报错分析报告

1. 错误翻译

原文：Max retries exceeded with url: /sentence-transformers/all-MiniLM-L6-v2/resolve/main/modules.json (Caused by NewConnectionError(': Failed to establish a new connection: [Errno 101] Network is unreachable'))
译文：尝试URL的最大重试次数已超出：/sentence-transformers/all-MiniLM-L6-v2/resolve/main/modules.json （原因是新连接错误：无法建立新连接：[错误号101] 网络不可达）

2. 原因分析

3. 解决方案

#### 方案一：设置代理（如果处于受限网络环境）

python
import os
os.environ['HTTP_PROXY'] = 'http://your-proxy-server:port'
os.environ['HTTPS_PROXY'] = 'https://your-proxy-server:port'

#### 方案二：使用镜像源

python
from sentence_transformers import SentenceTransformer
使用国内镜像源（如果可用）

model = SentenceTransformer('all-MiniLM-L6-v2', 
                          cache_folder='/path/to/local/cache')

#### 方案三：增加重试和超时设置

python
from sentence_transformers import SentenceTransformer
import requests
自定义会话以增加重试

session = requests.Session()
adapter = requests.adapters.HTTPAdapter(max_retries=3)
session.mount('https://', adapter)
try:
    model = SentenceTransformer('all-MiniLM-L6-v2', 
                              request_session=session,
                              timeout=30)
except Exception as e:
    print(f"下载失败: {e}")

4. ️ 预防措施

#### 最佳实践建议：

bash
   python -c "from sentence_transformers import SentenceTransformer; SentenceTransformer('all-MiniLM-L6-v2')"
   

python
   import urllib.request
   def check_network():
       try:
           urllib.request.urlopen('https://huggingface.co', timeout=5)
           return True
       except:
           return False
   

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