BUGFIX:1、教育通过上传文件批量创建子账号没有任何校验

2、下载子账号所有信息接口缺失（原下载模板接口保留）
3、保存个人模特到collection时类型设置为System
4、创建子账号时设置积分无效

src/main/java/com/ai/da/controller/AccountController.java

@@ -369,6 +369,12 @@ public class AccountController {
         accountService.subAccountImportExcelDownload(response);
     }
 
+    @GetMapping("/exportAccountsToExcel")
+    @ApiOperation(value = "下载子账号信息")
+    public void exportAccountsToExcel(HttpServletResponse response) {
+        accountService.exportAccountsToExcel(response);
+    }
+
     @PostMapping("/subAccountImport")
     @ApiOperation(value = "模板导入")
     public Response<Boolean> subAccountImport(@RequestParam("file") MultipartFile file) {

src/main/java/com/ai/da/model/vo/GetNextSysElementVO.java

@@ -19,4 +19,6 @@ public class GetNextSysElementVO {
     @ApiModelProperty("对应的图片的绝对路径")
     private String path;
 
+    public GetNextSysElementVO() {
+    }
 }

src/main/java/com/ai/da/service/AccountService.java

@@ -233,6 +233,8 @@ public interface AccountService extends IService<Account> {
 
     void subAccountImportExcelDownload(HttpServletResponse response);
 
+    void exportAccountsToExcel(HttpServletResponse response);
+
     Boolean subAccountImport(MultipartFile file);
 
     Set<String> organizationNameSearch(String type, String name);

src/main/java/com/ai/da/service/impl/AccountServiceImpl.java

@@ -39,6 +39,8 @@ import com.zaxxer.hikari.HikariDataSource;
 import io.netty.util.internal.StringUtil;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
+import org.apache.poi.ss.usermodel.*;
+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.core.io.ClassPathResource;
 import org.springframework.stereotype.Service;
@@ -2162,7 +2164,7 @@ public class AccountServiceImpl extends ServiceImpl<AccountMapper, Account> impl
         int subUserRole = getSubUserRole(account.getSystemUser());
 
         if (addSubAccountDTO.getId() == null) {
-            return createSubAccount(addSubAccountDTO, account, subUserRole, null, null);
+            return createSubAccount(addSubAccountDTO, account, subUserRole, addSubAccountDTO.getCreditsUsageLimit(), null);
         } else {
             return updateSubAccount(addSubAccountDTO, account, subUserRole);
         }
@@ -3056,6 +3058,88 @@ public class AccountServiceImpl extends ServiceImpl<AccountMapper, Account> impl
         }
     }
 
+    @Override
+    public void exportAccountsToExcel(HttpServletResponse response) {
+        Workbook workbook = null;
+        try {
+            // 1. 查询数据
+            Account adminAcc = baseMapper.selectById(UserContext.getUserHolder().getId());
+            List<Account> accounts = accountMapper.selectList(new QueryWrapper<Account>()
+                    .eq("organization_name", adminAcc.getOrganizationName())
+                    .eq("system_user", 8)
+                    .select("user_name", "user_email", "user_password", "credits_usage_limit"));
+
+            // 2. 创建Excel工作簿
+            workbook = new XSSFWorkbook();
+            Sheet sheet = workbook.createSheet("subAccounts");
+
+            // 3. 创建标题行
+            Row headerRow = sheet.createRow(0);
+            String[] headers = {"name", "email", "password", "creditsUsageLimit"};
+
+            // 设置标题样式
+            CellStyle headerStyle = workbook.createCellStyle();
+            Font headerFont = workbook.createFont();
+            headerFont.setBold(true);
+            headerStyle.setFont(headerFont);
+
+            // 写入标题
+            for (int i = 0; i < headers.length; i++) {
+                Cell cell = headerRow.createCell(i);
+                cell.setCellValue(headers[i]);
+                cell.setCellStyle(headerStyle);
+            }
+
+            // 4. 写入数据
+            int rowNum = 1;
+            for (Account account : accounts) {
+                Row row = sheet.createRow(rowNum++);
+                row.createCell(0).setCellValue(account.getUserName() != null ? account.getUserName() : "");
+                row.createCell(1).setCellValue(account.getUserEmail() != null ? account.getUserEmail() : "");
+                row.createCell(2).setCellValue(account.getUserPassword() != null ? account.getUserPassword() : "");
+
+                // 更安全的数据类型处理
+                if (account.getCreditsUsageLimit() != null) {
+                    row.createCell(3).setCellValue(String.valueOf(account.getCreditsUsageLimit()));
+                } else {
+                    row.createCell(3).setCellValue(""); // 空字符串
+                }
+            }
+
+            // 5. 自动调整列宽
+            for (int i = 0; i < headers.length; i++) {
+                sheet.autoSizeColumn(i);
+            }
+
+            // 6. 重置响应（重要！）
+            response.reset();
+            response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
+            response.setCharacterEncoding("UTF-8");
+
+            // 设置文件名（处理特殊字符）
+            String fileName = "subAccount_export.xlsx";
+            String encodedFileName = URLEncoder.encode(fileName, "UTF-8").replace("+", "%20");
+            response.setHeader("Content-Disposition", "attachment; filename*=UTF-8''" + encodedFileName);
+
+            // 7. 写入响应流
+            OutputStream outputStream = response.getOutputStream();
+            workbook.write(outputStream);
+            outputStream.flush();
+        } catch (IOException e) {
+            log.error(e.getMessage()); // 记录异常信息
+            throw new BusinessException("导出文件失败");
+        } finally {
+            // 确保资源关闭
+            if (workbook != null) {
+                try {
+                    workbook.close();
+                } catch (IOException e) {
+                    log.error(e.getMessage()); // 记录异常信息
+                }
+            }
+        }
+    }
+
     @Override
     public Boolean subAccountImport(MultipartFile file) {
         AuthPrincipalVo vo = UserContext.getUserHolder();
@@ -3069,29 +3153,24 @@ public class AccountServiceImpl extends ServiceImpl<AccountMapper, Account> impl
 
             // 示例：打印或保存
             for (SubAccountImportDTO dto : importList) {
+                // 只有当前子账号数量为0时允许批量上传
+                QueryWrapper<Account> qw = new QueryWrapper<>();
+                qw.lambda().eq(Account::getSystemUser, 8)
+                        .eq(Account::getOrganizationName, parent.getOrganizationName());
+                List<Account> accounts = accountMapper.selectList(qw);
+                if (!accounts.isEmpty()){
+                    throw new BusinessException("permit.bulk.creation", ResultEnum.PROMPT.getCode());
+                }
+                if (importList.size() > parent.getSubAccountNum() - 1){
+                    throw new BusinessException("Action required: You cannot create [" +importList.size() + "] sub-accounts (Current quota: [" + (parent.getSubAccountNum() - 1) + "]).");
+                }
 
-                Account account = new Account();
+                AddSubAccountDTO addSubAccountDTO = new AddSubAccountDTO();
-                account.setUserName(dto.getName());
+                addSubAccountDTO.setUserEmail(dto.getEmail());
-                account.setUserEmail(dto.getEmail());
+                addSubAccountDTO.setUserName(dto.getEmail().substring(0, dto.getEmail().indexOf("@")));
-                account.setUserPassword(md5(dto.getPassword() + "abc"));
+                addSubAccountDTO.setUserPassword(md5(parent.getOrganizationName().toLowerCase() + "abc"));
-                account.setCreditsUsageLimit(BigDecimal.valueOf(dto.getCredisUsageLimit()));
+                // 添加用户
-                account.setParentId(vo.getId());
+                addSubAccount(addSubAccountDTO);
-                account.setValidStartTime(parent.getValidStartTime());
-                account.setValidEndTime(parent.getValidEndTime());
-                account.setCreateDate(new Date());
-                account.setIsTrial(0);
-                account.setIsBeginner(1);
-                account.setCredits(BigDecimal.valueOf(0));
-                account.setLanguage(Language.ENGLISH.name());
-                if (parent.getSystemUser() == 5) {
-                    account.setSystemUser(6);
-                }
-                if (parent.getSystemUser() == 7) {
-                    account.setSystemUser(8);
-                }
-                account.setOrganizationName(parent.getOrganizationName());
-                account.setParentId(parent.getId());
-                accountMapper.insert(account);
             }
 
             return true;
@@ -3104,7 +3183,7 @@ public class AccountServiceImpl extends ServiceImpl<AccountMapper, Account> impl
     public static String md5(String input) {
         try {
             MessageDigest md = MessageDigest.getInstance("MD5");
-            byte[] messageDigest = md.digest(input.getBytes());
+            byte[] messageDigest = md.digest(input.getBytes(StandardCharsets.UTF_8));
 
             // 转为16进制字符串
             StringBuilder sb = new StringBuilder();
@@ -3113,7 +3192,7 @@ public class AccountServiceImpl extends ServiceImpl<AccountMapper, Account> impl
                 if (hex.length() == 1) sb.append('0'); // 补0
                 sb.append(hex);
             }
-            return sb.append("abc").toString();
+            return sb.toString();
 
         } catch (NoSuchAlgorithmException e) {
             throw new RuntimeException("MD5算法不可用", e);

src/main/java/com/ai/da/service/impl/CollectionElementServiceImpl.java

@@ -625,6 +625,10 @@ public class CollectionElementServiceImpl extends ServiceImpl<CollectionElementM
             for (MannequinDTO mannequin : designDTO.getMannequins()) {
                 if (mannequin.getType().equals("System")) {
                     SysFileVO byId = sysFileService.getById(mannequin.getId());
+                    if (Objects.isNull(byId)){
+                        log.info("未知模特：{}：{}", mannequin.getId(), "System");
+                        throw new BusinessException("model.not.found");
+                    }
 //                    if (!StringUtils.isEmpty(byId.getLevel3Type()) && byId.getLevel2Type().equals("Female")) {
 //                        elementVO.setStyle(byId.getLevel3Type());
 //                    }
@@ -645,7 +649,7 @@ public class CollectionElementServiceImpl extends ServiceImpl<CollectionElementM
                     elementVO.setDesignLibraryModelPoint(calculateTemplatePointTemplate(modelPoint, byId.getHigh(), byId.getWidth(), byId.getUrl()));
                 } else if (designDTO.getModelType().equals(ModelType.SYSTEM.getValue())) {
                     SysFileVO byId = sysFileService.getById(designDTO.getTemplateId());
-                    if (!StringUtils.isEmpty(byId.getLevel3Type()) && byId.getLevel2Type().equals("Female")) {
+                    if (Objects.nonNull(byId) && !StringUtils.isEmpty(byId.getLevel3Type()) && byId.getLevel2Type().equals("Female")) {
                         elementVO.setStyle(byId.getLevel3Type());
                     }
                     LibraryModelPoint modelPoint = libraryModelPointService.getByRelationId(byId.getId(), designDTO.getModelType());

src/main/java/com/ai/da/service/impl/DesignItemServiceImpl.java

@@ -178,7 +178,11 @@ public class DesignItemServiceImpl extends ServiceImpl<DesignItemMapper, DesignI
             }
         }
         SysFileVO sysFileVO = sysFileService.getById(idValue);
-        return new GetNextSysElementVO(sysFileVO.getId(), level2Type, sysFileVO.getUrl());
+        if (Objects.nonNull(sysFileVO)){
+            return new GetNextSysElementVO(sysFileVO.getId(), level2Type, sysFileVO.getUrl());
+        }else {
+            return new GetNextSysElementVO();
+        }
     }
 
     @Override

src/main/java/com/ai/da/service/impl/GenerateServiceImpl.java

@@ -1846,11 +1846,17 @@ public class GenerateServiceImpl extends ServiceImpl<GenerateMapper, Generate> i
         // 所有修改的图片都另存为,不覆盖原图
         if (proportionDTO.getType().equals("Library")) {
             model = libraryService.getById(proportionDTO.getId());
+            if (Objects.isNull(model)){
+                throw new BusinessException("model.not.found");
+            }
             String url = model.getUrl();
             name = url.substring(url.indexOf("/") + 1, url.lastIndexOf("/")) + "/" + uuid;
 //            gender = model.getLevel2Type();
         } else {
             SysFileVO sysModel = sysFileService.getById(proportionDTO.getId());
+            if (Objects.isNull(sysModel)){
+                throw new BusinessException("model.not.found");
+            }
             gender = sysModel.getLevel2Type();
             name = accountId + "/models/" + gender.toLowerCase() + "/" + uuid;
         }

src/main/java/com/ai/da/service/impl/SysFileServiceImpl.java

@@ -214,9 +214,12 @@ public class SysFileServiceImpl extends ServiceImpl<SysFileMapper, SysFile> impl
         SysFileVO sysFile = LocalCacheUtils.getSysFileCache(id);
         if (Objects.isNull(sysFile) || Objects.isNull(sysFile.getId())) {
             sysFile = CopyUtil.copyObject(sysFileMapper.selectById(id), SysFileVO.class);
-            LocalCacheUtils.setSysFileCache(id, sysFile);
+            if (Objects.nonNull(sysFile)){
+                LocalCacheUtils.setSysFileCache(id, sysFile);
+                return sysFile;
+            }
         }
-        return sysFile;
+        return null;
     }
 
     @Override

src/main/java/com/ai/da/service/impl/UserLikeGroupServiceImpl.java

@@ -2642,7 +2642,7 @@ public class UserLikeGroupServiceImpl extends ServiceImpl<UserLikeGroupMapper, U
                     CollectionElementRelModel collectionElementRelModel = new CollectionElementRelModel();
                     collectionElementRelModel.setCollectionElementId(collectionElement.getId());
                     collectionElementRelModel.setRelationId(dto.getId());
-                    collectionElementRelModel.setRelationType("System");
+                    collectionElementRelModel.setRelationType("Library");
                     collectionElementRelModelMapper.insert(collectionElementRelModel);
 
                 }

src/main/resources/messages_en.properties

@@ -158,6 +158,7 @@ this.promotion.code.is.invalid=This promotion code is invalid.
 one.time.limit.per.customer=This code has already been redeemed. Promo codes are limited to one-time use per customer.
 element.already.exists=This element already exists in the public library
 have.no.permission=Sorry, you don't have permission
+permit.bulk.creation=The system permits bulk account creation exclusively when no sub-accounts exist.
 
 # 可能会报异常
 # Informative:

src/main/resources/messages_zh.properties

@@ -154,6 +154,7 @@ this.promotion.code.is.invalid=该促销码无效。
 one.time.limit.per.customer=该码已兑换。每个促销码每位用户仅限使用一次。
 element.already.exists=元素已存在于公共库中
 have.no.permission=您没有权限
+permit.bulk.creation=系统仅当不存在任何子账号时，才允许批量创建账号。
 
 # 可能会报异常
 # Informative: