Fix Matplotlib config directory permissions issue and improve file handling

Dockerfile

@@ -11,6 +11,11 @@ RUN mkdir -p uploads
 
 # 设置环境变量
 ENV PYTHONUNBUFFERED=1
+# 设置Matplotlib配置目录到应用有权限的/tmp目录
+ENV MPLCONFIGDIR=/tmp/matplotlib
+
+# 创建Matplotlib配置目录
+RUN mkdir -p /tmp/matplotlib
 
 # 暴露端口
 EXPOSE 7860

gemini_chatbot.py

@@ -12,6 +12,15 @@ import traceback
 import jieba  # 中文分词
 import re
 from collections import Counter
+
+# 设置Matplotlib配置目录环境变量，在导入matplotlib前设置
+if 'MPLCONFIGDIR' not in os.environ:
+    os.environ['MPLCONFIGDIR'] = '/tmp/matplotlib'
+    try:
+        os.makedirs('/tmp/matplotlib', exist_ok=True)
+    except:
+        logging.warning("无法创建Matplotlib配置目录，将使用系统默认值")
+
 from wordcloud import WordCloud
 import matplotlib
 matplotlib.use('Agg')  # 设置Matplotlib为非交互模式

requirements_hf.txt

@@ -0,0 +1,9 @@
+flask==2.2.3
+requests==2.28.2
+python-dotenv==1.0.0
+pypdf2==3.0.1
+jieba
+Werkzeug==2.2.3
+wordcloud
+matplotlib
+gunicorn