分数页面增加分页

Author: YXJ2018

springboot/src/main/java/com/exam/controller/ScoreController.java

@@ -1,6 +1,9 @@
 package com.exam.controller;
 
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.exam.entity.ApiResult;
+import com.exam.entity.Message;
 import com.exam.entity.Score;
 import com.exam.serviceimpl.ScoreServiceImpl;
 import com.exam.util.ApiResultHandler;
@@ -20,14 +23,11 @@ public ApiResult findAll() {
  return ApiResultHandler.buildApiResult(200,"查询所有学生成绩",res);
  }
 
- @GetMapping("/score/{studentId}")
- public ApiResult findById(@PathVariable("studentId") Integer studentId) {
- List<Score> res = scoreService.findById(studentId);
- if (!res.isEmpty()) {
- return ApiResultHandler.buildApiResult(200,"根据ID查询成绩",res);
- }else {
- return ApiResultHandler.buildApiResult(400,"ID不存在",res);
- }
+ @GetMapping("/score/{page}/{size}/{studentId}")
+ public ApiResult findById(@PathVariable("page") Integer page, @PathVariable("size") Integer size, @PathVariable("studentId") Integer studentId) {
+ Page<Score> scorePage = new Page<>(page, size);
+ IPage<Score> res = scoreService.findById(scorePage, studentId);
+ return ApiResultHandler.buildApiResult(200, "根据ID查询成绩", res);
  }
 
  @PostMapping("/score")

springboot/src/main/java/com/exam/mapper/ScoreMapper.java

@@ -1,5 +1,7 @@
 package com.exam.mapper;
 
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.exam.entity.Score;
 import org.apache.ibatis.annotations.Insert;
 import org.apache.ibatis.annotations.Mapper;
@@ -18,11 +20,11 @@ public interface ScoreMapper {
  @Insert("insert into score(examCode,studentId,subject,ptScore,etScore,score,answerDate) values(#{examCode},#{studentId},#{subject},#{ptScore},#{etScore},#{score},#{answerDate})")
  int add(Score score);
 
- @Select("select scoreId,examCode,studentId,subject,ptScore,etScore,score,answerDate from score")
+ @Select("select scoreId,examCode,studentId,subject,ptScore,etScore,score,answerDate from score order by scoreId desc")
  List<Score> findAll();
 
- @Select("select scoreId,examCode,studentId,subject,ptScore,etScore,score,answerDate from score where studentId = #{studentId}")
- List<Score> findById(Integer studentId);
+ @Select("select scoreId,examCode,studentId,subject,ptScore,etScore,score,answerDate from score where studentId = #{studentId} order by scoreId desc")
+ IPage<Score> findById(Page<?> page, Integer studentId);
 
  /**
  *

springboot/src/main/java/com/exam/service/ScoreService.java

@@ -1,5 +1,7 @@
 package com.exam.service;
 
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.exam.entity.Score;
 
 import java.util.List;
@@ -9,7 +11,7 @@ public interface ScoreService {
 
  List<Score> findAll();
 
- List<Score> findById(Integer studentId);
+ IPage<Score> findById(Page page, Integer studentId);
 
  List<Score> findByExamCode(Integer examCode);
 }

springboot/src/main/java/com/exam/serviceimpl/ScoreServiceImpl.java

@@ -1,5 +1,7 @@
 package com.exam.serviceimpl;
 
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.exam.entity.Score;
 import com.exam.mapper.ScoreMapper;
 import com.exam.service.ScoreService;
@@ -24,8 +26,8 @@ public List<Score> findAll() {
  }
 
  @Override
- public List<Score> findById(Integer studentId) {
- return scoreMapper.findById(studentId);
+ public IPage<Score> findById(Page page, Integer studentId) {
+ return scoreMapper.findById(page, studentId);
  }
 
  @Override