2140110310
/
teaching_backend
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

学习记录优化查询速度

Browse Source
master
wenyu441069198 4 months ago
parent 87ac8ad505
commit 395f909cf2
7 changed files with 102 additions and 101 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 26
      pom.xml
  2. 12
      src/main/java/com/teaching/backend/controller/records/CourseLearningRecordController.java
  3. 21
      src/main/java/com/teaching/backend/controller/records/LearningRecordsController.java
  4. 15
      src/main/java/com/teaching/backend/model/entity/records/LearningRecords.java
  5. 2
      src/main/java/com/teaching/backend/model/vo/records/LearningRecordsVo.java
  6. 125
      src/main/java/com/teaching/backend/service/impl/records/LearningRecordsServiceImpl.java
  7. 2
      src/main/java/com/teaching/backend/service/records/LearningRecordsService.java

26
pom.xml
Unescape View File

@ -39,63 +39,49 @@
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.11.0</version>
</dependency>
<!-- freemarker jar -->
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>2.3.28</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.2.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus-boot-starter -->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.5.2</version>
</dependency>
<!-- Apache POI -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>4.1.2</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>4.1.2</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>4.1.2</version>
</dependency>
<dependency>
<groupId>com.aliyun.oss</groupId>
<artifactId>aliyun-sdk-oss</artifactId>
<version>3.15.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
@ -111,20 +97,17 @@
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- https://doc.xiaominfo.com/docs/quick-start#openapi2 -->
<dependency>
<groupId>com.github.xiaoymin</groupId>
<artifactId>knife4j-openapi2-spring-boot-starter</artifactId>
<version>4.4.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
@ -193,20 +176,23 @@
<version>2.12.5</version>
<scope>compile</scope>
</dependency>
<!--easypoi-->
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-spring-boot-starter</artifactId>
<version>4.1.3</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.8.0</version>
</dependency>
<!--redis-->
<dependency>
<groupId>org.redisson</groupId>
<artifactId>redisson</artifactId>
<version>3.13.6</version>
</dependency>
</dependencies>

12
src/main/java/com/teaching/backend/controller/records/CourseLearningRecordController.java
Unescape View File

@ -0,0 +1,12 @@
package com.teaching.backend.controller.records;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/api/courselearingRecord")
public class CourseLearningRecordController {
}

21
src/main/java/com/teaching/backend/controller/records/LearningRecordsController.java
Unescape View File

@ -1,6 +1,7 @@
package com.teaching.backend.controller.records;
import com.baomidou.mybatisplus.extension.conditions.query.QueryChainWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.teaching.backend.common.BaseResponse;
import com.teaching.backend.common.ResultUtils;
@ -37,17 +38,19 @@ public class LearningRecordsController {
public BaseResponse<Page> getAll(@RequestParam(value = "pagenum", defaultValue = "1") int pagenum,
@RequestParam(value = "pagesize", defaultValue = "10") int pagesize,
@RequestParam String userId){
//根据用户查询
Page<LearningRecords> page = learningRecordsService.query()
.orderByDesc("time")
.eq("status", "1")
.eq("user_id", userId).page(new Page<>(pagenum, pagesize));
//获取当前页数据
List<LearningRecords> list = page.getRecords();
List<LearningRecordsVo> cs= learningRecordsService.getAll(list);
List<LearningRecordsVo> cs= learningRecordsService.getAll(userId);
List<LearningRecordsVo> pageCs = new ArrayList<>();
//当前页面
for(int i = (pagenum - 1) * pagesize; i < cs.size() && i < (pagenum) * pagesize; i++){
pageCs.add(cs.get(i));
}
long total = cs.size(); // 总记录数
long total = page.getTotal(); // 总记录数
Page<LearningRecordsVo> pageInfo = new Page<>(pagenum,pagesize,total);
pageInfo.setRecords(pageCs);
pageInfo.setPages((int)(Math.ceil((double) total / pagesize)));//设置总页数
pageInfo.setRecords(cs);
pageInfo.setPages(page.getPages());//设置总页数
return ResultUtils.success(pageInfo);
}

15
src/main/java/com/teaching/backend/model/entity/records/LearningRecords.java
Unescape View File

@ -2,6 +2,7 @@ package com.teaching.backend.model.entity.records;
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;
@ -36,7 +37,7 @@ public class LearningRecords {
/**
* 访问时间
*/
private LocalDateTime accessTime;
private LocalDateTime time;
/**
* 学习方式:打开; 1,打开过,2未打开
@ -74,11 +75,11 @@ public class LearningRecords {
*/
private String type;
/**
* 父节点
* 课程名称
*/
private String parentNode;
private String coursesName;
/**
* 课程名称
*/
private int number;
}

2
src/main/java/com/teaching/backend/model/vo/records/LearningRecordsVo.java
Unescape View File

@ -33,7 +33,7 @@ public class LearningRecordsVo {
/**
* 资源观看人数
*/
private Long number;
private int number;
/**

125
src/main/java/com/teaching/backend/service/impl/records/LearningRecordsServiceImpl.java
Unescape View File

@ -12,7 +12,6 @@ import com.teaching.backend.mapper.records.LearningRecordsMapper;
import com.teaching.backend.model.entity.records.LearningRecords;
import com.teaching.backend.model.vo.records.LearningRecordsVo;
import com.teaching.backend.service.impl.CourseResourcesServiceImpl;
import com.teaching.backend.service.impl.chapter.ChapterServiceImpl;
import com.teaching.backend.service.impl.courses.CoursesServiceImpl;
import com.teaching.backend.service.records.LearningRecordsService;
import org.springframework.beans.BeanUtils;
@ -36,8 +35,8 @@ public class LearningRecordsServiceImpl extends ServiceImpl<LearningRecordsMappe
private LearningRecordsMapper learningRecordsMapper;
@Autowired
private CourseResourcesServiceImpl courseResourcesService;
@Autowired
private ChapterServiceImpl chapterService;
// @Autowired
// private ChapterServiceImpl chapterService;
@Override
public IPage<LearningRecords> selectPageList(Page<LearningRecords> page, LearningRecords model) {
@ -53,76 +52,64 @@ public class LearningRecordsServiceImpl extends ServiceImpl<LearningRecordsMappe
for (LearningRecords learningRecords : list) {
learningRecords.setStatus("0");
}
this.updateBatchById(list);
updateBatchById(list);
// System.out.println(this.updateBatchById(list));
// this.remove(lambdaQueryWrapper);
return "删除成功";
}
@Override
public List<LearningRecordsVo> getAll(String userId){
//格式化时间
public List<LearningRecordsVo> getAll(List<LearningRecords> list){
List<LearningRecordsVo> records = new ArrayList<>();
//格式化时间
String strDateFormat = "yyyy-MM-dd HH:mm:ss";
SimpleDateFormat sdf = new SimpleDateFormat(strDateFormat);
List<LearningRecordsVo> list = new ArrayList<>();
//将学习记录实体转成学习记录Vo实体
LambdaQueryWrapper<LearningRecords> lambdaQueryWrapper1 = new LambdaQueryWrapper<>();
lambdaQueryWrapper1
.orderByDesc(LearningRecords::getAccessTime)
.eq(LearningRecords::getUserId, userId)
.eq(LearningRecords::getStatus, "1");
// System.out.println("查询数据库结果为:"+this.list(lambdaQueryWrapper1));
//如果为空-------------------?????
for (LearningRecords learningRecords : this.list(lambdaQueryWrapper1)) {
//查找该用户的学习记录
// if (learningRecords.getUserId().equals(userId) && learningRecords.getStatus().equals("1")){
LearningRecordsVo learningRecordsVo = new LearningRecordsVo();//好像可以拿出去-----------??
BeanUtils.copyProperties(learningRecords,learningRecordsVo);//从多传到少(缺少人数,和资源名称,时间需要转格式)
//添加时间
//LocalDateTime转Date
Date date = Date.from(learningRecords.getAccessTime().atZone(ZoneId.systemDefault()).toInstant());
learningRecordsVo.setTime(sdf.format(date));
LambdaQueryWrapper<LearningRecords> lambdaQueryWrapper = new LambdaQueryWrapper<>();
lambdaQueryWrapper.eq(LearningRecords::getCoursesId, learningRecords.getCoursesId());
// System.out.println(learningRecords.getResourceId());
// System.out.println("1");
String name;
//添加课程名称
switch (learningRecords.getType()) {
case "4": //如果是资源学习
learningRecordsVo.setCoursesName(courseResourcesService.getById(learningRecords.getCoursesId()).getName());//设置名称 --------------------------------------------待完善
break;
case "3": //如果是知识点学习记录
// learningRecordsVo.setCoursesName(knowledgePointService.getById(learningRecords.getCoursesId()).get());
// if (knowledgePointService.getById(learningRecords.getCoursesId()) != null){
// name=knowledgePointService.getById(learningRecords.getCoursesId()).getName();
// }else {
// name = "查无次记录";
list.forEach(learningRecords -> {
LearningRecordsVo learningRecordsVo = new LearningRecordsVo();//好像可以拿出去-----------??
BeanUtils.copyProperties(learningRecords,learningRecordsVo);//从多传到少(时间需要转格式)
Date date = Date.from(learningRecords.getTime().atZone(ZoneId.systemDefault()).toInstant());
learningRecordsVo.setTime(sdf.format(date));
// //统计记录表里有多少人查看过这门资源
// LambdaQueryWrapper<LearningRecords> lambdaQueryWrapper = new LambdaQueryWrapper<>();
// lambdaQueryWrapper.eq(LearningRecords::getCoursesId, learningRecords.getCoursesId());
// long count = this.count(lambdaQueryWrapper);
learningRecordsVo.setNumber(learningRecords.getNumber());
//把整合后该用户的学习记录添加到List里
records.add(learningRecordsVo);
});
// for (LearningRecords learningRecords : list) {
// //查找该用户的学习记录
// LearningRecordsVo learningRecordsVo = new LearningRecordsVo();//好像可以拿出去-----------??
// BeanUtils.copyProperties(learningRecords,learningRecordsVo);//从多传到少(缺少人数,和资源名称,时间需要转格式)
// //添加时间
// //LocalDateTime转Date
// Date date = Date.from(learningRecords.getTime().atZone(ZoneId.systemDefault()).toInstant());
// learningRecordsVo.setTime(sdf.format(date));
// LambdaQueryWrapper<LearningRecords> lambdaQueryWrapper = new LambdaQueryWrapper<>();
// lambdaQueryWrapper.eq(LearningRecords::getCoursesId, learningRecords.getCoursesId());
// String name;
// //添加课程名称
// switch (learningRecords.getType()) {
// case "4": //如果是资源学习
// if (courseResourcesService.getById(learningRecords.getCoursesId()) != null){
// learningRecordsVo.setCoursesName(courseResourcesService.getById(learningRecords.getCoursesId()).getName());
// }
// learningRecordsVo.setCoursesName(knowledgePointService.getById(learningRecords.getCoursesId()).getName());
//如果对应的资源不存在
break;
case "2": //如果是章节学习记录
learningRecordsVo.setCoursesName(chapterService.getById(learningRecords.getCoursesId()).getName());
//如果对应的资源不存在
break;
case "1": //如果是课程学习记录
learningRecordsVo.setCoursesName(coursesService.getById(learningRecords.getCoursesId()).getName());
break;
}
//添加观看人数
//统计记录表里有多少人查看过这门资源
long count = this.count(lambdaQueryWrapper);
learningRecordsVo.setNumber(count);
//把整合后该用户的学习记录添加到List里
list.add(learningRecordsVo);
// break;
// case "1": //如果是课程学习记录
// if (coursesService.getById(learningRecords.getCoursesId()) != null){
// learningRecordsVo.setCoursesName(coursesService.getById(learningRecords.getCoursesId()).getName());
// }
// break;
// }
}
// System.out.println("查询后结果:"+list);
return list;
// //添加观看人数
// //统计记录表里有多少人查看过这门资源
// long count = this.count(lambdaQueryWrapper);
// learningRecordsVo.setNumber(count);
// //把整合后该用户的学习记录添加到List里
// records.add(learningRecordsVo);
// }
return records;
}
/**
@ -148,14 +135,26 @@ public class LearningRecordsServiceImpl extends ServiceImpl<LearningRecordsMappe
.eq(LearningRecords::getCoursesId, coursesId)
.eq(LearningRecords::getType, learningRecords.getType());
long count = this.count(lambdaQueryWrapper);
System.out.println("数据库："+count);
//System.out.println("数据库："+count);
learningRecords.setStatus("1");//将该记录的状态设置为1
//更新观看时间
learningRecords.setAccessTime(LocalDateTime.now());
learningRecords.setTime(LocalDateTime.now());
//设置默认封面
if (learningRecords.getContent() == null || learningRecords.getContent().equals("")){
learningRecords.setContent("img/v2-c57eb7863ec4233f503176ca3f90f8d5_1440w.png");
}
List<LearningRecords> list = query().eq("courses_id", coursesId).eq("type", learningRecords.getType()).list();
int number;
if (list != null){
number = list.get(0).getNumber() + 1;
learningRecords.setNumber(number);
list.forEach(learningRecords1 -> {
learningRecords1.setNumber(number);
});
} else {
number = 0;
}
updateBatchById(list);
if (count == 0){//如果没有就新增并记录学习方式是打开还是下载
//根据传上来的type设置
// learningRecords.setType(learningRecords.getType());

2
src/main/java/com/teaching/backend/service/records/LearningRecordsService.java
Unescape View File

@ -10,7 +10,7 @@ import com.teaching.backend.model.vo.records.LearningRecordsVo;
import java.util.List;
public interface LearningRecordsService extends IService<LearningRecords> {
public List<LearningRecordsVo> getAll(String username);
public List<LearningRecordsVo> getAll(List<LearningRecords> list);
public String saveRecords(LearningRecords learningRecords);
IPage<LearningRecords> selectPageList(Page<LearningRecords> page, LearningRecords model);

Write Preview
Loading…
Cancel
Save