fix excepiton

app.py

@@ -96,7 +96,27 @@ async def setCookie(a1: str) -> Dict[str, Any]:
         print(f"Error during setCookie operation: {e}")
         raise HTTPException(status_code=500, detail=str(e))
 
-
+async def reload_browser():
+    global browser_context, context_page  # 声明全局变量
+    global playwright_instance
+    try:
+        if context_page:
+            await context_page.close()
+        if browser_context:
+            await browser_context.close()
+        if playwright_instance:
+            await playwright_instance.stop()
+        # 重新初始化 Playwright
+        playwright_instance = await async_playwright().start()
+        browser_context, context_page = await get_context_page(playwright_instance, "stealth.min.js")
+        await context_page.goto("https://www.xiaohongshu.com")
+        await asyncio.sleep(5)
+        await context_page.reload()
+        await asyncio.sleep(1)
+        print("浏览器已重新加载")
+    except Exception as e:
+        print(f"Error during reload_browser operation: {e}")
+        raise HTTPException(status_code=500, detail=str(e))
 async def sign(uri: str, data: Dict[str, Any], a1: str, web_session: str) -> Dict[str, Any]:
     global browser_context, context_page  # 声明全局变量
     global global_a1
@@ -131,11 +151,7 @@ async def sign(uri: str, data: Dict[str, Any], a1: str, web_session: str) -> Dic
         if "Target crashed" in str(e):
             print("页面崩溃，正在重新初始化浏览器上下文和页面...")
             try:
-                browser_context, context_page = await get_context_page(playwright_instance, "stealth.min.js")
-                await context_page.goto("https://www.xiaohongshu.com")
-                await asyncio.sleep(5)
-                await context_page.reload()
-                await asyncio.sleep(1)
+                await reload_browser()
                 # 重试签名操作
                 return await sign(uri, data, a1, web_session)
             except Exception as reinit_error:
@@ -143,7 +159,13 @@ async def sign(uri: str, data: Dict[str, Any], a1: str, web_session: str) -> Dic
                 raise HTTPException(status_code=500, detail="Failed to recover from page crash")
         else:
             print(f"Error during sign operation: {e}")
-            raise HTTPException(status_code=500, detail=str(e))
+            try:
+                await reload_browser()
+                # 重试签名操作
+                return await sign(uri, data, a1, web_session)
+            except Exception as reinit_error:
+                print(f"重新初始化失败: {reinit_error}")
+                raise HTTPException(status_code=500, detail="Failed to recover from page crash")
 
 
 @app.post("/sign")