springboot 在线简易文档管理器demo

好的，我可以为您提供一个简单的Spring Boot在线文档管理器Demo。 首先，您需要在pom.xml文件中添加以下依赖项： ```xml <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-validation</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-security</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-elasticsearch</artifactId> </dependency> <dependency> <groupId>org.elasticsearch.client</groupId> <artifactId>transport</artifactId> <version>6.4.3</version> </dependency> <dependency> <groupId>com.github.javafaker</groupId> <artifactId>javafaker</artifactId> <version>1.0.2</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.8.1</version> </dependency> ``` 然后，您需要创建一个名为Document的实体类，该类具有以下属性： ```java @Entity @Table(name = "documents") public class Document { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; @NotBlank(message = "Please enter a title") private String title; private String description; @Lob private String content; private String type; @Transient private MultipartFile file; private String fileName; private String fileType; private long fileSize; private String fileUrl; @Temporal(TemporalType.TIMESTAMP) private Date createdAt; @Temporal(TemporalType.TIMESTAMP) private Date updatedAt; @ManyToOne(fetch = FetchType.LAZY) private User createdBy; @ManyToOne(fetch = FetchType.LAZY) private User updatedBy; } ``` 然后，您需要创建一个名为DocumentRepository的JpaRepository接口，用于在数据库中保存和检索文档： ```java @Repository public interface DocumentRepository extends JpaRepository<Document, Long> { List<Document> findByTitleContainingIgnoreCaseOrDescriptionContainingIgnoreCase(String title, String description); List<Document> findByTypeIgnoreCase(String type); List<Document> findByCreatedBy(User createdBy); List<Document> findByUpdatedBy(User updatedBy); Page<Document> findByCreatedBy(User createdBy, Pageable pageable); Page<Document> findByUpdatedBy(User updatedBy, Pageable pageable); Page<Document> findAll(Pageable pageable); } ``` 接下来，您需要创建一个名为DocumentService的服务类，用于实现业务逻辑： ```java @Service public class DocumentService { private final DocumentRepository documentRepository; @Autowired public DocumentService(DocumentRepository documentRepository) { this.documentRepository = documentRepository; } public Document save(Document document) { document.setCreatedAt(new Date()); document.setUpdatedAt(new Date()); return documentRepository.save(document); } public List<Document> findAll() { return documentRepository.findAll(); } public Optional<Document> findById(Long id) { return documentRepository.findById(id); } public void deleteById(Long id) { documentRepository.deleteById(id); } public List<Document> search(String query) { return documentRepository.findByTitleContainingIgnoreCaseOrDescriptionContainingIgnoreCase(query, query); } public List<Document> findByType(String type) { return documentRepository.findByTypeIgnoreCase(type); } public List<Document> findByCreatedBy(User createdBy) { return documentRepository.findByCreatedBy(createdBy); } public List<Document> findByUpdatedBy(User updatedBy) { return documentRepository.findByUpdatedBy(updatedBy); } public Page<Document> findByCreatedBy(User createdBy, Pageable pageable) { return documentRepository.findByCreatedBy(createdBy, pageable); } public Page<Document> findByUpdatedBy(User updatedBy, Pageable pageable) { return documentRepository.findByUpdatedBy(updatedBy, pageable); } public Page<Document> findAll(Pageable pageable) { return documentRepository.findAll(pageable); } } ``` 然后，您需要创建一个名为DocumentController的控制器类，用于处理与文档相关的HTTP请求： ```java @Controller public class DocumentController { private final DocumentService documentService; @Autowired public DocumentController(DocumentService documentService) { this.documentService = documentService; } @GetMapping("/") public String home(Model model) { List<Document> documents = documentService.findAll(); model.addAttribute("documents", documents); return "home"; } @GetMapping("/document/new") public String newDocument(Model model) { model.addAttribute("document", new Document()); return "new_document"; } @PostMapping("/document/save") public String saveDocument(@Valid Document document, BindingResult bindingResult, Model model) throws IOException { if (bindingResult.hasErrors()) { return "new_document"; } MultipartFile file = document.getFile(); if (!file.isEmpty()) { String fileName = StringUtils.cleanPath(Objects.requireNonNull(file.getOriginalFilename())); document.setFileName(fileName); document.setFileType(file.getContentType()); document.setFileSize(file.getSize()); String fileUrl = "http://localhost:8080/document/download/" + document.getId(); document.setFileUrl(fileUrl); String uploadDir = "document_files/"; Path uploadPath = Paths.get(uploadDir); if (!Files.exists(uploadPath)) { Files.createDirectories(uploadPath); } try (InputStream inputStream = file.getInputStream()) { Path filePath = uploadPath.resolve(fileName); Files.copy(inputStream, filePath, StandardCopyOption.REPLACE_EXISTING); } catch (IOException e) { throw new IOException("Could not save file: " + fileName, e); } } documentService.save(document); return "redirect:/"; } @GetMapping("/document/edit/{id}") public String editDocument(@PathVariable Long id, Model model) { Optional<Document> optionalDocument = documentService.findById(id); if (optionalDocument.isPresent()) { model.addAttribute("document", optionalDocument.get()); return "edit_document"; } else { return "redirect:/"; } } @PostMapping("/document/update") public String updateDocument(@Valid Document document, BindingResult bindingResult, Model model) throws IOException { if (bindingResult.hasErrors()) { return "edit_document"; } MultipartFile file = document.getFile(); if (!file.isEmpty()) { String fileName = StringUtils.cleanPath(Objects.requireNonNull(file.getOriginalFilename())); document.setFileName(fileName); document.setFileType(file.getContentType()); document.setFileSize(file.getSize()); String fileUrl = "http://localhost:8080/document/download/" + document.getId(); document.setFileUrl(fileUrl); String uploadDir = "document_files/"; Path uploadPath = Paths.get(uploadDir); if (!Files.exists(uploadPath)) { Files.createDirectories(uploadPath); } try (InputStream inputStream = file.getInputStream()) { Path filePath = uploadPath.resolve(fileName); Files.copy(inputStream, filePath, StandardCopyOption.REPLACE_EXISTING); } catch (IOException e) { throw new IOException("Could not save file: " + fileName, e); } } document.setUpdatedAt(new Date()); documentService.save(document); return "redirect:/"; } @GetMapping("/document/delete/{id}") public String deleteDocument(@PathVariable Long id) throws IOException { Optional<Document> optionalDocument = documentService.findById(id); if (optionalDocument.isPresent()) { Document document = optionalDocument.get(); String fileName = document.getFileName(); String uploadDir = "document_files/"; Path uploadPath = Paths.get(uploadDir); Path filePath = uploadPath.resolve(fileName); Files.deleteIfExists(filePath); documentService.deleteById(id); } return "redirect:/"; } @GetMapping("/document/search") public String searchDocuments(@RequestParam String query, Model model) { List<Document> documents = documentService.search(query); model.addAttribute("documents", documents); return "home"; } @GetMapping("/document/type/{type}") public String getDocumentsByType(@PathVariable String type, Model model) { List<Document> documents = documentService.findByType(type); model.addAttribute("documents", documents); return "home"; } @GetMapping("/document/created-by/{id}") public String getDocumentsCreatedBy(@PathVariable Long id, Model model, @RequestParam(defaultValue = "0") int page) { User createdBy = new User(); createdBy.setId(id); Page<Document> documents = documentService.findByCreatedBy(createdBy, PageRequest.of(page, 10, Sort.by("createdAt").descending())); model.addAttribute("documents", documents.getContent()); model.addAttribute("currentPage", page); model.addAttribute("totalPages", documents.getTotalPages()); return "home"; } @GetMapping("/document/updated-by/{id}") public String getDocumentsUpdatedBy(@PathVariable Long id, Model model, @RequestParam(defaultValue = "0") int page) { User updatedBy = new User(); updatedBy.setId(id); Page<Document> documents = documentService.findByUpdatedBy(updatedBy, PageRequest.of(page, 10, Sort.by("updatedAt").descending())); model.addAttribute("documents", documents.getContent()); model.addAttribute("currentPage", page); model.addAttribute("totalPages", documents.getTotalPages()); return "home"; } @GetMapping("/document/download/{id}") public ResponseEntity<Resource> downloadFile(@PathVariable Long id) throws IOException { Optional<Document> optionalDocument = documentService.findById(id); if (optionalDocument.isPresent()) { Document document = optionalDocument.get(); String fileName = document.getFileName(); String fileUrl = document.getFileUrl(); String uploadDir = "document_files/"; Path uploadPath = Paths.get(uploadDir); Path filePath = uploadPath.resolve(fileName); Resource resource = new UrlResource(filePath.toUri()); return ResponseEntity.ok() .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + resource.getFilename() + "\"") .body(resource); } else { throw new FileNotFoundException("File not found with id: " + id); } } } ``` 最后，您需要创建名为home.html、new_document.html和edit_document.html的Thymeleaf模板文件，以呈现文档列表、新建文档表单和编辑文档表单。 这就是一个简单的Spring Boot在线文档管理器Demo，您可以在此基础上进行扩展和优化。