查询指数，若无参数，默认返回空列表

src/main/java/com/tanpu/fund/api/ProductApi.java

@@ -91,7 +91,7 @@ public interface ProductApi {
 
     @ApiOperation("历史业绩 对比指数")
     @GetMapping("/track/recor/index")
-    CommonResp<List<TrackRecordVO>> getTrackRecordInfoIndex(@ApiParam("对比指数ID") @RequestParam("indexId") String indexId);
+    CommonResp<List<TrackRecordVO>> getTrackRecordInfoIndex(@ApiParam("对比指数ID") @RequestParam(name = "indexId", required = false) String indexId);
 
     @ApiOperation("历史净值")
     @GetMapping("/track/net")

src/main/java/com/tanpu/fund/controller/ProductController.java

@@ -25,6 +25,8 @@ import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.multipart.MultipartFile;
 
 import javax.annotation.Resource;
+import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 @RestController
@@ -86,6 +88,9 @@ public class ProductController implements ProductApi {
 
     @Override
     public CommonResp<List<TrackRecordVO>> getTrackRecordInfoIndex(String indexId) {
+        if (StringUtils.isBlank(indexId)) {
+            return CommonResp.success(Collections.emptyList());
+        }
         return feignClientForPublicfund.getTrackRecordInfoIndex(indexId);
     }