Update app.py

app.py

@@ -69,8 +69,8 @@ def analyze_report(excel_path):
         return "请上传 Excel 文件", None, None, None
 
     try:
-        sankey_fig = analyze_teacher_dashboard(excel_path=excel_path)
-        cluster_fig, cluster_stats = cluster_and_visualize(excel_path=excel_path)
+        sankey_fig, sb64 = analyze_teacher_dashboard(excel_path=excel_path)
+        cluster_fig, cluster_stats, cb64 = cluster_and_visualize(excel_path=excel_path)
         advice = generate_teaching_advice(sankey_fig, cluster_stats)
 
         # 统计表格
@@ -106,7 +106,7 @@ def analyze_report(excel_path):
                 </p>
             </div>
         """
-        return html_report, sankey_fig, cluster_fig, cluster_stats
+        return html_report, sankey_fig, cluster_fig, cluster_stats, sb64, cb64
 
     except Exception as e:
         return f"<p style='color:red; text-align:center;'>分析失败：{str(e)}</p>", None, None, None
@@ -259,7 +259,7 @@ async def plugin_api(
             temp_file_path = temp_file.name  # 拿到临时文件的真实路径（比如：C:\Users\XXX\AppData\Local\Temp\tmpxxxx.xlsx）
         print(df)
         # 调用分析函数（传临时文件的真实路径）
-        html_report, sankey_fig, cluster_fig, stats = analyze_report(temp_file_path)
+        html_report, sankey_fig, cluster_fig, stats, sb64, cb64 = analyze_report(temp_file_path)
 
         print(f"{sankey_fig}生成成功！")
         print(f"{cluster_fig}生成成功！")
@@ -269,14 +269,16 @@ async def plugin_api(
         print(f"临时文件已删除：{temp_file_path}")
 
         # 按平台要求返回结果
+        # 按平台要求返回结果（用 sb64/cb64 替换 to_json()）
         return {
             "code": 200,
             "message": "success",
             "data": {
                 "html_report": html_report if html_report else "",
-                "sankey_fig": sankey_fig.to_json() if sankey_fig is not None else "",
-                "cluster_fig": cluster_fig.to_json() if cluster_fig is not None else "",
-                "stats": stats if stats else []
+                # 直接用已有的base64字符串，不用再转json！
+                "sankey_image": sb64 if sb64 else "",  # 键名改成sankey_image（符合平台图片命名规范）
+                "cluster_image": cb64 if cb64 else "",  # 键名改成cluster_image
+                "statistics": formatted_stats if formatted_stats else []  # 格式化后的统计数据
             }
         }
     except Exception as e: