a

backend/api/routes/account.py

@@ -407,22 +407,55 @@ 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）
+            # 直接调用币安 API 平仓，绕过 BinanceClient 的检查逻辑
-            order = await client.place_order(
+            # 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,
-                order_type='MARKET',
+                    reduceOnly="true"  # 使用字符串格式，符合币安API要求
-                reduce_only=True
                 )
                 
                 if not order:
-                error_msg = f"{symbol} 平仓失败：下单返回 None，请检查日志"
+                    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')
             logger.info(f"✓ {symbol} 平仓订单已提交 (订单ID: {order_id})")