src/main/java/com/ycl/jxkg/config/CaffeineConfig.java

@@ -26,7 +26,7 @@
                .build();
        // 初始化认证缓存、学习时长缓存
        caffeineCache.put(CaffeineConstant.AUTH, new HashMap<>(128));
        caffeineCache.put(CaffeineConstant.AUTH, new HashMap<>(128));
        caffeineCache.put(CaffeineConstant.STUDY_RECORD, new HashMap<>(128));
        return caffeineCache;
    }
}

 src/main/java/com/ycl/jxkg/constants/CaffeineConstant.java

@@ -14,4 +14,9 @@
     */
    public final static String AUTH = "AUTH";

    /**
     * 记录学习时长
     *
     */
    public final static String STUDY_RECORD ="STUDY_RECORD";
}

 src/main/java/com/ycl/jxkg/controller/student/SubjectController.java

New file
@@ -0,0 +1,31 @@
package com.ycl.jxkg.controller.student;


import com.github.pagehelper.PageInfo;
import com.ycl.jxkg.base.BaseApiController;
import com.ycl.jxkg.base.Result;
import com.ycl.jxkg.domain.entity.Subject;
import com.ycl.jxkg.domain.vo.admin.education.SubjectEditRequestVO;
import com.ycl.jxkg.domain.vo.admin.education.SubjectPageRequestVO;
import com.ycl.jxkg.domain.vo.admin.education.SubjectResponseVO;
import com.ycl.jxkg.service.SubjectService;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.BeanUtils;
import org.springframework.web.bind.annotation.*;

import javax.validation.Valid;
import java.util.List;

@RequiredArgsConstructor
@RestController("StudentSubjectController")
@RequestMapping(value = "/api/student/subject")
public class SubjectController extends BaseApiController {

    private final SubjectService subjectService;

    @RequestMapping(value = "/list", method = RequestMethod.POST)
    public Result<List<Subject>> list() {
        List<Subject> subjects = subjectService.allSubject();
        return Result.ok(subjects);
    }
}

 src/main/java/com/ycl/jxkg/job/StudyRecordJob.java

@@ -2,6 +2,7 @@

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.github.benmanes.caffeine.cache.Cache;
import com.ycl.jxkg.constants.CaffeineConstant;
import com.ycl.jxkg.domain.entity.StudyRecord;
import com.ycl.jxkg.mapper.StudyRecordMapper;
import com.ycl.jxkg.service.StudyRecordService;
@@ -36,15 +37,13 @@
    private void updateStudyRecord() {
        log.info("开始存学习时长");
        List<StudyRecord> cacheList = new ArrayList<>();
        // 取出所有缓存项
        // 取出所有学习记录缓存项
        ConcurrentMap<String, Object> map = caffeineCache.asMap();
        for (Map.Entry<String, Object> entry : map.entrySet()) {
            String key = entry.getKey();
            if (key.startsWith("STUDENT_")) {
                StudyRecord studyRecord = (StudyRecord) entry.getValue();
                cacheList.add(studyRecord);
            }
        Map<String,StudyRecord> studyMap = (Map<String, StudyRecord>) map.get(CaffeineConstant.STUDY_RECORD);
        for (Map.Entry<String, StudyRecord> entry : studyMap.entrySet()) {
            cacheList.add(entry.getValue());
        }

        List<Integer> studentIds = cacheList.stream().map(StudyRecord::getStudentId).collect(Collectors.toList());
        if (!CollectionUtils.isEmpty(studentIds)) {
            //数据库中已经存在的学生数据
@@ -62,7 +61,7 @@
            }
            studyRecordService.saveOrUpdateBatch(cacheList);
        }
        caffeineCache.invalidateAll(map.keySet());
        caffeineCache.invalidate(CaffeineConstant.STUDY_RECORD);
        log.info("结束存学习时长");
    }
}