feat: 完善学生导入模板下载功能

1. 后端新增接口 /business/student/template
   - 使用 ExcelUtil 导出模板
   - 包含示例数据方便用户参考

2. 前端修复模板下载：
   - 使用 fetch 下载文件
   - 文字"用户手机号"改为"会员手机号"

3. 新增 StudentImportDto 导入数据对象
   - 字段：姓名、学号、会员手机号、区域、学校、年级、班级、性别、出生年月

backend/ruoyi-modules/pangu-business/src/main/java/org/dromara/pangu/student/controller/PgStudentController.java

@@ -1,8 +1,10 @@
 package org.dromara.pangu.student.controller;
 
 import cn.dev33.satoken.annotation.SaCheckPermission;
+import jakarta.servlet.http.HttpServletResponse;
 import lombok.RequiredArgsConstructor;
 import org.dromara.common.core.domain.R;
+import org.dromara.common.excel.utils.ExcelUtil;
 import org.dromara.common.log.annotation.Log;
 import org.dromara.common.log.enums.BusinessType;
 import org.dromara.common.mybatis.core.page.PageQuery;
@@ -12,11 +14,13 @@ import org.dromara.pangu.school.domain.PgSchool;
 import org.dromara.pangu.school.domain.vo.SchoolTreeNode;
 import org.dromara.pangu.school.service.IPgSchoolService;
 import org.dromara.pangu.student.domain.PgStudent;
+import org.dromara.pangu.student.domain.dto.StudentImportDto;
 import org.dromara.pangu.student.domain.vo.StudentVo;
 import org.dromara.pangu.student.service.IPgStudentService;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.ArrayList;
 import java.util.List;
 
 /**
@@ -98,4 +102,26 @@ public class PgStudentController extends BaseController {
     public R<java.util.List<PgStudent>> listByMemberId(@PathVariable Long memberId) {
         return R.ok(studentService.selectByMemberId(memberId));
     }
+
+    /**
+     * 下载学生导入模板
+     */
+    @GetMapping("/template")
+    public void downloadTemplate(HttpServletResponse response) {
+        // 创建示例数据，方便用户参考填写
+        List<StudentImportDto> sampleData = new ArrayList<>();
+        StudentImportDto sample = new StudentImportDto();
+        sample.setStudentName("张三");
+        sample.setStudentNo("2026001");
+        sample.setMemberPhone("13800138000");
+        sample.setRegionPath("湖北省-武汉市-硚口区");
+        sample.setSchoolName("武汉市第二中学");
+        sample.setGradeName("高一");
+        sample.setClassName("1班");
+        sample.setGender("男");
+        sample.setBirthday("2010-01");
+        sampleData.add(sample);
+        
+        ExcelUtil.exportExcel(sampleData, "学生导入模板", StudentImportDto.class, response);
+    }
 }

backend/ruoyi-modules/pangu-business/src/main/java/org/dromara/pangu/student/domain/dto/StudentImportDto.java

@@ -0,0 +1,52 @@
+package org.dromara.pangu.student.domain.dto;
+
+import cn.idev.excel.annotation.ExcelProperty;
+import cn.idev.excel.annotation.write.style.ColumnWidth;
+import cn.idev.excel.annotation.write.style.HeadRowHeight;
+import lombok.Data;
+
+/**
+ * 学生导入数据传输对象
+ *
+ * @author pangu
+ */
+@Data
+@HeadRowHeight(25)
+public class StudentImportDto {
+
+    @ExcelProperty(value = "姓名", index = 0)
+    @ColumnWidth(15)
+    private String studentName;
+
+    @ExcelProperty(value = "学号", index = 1)
+    @ColumnWidth(20)
+    private String studentNo;
+
+    @ExcelProperty(value = "会员手机号", index = 2)
+    @ColumnWidth(15)
+    private String memberPhone;
+
+    @ExcelProperty(value = "区域", index = 3)
+    @ColumnWidth(25)
+    private String regionPath;
+
+    @ExcelProperty(value = "学校", index = 4)
+    @ColumnWidth(25)
+    private String schoolName;
+
+    @ExcelProperty(value = "年级", index = 5)
+    @ColumnWidth(12)
+    private String gradeName;
+
+    @ExcelProperty(value = "班级", index = 6)
+    @ColumnWidth(10)
+    private String className;
+
+    @ExcelProperty(value = "性别", index = 7)
+    @ColumnWidth(8)
+    private String gender;
+
+    @ExcelProperty(value = "出生年月", index = 8)
+    @ColumnWidth(12)
+    private String birthday;
+}

frontend/ruoyi-ui/src/views/business/student/components/ImportDialog.vue

@@ -16,8 +16,8 @@
         <div style="line-height: 1.8">
           1. 请先下载导入模板，按模板格式填写数据<br>
           2. 支持 xlsx、xls 格式文件，单次最多导入500条<br>
-          3. 必填字段：姓名、学号、用户手机号、区域、学校、年级、班级<br>
-          4. 若用户手机号已存在则挂载到已有用户，否则自动创建家长账号
+          3. 必填字段：姓名、学号、会员手机号、区域、学校、年级、班级<br>
+          4. 若会员手机号已存在则挂载到已有会员，否则自动创建家长账号
         </div>
       </template>
     </el-alert>
@@ -112,13 +112,33 @@ const uploadHeaders = computed(() => {
 const handleDownloadTemplate = async () => {
   downloadLoading.value = true
   try {
-    // 使用 window.open 直接下载
     const baseApi = import.meta.env.VITE_APP_BASE_API || ''
-    const token = getToken()
-    const url = `${baseApi}/business/student/template?token=${encodeURIComponent(token)}`
-    window.open(url, '_blank')
+    // 使用 fetch 下载文件
+    const response = await fetch(`${baseApi}/business/student/template`, {
+      method: 'GET',
+      headers: {
+        'Authorization': 'Bearer ' + getToken()
+      }
+    })
+    
+    if (!response.ok) {
+      throw new Error('下载失败')
+    }
+    
+    const blob = await response.blob()
+    const url = window.URL.createObjectURL(blob)
+    const link = document.createElement('a')
+    link.href = url
+    link.download = '学生导入模板.xlsx'
+    document.body.appendChild(link)
+    link.click()
+    document.body.removeChild(link)
+    window.URL.revokeObjectURL(url)
+    
+    ElMessage.success('模板下载成功')
   } catch (e) {
-    ElMessage.error('下载模板失败')
+    console.error('下载模板失败:', e)
+    ElMessage.error('下载模板失败，请重试')
   } finally {
     downloadLoading.value = false
   }