update

src/main/java/cn/stock/market/web/MoneyApiController.java

@@ -213,6 +213,7 @@ public class MoneyApiController {
             return ServerResponse.createByErrorMsg("Stock is not exist!");
         }
         StockQuoteData data = moneyApiService.getSingleStockQuote(symbol);
+        data.setName(stock.getStockName());
         return ServerResponse.createBySuccess(data);
     }
 
@@ -592,7 +593,7 @@ public class MoneyApiController {
     @ResponseBody
     @EncryptFilter(decryptRequest = false)
 
-    public List<MoneyStockSuggestDTO> getTopLoser(@RequestParam String stockType) {
+    public List<MoneyStockSuggestDTO> getTopLoser(@RequestParam(required = false) String stockType) {
         List<MoneyStockSuggestDTO> moneyStockSuggestDTOS = null;
         List<StockQuoteData> stockQuoteDataList = moneyApiService.getTopLosersFromTradingView();
         moneyStockSuggestDTOS = convertStockQuoteDataToMoneyStockSuggestDTO(stockQuoteDataList);

src/main/java/cn/stock/market/web/service/MoneyApiService.java

@@ -175,6 +175,9 @@ public class MoneyApiService {
     public List<StockQuoteData> getTopStocksFromTradingView(String sortOrder) {
         String url = "https://scanner.tradingview.com/germany/scan";
         
+        // Determine preset based on sort order
+        String preset = "desc".equals(sortOrder) ? "gainers" : "losers";
+        
         // Prepare request body
         String requestBody = "{\n" +
                 "    \"columns\": [\n" +
@@ -198,6 +201,7 @@ public class MoneyApiService {
                 "    \"options\": {\n" +
                 "        \"lang\": \"en\"\n" +
                 "    },\n" +
+                "    \"preset\": \"" + preset + "\",\n" +
                 "    \"range\": [\n" +
                 "        0,\n" +
                 "        30\n" +
@@ -241,14 +245,7 @@ public class MoneyApiService {
                     
                     if (!stocks.isEmpty()) {
                         // Get real-time quotes for these stocks
-                        List<StockQuoteData> stockQuoteDatas = getStocksQuote(stocks);
-                        for (StockQuoteData stockQuoteData : stockQuoteDatas) {
-                            Stock name = stocks.stream().filter(e->e.getStockCode().equals(stockQuoteData.getSymbol())).findFirst().orElse(null);
-                            if (name != null) {
-                                stockQuoteData.setName(name.getStockName());
-                            }
-                        }
-                        return stockQuoteDatas;
+                        return getStocksQuote(stocks);
                     }
                 }
             }