63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
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import requests
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import json
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from io import BytesIO
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def upload_permanent_image_to_wechat(access_token, image_url):
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"""
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上传永久图片到微信公众号素材库
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参数:
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access_token (str): 公众号的access_token
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image_url (str): 图片的URL地址
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返回:
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str: 成功时返回永久素材的media_id
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None: 失败时返回None
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"""
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if not access_token or not image_url:
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return None
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# 微信上传永久素材接口（图片类型）
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upload_url = f"https://api.weixin.qq.com/cgi-bin/material/add_material?access_token={access_token}&type=image"
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try:
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# 先从URL下载图片
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image_response = requests.get(image_url, timeout=15)
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image_response.raise_for_status() # 检查请求是否成功
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# 检查图片大小（微信限制永久图片不超过2MB）
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image_size = len(image_response.content)
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if image_size > 2 * 1024 * 1024: # 2MB
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return None
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# 将图片内容转换为文件对象
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image_file = BytesIO(image_response.content)
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# 构造表单数据
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files = {
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'media': ('image.jpg', image_file, 'image/jpeg')
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}
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# 上传图片到微信服务器
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response = requests.post(upload_url, files=files, timeout=15)
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result = json.loads(response.text)
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# 检查是否返回错误
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if "errcode" in result and result["errcode"] != 0:
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return None
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# 返回media_id
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media_id = result.get("media_id")
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if media_id:
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return media_id
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else:
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return None
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except requests.exceptions.RequestException:
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return None
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except json.JSONDecodeError:
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return None
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except Exception:
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return None
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