feat: 完成对学生表的基本CRUD

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<Student>> list() {
+        List<Student> studentList = studentService.list();
+        return Result.success(studentList);
+    }
+
+    @Operation(summary = "根据 id 查询学生信息")
+    @GetMapping("/{id}")
+    public Result<Student> 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<PageResult<Student>> pageStuInfo(PageQueryDTO pageQueryDTO) {
+        log.info("学生信息分页查询: {}", pageQueryDTO);
+        PageResult<Student> 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<Integer> ids) {
+        studentService.removeByIds(ids);
+        return Result.success();
+    }
+
+
+
+}

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<Student> {
+
+}
+
+
+
+

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<Student> {
+
+    void updateStu(StudentDTO studentDTO);
+
+    PageResult<Student> page(PageQueryDTO pageQueryDTO);
+
+    void save(StudentDTO studentDTO);
+
+}

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<StudentMapper, Student>
         baseMapper.insert(student);
     }
 
-    @Override
-    public Student rollCall() {
-        List<Student> 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<Map<String, Object>> rows = reader.readAll();
-            LocalDateTime now = LocalDateTime.now();
-            DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
-            List<Student> 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<Student> wrapper = new LambdaQueryWrapper<>();
-            wrapper.eq(Student::getCreator, BaseContext.getCurrentId());
-            List<Student> 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<Map<String, Object>> rows = studentList.stream().map(student -> {
-                Map<String, Object> 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);
-    }
 }

RollCallServer/src/main/resources/mapper/StudentMapper.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper
+        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="cc.aspark.mapper.StudentMapper">
+
+    <resultMap id="BaseResultMap" type="cc.aspark.domain.entity.Student">
+            <id property="id" column="id" jdbcType="INTEGER"/>
+            <result property="name" column="name" jdbcType="VARCHAR"/>
+            <result property="gender" column="gender" jdbcType="TINYINT"/>
+            <result property="major" column="major" jdbcType="VARCHAR"/>
+            <result property="class" column="class" jdbcType="INTEGER"/>
+            <result property="createTime" column="create_time" jdbcType="TIMESTAMP"/>
+            <result property="updateTime" column="update_time" jdbcType="TIMESTAMP"/>
+    </resultMap>
+
+    <sql id="Base_Column_List">
+        id,name,gender,
+        major,class,create_time,
+        update_time
+    </sql>
+</mapper>