update top gainer and loser

src/main/java/cn/stock/market/dto/TradingViewData.java

@@ -0,0 +1,13 @@
+package cn.stock.market.dto;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import lombok.Data;
+
+import java.util.List;
+
+@Data
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class TradingViewData {
+    private String s; // symbol
+    private List<Object> d; // data array
+} 

src/main/java/cn/stock/market/dto/TradingViewResponse.java

@@ -0,0 +1,13 @@
+package cn.stock.market.dto;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import lombok.Data;
+
+import java.util.List;
+
+@Data
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class TradingViewResponse {
+    private int totalCount;
+    private List<TradingViewData> data;
+}