基于Java+SpringBoot的保险信息网站毕业设计(源码+说明+演示视频).zip

package com.example.demo.storage; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.core.io.Resource; import org.springframework.core.io.UrlResource; import org.springframework.stereotype.Service; import org.springframework.util.FileSystemUtils; import org.springframework.web.multipart.MultipartFile; import java.io.IOException; import java.io.InputStream; import java.net.MalformedURLException; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; import java.nio.file.StandardCopyOption; import java.util.stream.Stream; @Service public class FileSystemStorageService implements StorageService { private final Path rootLocation; @Autowired public FileSystemStorageService(StorageProperties properties) { this.rootLocation = Paths.get(properties.getLocation()); } @Override public void store(MultipartFile file) { try { if (file.isEmpty()) { throw new StorageException("Failed to store empty file."); } Path destinationFile = this.rootLocation.resolve( Paths.get(file.getOriginalFilename())) .normalize().toAbsolutePath(); if (!destinationFile.getParent().equals(this.rootLocation.toAbsolutePath())) { // This is a security check throw new StorageException("Cannot store file outside current directory."); } try (InputStream inputStream = file.getInputStream()) { Files.copy(inputStream, destinationFile, StandardCopyOption.REPLACE_EXISTING); } } catch (IOException e) { throw new StorageException("Failed to store file.", e); } } @Override public Stream<Path> loadAll() { try { return Files.walk(this.rootLocation, 1) .filter(path -> !path.equals(this.rootLocation)) .map(this.rootLocation::relativize); } catch (IOException e) { throw new StorageException("Failed to read stored files", e); } } @Override public Path load(String filename) { return rootLocation.resolve(filename); } @Override public Resource loadAsResource(String filename) { try { Path file = load(filename); Resource resource = new UrlResource(file.toUri()); if (resource.exists() || resource.isReadable()) { return resource; } else { throw new StorageFileNotFoundException( "Could not read file: " + filename); } } catch (MalformedURLException e) { throw new StorageFileNotFoundException("Could not read file: " + filename, e); } } @Override public void deleteAll() { FileSystemUtils.deleteRecursively(rootLocation.toFile()); } @Override public void init() { try { Files.createDirectories(rootLocation); } catch (IOException e) { throw new StorageException("Could not initialize storage", e); } } }