System Overview

This enterprise-grade Office Automation (OA) solution integrates advanced management concepts with digital workflows. By automating administrative processes, it enables paperless operations, reduces manual errors, and enhances organizational efficiency through systematic management of office activities.

Technical Architecture

The system employs a Spring Boot backend with JPA for data persistence. Key components include:

• Spring MVC for request handling
• JPA repositories for database operations
• Email integration using JavaMail
• Validation utilities for form processign

Core Functionality

• Authentication and access control
• Workflow management
• Attendance tracking
• Internal communication tools
• Notification systems
• Document handling

Implementation Examples

Form Validation Utility

public class FormValidator {
  public static ResponseDTO validateForm(BindingResult result) {
    if (result.hasErrors()) {
      Map<String, List<String>> errorMap = new HashMap<>();
      for (FieldError error : result.getFieldErrors()) {
        errorMap.computeIfAbsent(error.getField(), k -> new ArrayList<>())
                .add(error.getDefaultMessage());
      }
      return ResponseDTO.error(ERROR_CODE, "Validation failed", errorMap);
    }
    return ResponseDTO.success();
  }
  
  public static ResponseDTO success(Object data) {
    ResponseDTO response = new ResponseDTO();
    response.setData(data);
    response.setMessage("Operation successful");
    response.setStatusCode(SUCCESS_CODE);
    return response;
  }
}

Notification Repository

@Mapper
public interface AlertRepository {
  List<Map<String, Object>> getUserAlerts(@Param("userId") Long userId);
  
  List<Map<String, Object>> getRecentAlerts(@Param("userId") Long userId);
  
  List<Map<String, Object>> sortAlerts(@Param("userId") Long userId, 
                                      @Param("filter") String filter,
                                      @Param("category") Integer category,
                                      @Param("state") Integer state,
                                      @Param("sortOrder") Integer sortOrder);
}

Email Service Implementation

@Service
public class EmailHandler {
  private String attachmentBasePath;
  
  @PostConstruct
  public void initPath() {
    try {
      attachmentBasePath = ResourceUtils.getURL("classpath:").getPath()
                   .replace("/target/classes/", "/static/attachments");
    } catch (IOException e) {
      System.out.println("Path initialization error");
    }
  }
  
  public Page<EmailRecord> retrieveEmails(int page, int size, User user, 
                                         String filter, String mailbox) {
    Pageable pageConfig = PageRequest.of(page, size);
    // Implementation logic for different mailbox types
  }
  
  public void sendExternalEmail(String account, String password, String recipient,
                               String senderName, String subject, String content, 
                               String attachmentPath, String fileName) {
    Properties mailProps = new Properties();
    mailProps.put("mail.transport.protocol", "smtp");
    mailProps.put("mail.smtp.host", "smtp.qq.com");
    mailProps.put("mail.smtp.auth", "true");
    // Additional email configuration and sending logic
  }
}

Email Repository

public interface EmailRepository extends PagingAndSortingRepository<Email, Long> {
  List<Email> findDraftsByUser(User user);
  
  Page<Email> findSentEmailsByUser(User user, Pageable pageable);
  
  @Query("SELECT e FROM Email e WHERE e.owner = ?1 AND e.sent = ?2 AND e.deleted = ?3 "
         + "AND (e.subject LIKE %?4% OR e.recipient LIKE %?4%)")
  Page<Email> searchUserEmails(User user, Boolean sentStatus, Boolean deletedStatus, 
                              String searchTerm, Pageable pageable);
}