修改老师端饼状图接口返回格式

src/main/java/com/sztzjy/fund_investment/controller/SysLogController.java

@@ -1,6 +1,5 @@
 package com.sztzjy.fund_investment.controller;
 
-import cn.hutool.core.date.DateTime;
 import com.sztzjy.fund_investment.annotation.AnonymousAccess;
 import com.sztzjy.fund_investment.entity.*;
 import com.sztzjy.fund_investment.mapper.IpLogMapper;
@@ -11,10 +10,10 @@ import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
-import java.time.*;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
 import java.time.temporal.ChronoUnit;
 import java.util.*;
-import java.util.concurrent.ThreadLocalRandom;
 
 //用于生成日志文件
 @RestController

src/main/java/com/sztzjy/fund_investment/service/serviceImpl/TrainingReportService.java

@@ -1,12 +0,0 @@
-package com.sztzjy.fund_investment.service.serviceImpl;
-
-import org.springframework.stereotype.Service;
-
-/**
- * @Author xcj
- * @Date 2023/11/14
- */
-@Service
-public class TrainingReportService {
-
-}

src/main/java/com/sztzjy/fund_investment/service/serviceImpl/tea/ClassScoreServiceImpl.java

@@ -137,7 +137,7 @@ public class ClassScoreServiceImpl implements ClassScoreService {
             criteria.andClassIdEqualTo(classId).andStartTimeEqualTo(time);
             List<TeaClassScore> teaClassScores = teaClassScoreMapper.selectByExample(teaClassScoreExample);
             if (teaClassScores.isEmpty()){
-                return null;
+                return new TeaClassScoreDto();
             }
             TeaClassScore teaClassScore = teaClassScores.get(0);
             TeaClassScoreDto teaClassScoreDto = new TeaClassScoreDto();