新增/修改访客信息时，新增往学生信息表中更新车牌号逻辑

src/main/java/com/template/services/WelcomeStudentService.java

@@ -67,4 +67,11 @@ public interface WelcomeStudentService extends IService<WelcomeStudent> {
      * @param carNumber 车牌号
      */
     void updateCarNumber(String studentCard, String carNumber);
+
+    /**
+     * 根据学生学号/录取号统计数量
+     * @param studentCard 学号/录取号
+     * @return 数量
+     */
+    int countByStudentCard(String studentCard);
 }

src/main/java/com/template/services/impl/WelcomeStudentServiceImpl.java

@@ -1,21 +1,21 @@
 package com.template.services.impl;
 
-import com.baomidou.mybatisplus.core.conditions.Wrapper;
+import cn.hutool.core.util.ObjectUtil;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
-import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
 import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.template.mapper.WelcomeStudentMapper;
-import com.template.model.pojo.WelcomeAccount;
-import com.template.model.pojo.WelcomeStudent;
 import com.template.model.pojo.WelcomeStudent;
-import com.template.mapper.WelcomeStudentMapper;
-import com.template.model.pojo.WelcomeVisitor;
 import com.template.model.result.PageUtils;
-import com.template.model.vo.*;
+import com.template.model.vo.CheckInVo;
+import com.template.model.vo.StudentPageVo;
+import com.template.model.vo.StudentRegisterVo;
+import com.template.model.vo.StudentSexRatioVo;
+import com.template.model.vo.StudentTotalVo;
+import com.template.model.vo.StudentTrafficVo;
 import com.template.services.WelcomeStudentService;
-import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.util.StringUtils;
@@ -203,13 +203,23 @@ public class WelcomeStudentServiceImpl extends ServiceImpl<WelcomeStudentMapper,
 
     @Override
     public void updateCarNumber(String studentCard, String carNumber) {
-        // 创建 UpdateWrapper 对象，用于构建更新条件
-        UpdateWrapper<WelcomeStudent> updateWrapper = new UpdateWrapper<>();
-        // 设置更新条件，根据学生卡号筛选记录
-        updateWrapper.eq("admiss_num", studentCard);
-        // 设置要更新的字段，将车牌号更新为传入的值
-        updateWrapper.set("car_number", carNumber);
-        // 执行更新操作
-        welcomeStudentMapper.update(null, updateWrapper);
+        LambdaQueryWrapper<WelcomeStudent> queryWrapper = new LambdaQueryWrapper<>();
+        queryWrapper.eq(WelcomeStudent::getAdmissNum, studentCard);
+
+        WelcomeStudent student = getOne(queryWrapper);
+        if (ObjectUtil.isNotNull(student)) {
+            WelcomeStudent updateStudent = new WelcomeStudent();
+            updateStudent.setId(student.getId());
+            updateStudent.setCarNumber(carNumber);
+
+            updateById(updateStudent);
+        }
+    }
+
+    @Override
+    public int countByStudentCard(String studentCard) {
+        LambdaQueryWrapper<WelcomeStudent> queryWrapper = new LambdaQueryWrapper<>();
+        queryWrapper.eq(WelcomeStudent::getAdmissNum, studentCard);
+        return count(queryWrapper);
     }
 }

src/main/java/com/template/services/impl/WelcomeVisitorServiceImpl.java

@@ -147,7 +147,7 @@ public class WelcomeVisitorServiceImpl extends ServiceImpl<WelcomeVisitorMapper,
 
         // 校验学号/录取号是否存在
         String studentCard = visitorRequest.getStudentCard();
-        int existCount = studentService.existStudentInfo(studentCard, null);
+        int existCount = studentService.countByStudentCard(studentCard);
         if (existCount <= 0) {
             throw new MyCustomException(ResponseStatusEnum.STUDENT_CAR_NUMBER_NOT_FOUNT);
         }