51 lines
1.6 KiB
Python
51 lines
1.6 KiB
Python
from datetime import datetime
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import time
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from typing import Optional
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class CommonUtils:
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"""工具类"""
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@staticmethod
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def generate_order_id(prefix: str) -> str:
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"""
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生成订单号
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:param prefix: 订单前缀，如 M(商品订单)、P(支付订单)、D(配送订单)
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:return: 15位订单号：前缀(1位) + 日期(8位) + 时间戳(6位)
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"""
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now = datetime.now()
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date_str = now.strftime('%Y%m%d')
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# 取时间戳后6位
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timestamp = str(int(time.time() * 1000))[-6:]
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return f"{prefix}{date_str}{timestamp}"
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@staticmethod
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def generate_verify_code() -> str:
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"""
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生成核销码
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:return: 16位数字核销码：日期(8位) + 时间戳(8位)
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"""
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now = datetime.now()
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date_str = now.strftime('%Y%m%d')
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timestamp = str(int(time.time() * 1000))[-8:]
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return f"{date_str}{timestamp}"
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@staticmethod
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def optimized_image_url(url: Optional[str], quality: int = 60) -> Optional[str]:
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"""
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为图片URL添加腾讯云图片处理参数
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:param url: 原始图片URL
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:param quality: 图片质量，范围1-100，默认80
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:return: 处理后的URL
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"""
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if not url:
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return url
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# 确保quality在有效范围内
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quality = max(1, min(100, quality))
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# 如果URL已经包含图片处理参数，则不重复添加
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if "?imageMogr2/quality/" in url:
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return url
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# 添加图片处理参数
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return f"{url}?imageMogr2/quality/{quality}" |