From e06687b7a5795190f97eca63b380d46f06759ff4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=96=87=E8=96=87=E5=AE=89?= <vivian@192.168.3.101>
Date: Fri, 16 Jan 2026 17:07:38 +0800
Subject: [PATCH] a

---
 backend/api/routes/account.py | 57 +++++++++++++++++++++++++++--------
 1 file changed, 45 insertions(+), 12 deletions(-)

diff --git a/backend/api/routes/account.py b/backend/api/routes/account.py
index af1ad3f..218cd2c 100644
--- a/backend/api/routes/account.py
+++ b/backend/api/routes/account.py
@@ -407,20 +407,53 @@ async def close_position(symbol: str):
             side = 'SELL' if position_amt > 0 else 'BUY'
             quantity = abs(position_amt)
             
-            logger.info(f"开始执行平仓操作: {symbol} {side} {quantity:.4f} @ MARKET...")
+            logger.info(f"开始执行平仓操作: {symbol} {side} {quantity:.4f} @ MARKET (reduceOnly=true)...")
             
-            # 直接调用 BinanceClient 平仓（使用 reduceOnly=True）
-            order = await client.place_order(
-                symbol=symbol,
-                side=side,
-                quantity=quantity,
-                order_type='MARKET',
-                reduce_only=True
-            )
-            
-            if not order:
-                error_msg = f"{symbol} 平仓失败：下单返回 None，请检查日志"
+            # 直接调用币安 API 平仓，绕过 BinanceClient 的检查逻辑
+            # 对于平仓操作，应该直接使用币安 API，不需要名义价值和保证金检查
+            try:
+                # 获取交易对精度信息，调整数量精度
+                symbol_info = await client.get_symbol_info(symbol)
+                if symbol_info:
+                    quantity_precision = symbol_info.get('quantityPrecision', 8)
+                    step_size = symbol_info.get('stepSize', 0)
+                    min_qty = symbol_info.get('minQty', 0)
+                    
+                    # 调整数量精度
+                    if step_size > 0:
+                        adjusted_quantity = float(int(quantity / step_size)) * step_size
+                    else:
+                        adjusted_quantity = round(quantity, quantity_precision)
+                    
+                    # 确保不小于最小数量
+                    if min_qty > 0 and adjusted_quantity < min_qty:
+                        adjusted_quantity = min_qty
+                    
+                    adjusted_quantity = round(adjusted_quantity, quantity_precision)
+                    if adjusted_quantity != quantity:
+                        logger.info(f"数量精度调整: {quantity} -> {adjusted_quantity}")
+                        quantity = adjusted_quantity
+                
+                # 直接调用币安 API 下单（使用 reduceOnly="true"）
+                order = await client.client.futures_create_order(
+                    symbol=symbol,
+                    side=side,
+                    type='MARKET',
+                    quantity=quantity,
+                    reduceOnly="true"  # 使用字符串格式，符合币安API要求
+                )
+                
+                if not order:
+                    error_msg = f"{symbol} 平仓失败：币安API返回 None"
+                    logger.error(error_msg)
+                    raise HTTPException(status_code=500, detail=error_msg)
+                    
+            except Exception as order_error:
+                error_msg = f"{symbol} 平仓失败：下单异常 - {str(order_error)}"
                 logger.error(error_msg)
+                logger.error(f"  错误类型: {type(order_error).__name__}")
+                import traceback
+                logger.error(f"  完整错误堆栈:\n{traceback.format_exc()}")
                 raise HTTPException(status_code=500, detail=error_msg)
             
             order_id = order.get('orderId')