a

backend/api/routes/account.py

@@ -83,7 +83,13 @@ async def _ensure_exchange_sltp_for_symbol(symbol: str):
         open_trades = Trade.get_by_symbol(symbol, status='open') or []
         if not open_trades:
             raise HTTPException(status_code=400, detail=f"{symbol} 数据库无 open 交易记录，无法确定止损止盈价")
+        # 尽量取最新一条 open trade（避免同一symbol多条 open 时取到旧记录）
+        try:
+            open_trades.sort(key=lambda x: int(x.get("id", 0) or 0), reverse=True)
+        except Exception:
+            pass
         trade = open_trades[0]
+
         sl = trade.get("stop_loss_price")
         tp = trade.get("take_profit_2") or trade.get("take_profit_price") or trade.get("take_profit_1")
         try:
@@ -94,8 +100,48 @@ async def _ensure_exchange_sltp_for_symbol(symbol: str):
             tp = float(tp) if tp is not None else None
         except Exception:
             tp = None
+
+        # 兼容旧数据库：如果 trades 表还没迁移 stop_loss_price / take_profit_price 字段，
+        # 则回退用 entry_price/quantity/leverage + 配置的 STOP_LOSS_PERCENT/TAKE_PROFIT_PERCENT 计算。
         if not sl or not tp:
-            raise HTTPException(status_code=400, detail=f"{symbol} 数据库缺少止损/止盈价，无法补挂")
+            try:
+                entry_price = float(trade.get("entry_price") or 0)
+                qty = float(trade.get("quantity") or 0)
+                lv = float(trade.get("leverage") or 0) or float(p0.get("leverage") or 0) or 10.0
+                if entry_price <= 0 or qty <= 0 or lv <= 0:
+                    raise ValueError("entry_price/quantity/leverage invalid")
+
+                def _ratio(v, default):
+                    try:
+                        x = float(v)
+                        # 兼容：若误存成 5（表示5%），则转为 0.05
+                        if x > 1:
+                            x = x / 100.0
+                        if x < 0:
+                            x = default
+                        return x
+                    except Exception:
+                        return default
+
+                sl_pct = _ratio(TradingConfig.get_value("STOP_LOSS_PERCENT", 0.05), 0.05)
+                tp_pct = _ratio(TradingConfig.get_value("TAKE_PROFIT_PERCENT", 0.15), 0.15)
+
+                notional = entry_price * qty
+                margin = notional / lv
+                sl_amount = margin * sl_pct
+                tp_amount = margin * tp_pct
+
+                if side == "BUY":
+                    sl = entry_price - (sl_amount / qty)
+                    tp = entry_price + (tp_amount / qty)
+                else:
+                    sl = entry_price + (sl_amount / qty)
+                    tp = entry_price - (tp_amount / qty)
+
+                if not sl or not tp or sl <= 0 or tp <= 0:
+                    raise ValueError("computed sl/tp invalid")
+            except Exception:
+                raise HTTPException(status_code=400, detail=f"{symbol} 数据库缺少止损/止盈价，且无法回退计算，无法补挂")
 
         # 5) 取消旧的保护单，避免重复
         try: