diff --git a/RollCallServer/src/main/java/cc/aspark/controller/StudentController.java b/RollCallServer/src/main/java/cc/aspark/controller/StudentController.java new file mode 100644 index 0000000..5154c05 --- /dev/null +++ b/RollCallServer/src/main/java/cc/aspark/controller/StudentController.java @@ -0,0 +1,77 @@ +package cc.aspark.controller; + + +import cc.aspark.domain.dto.PageQueryDTO; +import cc.aspark.domain.dto.StudentDTO; +import cc.aspark.domain.entity.Student; +import cc.aspark.result.PageResult; +import cc.aspark.result.Result; +import cc.aspark.service.StudentService; +import io.swagger.v3.oas.annotations.Operation; +import io.swagger.v3.oas.annotations.tags.Tag; +import jakarta.servlet.http.HttpServletResponse; +import lombok.Builder; +import lombok.RequiredArgsConstructor; +import lombok.extern.slf4j.Slf4j; +import org.springframework.web.bind.annotation.*; +import org.springframework.web.multipart.MultipartFile; + +import java.util.List; + +@Slf4j +@RestController +@RequestMapping("/student") +@RequiredArgsConstructor +@Builder +@Tag(name = "学生表相关操作") +public class StudentController { + + private final StudentService studentService; + + @Operation(summary = "查询全部学生信息") + @GetMapping + public Result> list() { + List studentList = studentService.list(); + return Result.success(studentList); + } + + @Operation(summary = "根据 id 查询学生信息") + @GetMapping("/{id}") + public Result getStuInfoById(@PathVariable Integer id) { + Student stuInfo = studentService.getById(id); + return Result.success(stuInfo); + } + + @Operation(summary = "学生信息分页查询") + @GetMapping("/page") + public Result> pageStuInfo(PageQueryDTO pageQueryDTO) { + log.info("学生信息分页查询: {}", pageQueryDTO); + PageResult pageResult = studentService.page(pageQueryDTO); + return Result.success(pageResult); + } + + @Operation(summary = "新增学生信息") + @PostMapping + public Result save(@RequestBody StudentDTO studentDTO) { + studentService.save(studentDTO); + return Result.success(); + } + + + @Operation(summary = "更新学生信息") + @PutMapping + public Result updateStu(@RequestBody StudentDTO studentDTO) { + studentService.updateStu(studentDTO); + return Result.success(); + } + + @Operation(summary = "删除学生信息") + @DeleteMapping("/{ids}") + public Result deleteStus(@PathVariable List ids) { + studentService.removeByIds(ids); + return Result.success(); + } + + + +} diff --git a/RollCallServer/src/main/java/cc/aspark/mapper/StudentMapper.java b/RollCallServer/src/main/java/cc/aspark/mapper/StudentMapper.java new file mode 100644 index 0000000..4a234a7 --- /dev/null +++ b/RollCallServer/src/main/java/cc/aspark/mapper/StudentMapper.java @@ -0,0 +1,18 @@ +package cc.aspark.mapper; + +import cc.aspark.domain.entity.Student; +import com.baomidou.mybatisplus.core.mapper.BaseMapper; + +/** +* @author night +* @description 针对表【tb_stu(学生信息表)】的数据库操作Mapper +* @createDate 2024-10-02 16:31:44 +* @Entity generator.domain.TbStu +*/ +public interface StudentMapper extends BaseMapper { + +} + + + + diff --git a/RollCallServer/src/main/java/cc/aspark/service/StudentService.java b/RollCallServer/src/main/java/cc/aspark/service/StudentService.java new file mode 100644 index 0000000..6b5cd28 --- /dev/null +++ b/RollCallServer/src/main/java/cc/aspark/service/StudentService.java @@ -0,0 +1,24 @@ +package cc.aspark.service; + +import cc.aspark.domain.dto.PageQueryDTO; +import cc.aspark.domain.dto.StudentDTO; +import cc.aspark.domain.entity.Student; +import cc.aspark.result.PageResult; +import com.baomidou.mybatisplus.extension.service.IService; +import jakarta.servlet.http.HttpServletResponse; +import org.springframework.web.multipart.MultipartFile; + +/** +* @author night +* @description 针对表【tb_stu(学生信息表)】的数据库操作Service +* @createDate 2024-10-02 16:31:44 +*/ +public interface StudentService extends IService { + + void updateStu(StudentDTO studentDTO); + + PageResult page(PageQueryDTO pageQueryDTO); + + void save(StudentDTO studentDTO); + +} diff --git a/RollCallServer/src/main/java/cc/aspark/service/impl/StudentServiceImpl.java b/RollCallServer/src/main/java/cc/aspark/service/impl/StudentServiceImpl.java index 55209a8..f464e3c 100644 --- a/RollCallServer/src/main/java/cc/aspark/service/impl/StudentServiceImpl.java +++ b/RollCallServer/src/main/java/cc/aspark/service/impl/StudentServiceImpl.java @@ -6,7 +6,9 @@ import cc.aspark.domain.dto.PageQueryDTO; import cc.aspark.domain.dto.StudentDTO; import cc.aspark.domain.entity.Student; import cc.aspark.exception.BaseException; +import cc.aspark.mapper.StudentMapper; import cc.aspark.result.PageResult; +import cc.aspark.service.StudentService; import cn.hutool.core.bean.BeanUtil; import cn.hutool.core.io.IoUtil; import cn.hutool.poi.excel.ExcelReader; @@ -125,152 +127,5 @@ public class StudentServiceImpl extends ServiceImpl baseMapper.insert(student); } - @Override - public Student rollCall() { - List studentList = this.list(); - - if (studentList.isEmpty()) { - throw new RuntimeException("学生列表为空"); - } - - // 找出最高积分，用于计算反向权重 - final double maxPoints = studentList.stream() - .mapToDouble(Student::getPoints) - .max() - .orElse(0.0) + 1.0; - - // 计算总的反向权重 - double totalInverseWeights = studentList.stream() - .mapToDouble(student -> maxPoints - student.getPoints()) - .sum(); - - // 生成一个0到总反向权重之间的随机数 - Random random = new Random(); - double randomValue = random.nextDouble() * totalInverseWeights; - - // 使用累加器方法选择学生 - double accumulatedWeight = 0; - for (Student student : studentList) { - // 计算该学生的反向权重 - double inverseWeight = maxPoints - student.getPoints(); - accumulatedWeight += inverseWeight; - if (accumulatedWeight >= randomValue) { - return student; - } - } - - // 以防万一，返回最后一个学生 - return studentList.get(studentList.size() - 1); - } - - @Override - public void importStudentsByExcel(MultipartFile file) { - try { - ExcelReader reader = ExcelUtil.getReader(file.getInputStream()); - reader .addHeaderAlias("学号", "no") - .addHeaderAlias("姓名", "name") - .addHeaderAlias("性别", "gender") - .addHeaderAlias("班级", "className") - .addHeaderAlias("积分", "credits") - .addHeaderAlias("创建时间", "createTime") - .addHeaderAlias("最后操作时间", "updateTime"); - List> rows = reader.readAll(); - LocalDateTime now = LocalDateTime.now(); - DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"); - List studentList = rows.stream().map(row -> { - Student student = new Student(); - student.setNo(row.get("no").toString()); - student.setName(row.get("name").toString()); - student.setGender("男".equals(row.get("gender")) ? (short) 0 : (short) 1); - student.setClassName(row.get("className").toString()); - student.setCreator(Integer.valueOf(BaseContext.getCurrentId().toString())); - if (row.get("credits") == null) { - student.setPoints(0.00); - } else { - student.setPoints(Double.valueOf(row.get("credits").toString())); - } - - if (row.get("createTime") == null) { - student.setCreateTime(now); - } else { - String createTimeStr = row.get("createTime").toString(); - student.setCreateTime(LocalDateTime.parse(createTimeStr, formatter)); - } - - if (row.get("updateTime") == null) { - student.setUpdateTime(now); - } else { - String updateTimeStr = row.get("updateTime").toString(); - student.setUpdateTime(LocalDateTime.parse(updateTimeStr, formatter)); - } - return student; - }).toList(); - try { - baseMapper.insertOrUpdate(studentList); - } catch (Exception e) { - log.info(e.getMessage()); - } - } catch (IOException e) { - throw new RuntimeException(e); - } - } - - @Override - public void exportStudentsToExcel(HttpServletResponse response) { - try { - LambdaQueryWrapper wrapper = new LambdaQueryWrapper<>(); - wrapper.eq(Student::getCreator, BaseContext.getCurrentId()); - List studentList = baseMapper.selectList(wrapper); - - // 创建一个Excel写入器 - ExcelWriter writer = ExcelUtil.getWriter(true); - - // 设置表头别名 - writer.addHeaderAlias("no", "学号"); - writer.addHeaderAlias("name", "姓名"); - writer.addHeaderAlias("gender", "性别"); - writer.addHeaderAlias("className", "班级"); - writer.addHeaderAlias("points", "积分"); - writer.addHeaderAlias("createTime", "创建时间"); - writer.addHeaderAlias("updateTime", "最后操作时间"); - - DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"); - // 将性别的数字转换为文字 - List> rows = studentList.stream().map(student -> { - Map row = new HashMap<>(); - row.put("no", student.getNo()); - row.put("name", student.getName()); - row.put("gender", student.getGender() == 0 ? "男" : "女"); - row.put("className", student.getClassName()); - row.put("points", student.getPoints()); - row.put("createTime", student.getCreateTime().format(formatter)); - row.put("updateTime", student.getUpdateTime().format(formatter)); - return row; - }).collect(Collectors.toList()); - - // 写入数据 - writer.write(rows, true); - - // 设置响应头 - response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8"); - response.setHeader("Content-Disposition", "attachment;filename=students.xlsx"); - // 输出Excel文件 - ServletOutputStream out = response.getOutputStream(); - writer.flush(out, true); - writer.close(); - IoUtil.close(out); - - } catch (Exception e) { - log.error("导出Excel失败", e); - throw new BaseException(e.getMessage()); - } - } - - @Override - public void updatePoints(Integer id, Double points) { - Student student = baseMapper.selectById(id); - student.setPoints(student.getPoints() + points); - baseMapper.updateById(student); - } } \ No newline at end of file diff --git a/RollCallServer/src/main/resources/mapper/StudentMapper.xml b/RollCallServer/src/main/resources/mapper/StudentMapper.xml new file mode 100644 index 0000000..baaddce --- /dev/null +++ b/RollCallServer/src/main/resources/mapper/StudentMapper.xml @@ -0,0 +1,22 @@ + + + + + + + + + + + + + + + + id,name,gender, + major,class,create_time, + update_time + +