。"""
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print_response(find_book(1))
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print("---")
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print_response(find_book(99))
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if __name__ == "__main__":
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main()
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