GlobalAward返回最大的参赛者编号

src/main/java/com/ai/da/controller/GlobalAwardController.java

@@ -4,6 +4,7 @@ import com.ai.da.common.response.Response;
 import com.ai.da.model.dto.*;
 import com.ai.da.model.dto.ContestantDTO;
 import com.ai.da.model.vo.CheckOTPVO;
+import com.ai.da.model.vo.ContestantCountVO;
 import com.ai.da.service.GlobalAwardService;
 import com.ai.da.service.upload.UploadService;
 import com.ai.da.service.upload.UploadTask;
@@ -192,8 +193,8 @@ public class GlobalAwardController {
     }
 
     @GetMapping("/contestants/count")
-    @ApiOperation(value = "查询参赛者总数", notes = "查询数据库中参赛者的总数量")
-    public Response<Long> getContestantCount() {
+    @ApiOperation(value = "查询参赛者总数", notes = "查询数据库中参赛者的总数量和最大参赛者编号")
+    public Response<ContestantCountVO> getContestantCount() {
         return Response.success(globalAwardService.getContestantCount());
     }
 

src/main/java/com/ai/da/service/GlobalAwardService.java

@@ -2,6 +2,7 @@ package com.ai.da.service;
 
 import com.ai.da.model.dto.ContestantDTO;
 import com.ai.da.model.vo.CheckOTPVO;
+import com.ai.da.model.vo.ContestantCountVO;
 import org.springframework.web.multipart.MultipartFile;
 
 import java.util.Map;
@@ -41,10 +42,10 @@ public interface GlobalAwardService {
     byte[] exportContestantFilesAsZip(Integer minContestantNumber, Integer maxContestantNumber) throws Exception;
 
     /**
-     * 查询参赛者总数
-     * @return 参赛者数量
+     * 查询参赛者总数和最大参赛者编号
+     * @return 参赛者数量和最大参赛者编号
      */
-    long getContestantCount();
+    ContestantCountVO getContestantCount();
 }
 
 

src/main/java/com/ai/da/service/impl/GlobalAwardServiceImpl.java

@@ -12,6 +12,7 @@ import com.ai.da.mapper.primary.entity.Notification;
 import com.ai.da.model.dto.ContestantDTO;
 import com.ai.da.model.dto.PublishSysNotificationDTO;
 import com.ai.da.model.vo.CheckOTPVO;
+import com.ai.da.model.vo.ContestantCountVO;
 import com.ai.da.service.GlobalAwardService;
 import com.ai.da.service.MessageCenterService;
 import com.alibaba.fastjson.JSON;
@@ -592,8 +593,21 @@ public class GlobalAwardServiceImpl implements GlobalAwardService {
     }
 
     @Override
-    public long getContestantCount() {
-        return contestantMapper.selectCount(null);
+    public ContestantCountVO getContestantCount() {
+        long count = contestantMapper.selectCount(null);
+        Integer maxContestantNumber = null;
+        QueryWrapper<Contestant> qMax = new QueryWrapper<>();
+        qMax.isNotNull("contestant_number");
+        qMax.orderByDesc("contestant_number");
+        qMax.last("LIMIT 1");
+        Contestant last = contestantMapper.selectOne(qMax);
+        if (last != null) {
+            maxContestantNumber = last.getContestantNumber();
+        }
+        return ContestantCountVO.builder()
+                .count(count)
+                .maxContestantNumber(maxContestantNumber)
+                .build();
     }
 
     private String nullSafe(String value) {