SpringBoot开发案例之打造私有云网盘

 

前言

最近在做工作流的事情，正好有个需求，要添加一个附件上传的功能，曾找过不少上传插件，都不是特别满意。无意中发现一个很好用的开源web文件管理器插件 elfinder，功能比较完善，社区也很活跃，还方便二次开发。

环境搭建

软件地址SpringBoothttps://spring.io/projects/spring-boot/elFinderhttps://studio-42.github.io/elFinder/

项目截图

周末抽时间做了一个简单的案例，希望对大家有所帮助，下面是简单的项目截图。

 

 

 

 

 

项目功能

在线新建目录、文件、附件上传、下载、预览、在线打包，图片在线裁剪、编辑，实现列表试图、图标视图等等一些列功能。

项目配置

项目在第三方插件进行二次开发，基于 SpringBoot 注解配置实现。

application.properties 配置：

# 执行类，内部调用，实现前端相关功能
file-manager.command=com.itstyle.cloud.common.elfinder.command
file-manager.thumbnail.width=80
file-manager.volumes[0].Node=
file-manager.volumes[0].source=fileSystem
file-manager.volumes[0].alias=file
# 文件存放目录，可以自定义
file-manager.volumes[0].path=D:/cloudFile
file-manager.volumes[0]._default=true
file-manager.volumes[0].locale=
file-manager.volumes[0].constraint.locked=false
file-manager.volumes[0].constraint.readable=true
file-manager.volumes[0].constraint.writable=true

ElfinderConfiguration 读取配置：

@Component

@ConfigurationProperties(prefix="file-manager") //接收application.properties中的file-manager下面的属性

public class ElfinderConfiguration {

private Thumbnail thumbnail;

private String command;

private List volumes;

private Long maxUploadSize = -1L;

//省略部分代码

}

elfinderStorageFactory 初始化 基础Bean：

@Configuration
public class ElFinderConfig {
 @Autowired
 private ElfinderConfiguration elfinderConfiguration;
 @Bean(name = "commandFactory")
 public CommandFactory getCommandFactory() {
 CommandFactory commandFactory = new CommandFactory();
 commandFactory.setClassNamePattern(elfinderConfiguration.getCommand()+".%sCommand");
 return commandFactory;
 }
 @Bean(name = "elfinderStorageFactory")
 public ElfinderStorageFactory getElfinderStorageFactory() {
 DefaultElfinderStorageFactory elfinderStorageFactory = new DefaultElfinderStorageFactory();
 elfinderStorageFactory.setElfinderStorage(getElfinderStorage());
 return elfinderStorageFactory;
 }
 @Bean(name = "elfinderStorage")
 public ElfinderStorage getElfinderStorage() {
 DefaultElfinderStorage defaultElfinderStorage = new DefaultElfinderStorage();
 // creates thumbnail
 DefaultThumbnailWidth defaultThumbnailWidth = new DefaultThumbnailWidth();
 defaultThumbnailWidth.setThumbnailWidth(elfinderConfiguration.getThumbnail().getWidth().intValue());
 // creates volumes, volumeIds, volumeLocale and volumeSecurities
 Character defaultVolumeId = 'A';
 List elfinderConfigurationVolumes = elfinderConfiguration.getVolumes();
 List elfinderVolumes = new ArrayList<>(elfinderConfigurationVolumes.size());
 Map elfinderVolumeIds = new HashMap<>(elfinderConfigurationVolumes.size());
 Map elfinderVolumeLocales = new HashMap<>(elfinderConfigurationVolumes.size());
 List elfinderVolumeSecurities = new ArrayList<>();
 // creates volumes
 for (Node elfinderConfigurationVolume : elfinderConfigurationVolumes) {
 final String alias = elfinderConfigurationVolume.getAlias();
 final String path = elfinderConfigurationVolume.getPath();
 final String source = elfinderConfigurationVolume.getSource();
 final String locale = elfinderConfigurationVolume.getLocale();
 final boolean isLocked = elfinderConfigurationVolume.getConstraint().isLocked();
 final boolean isReadable = elfinderConfigurationVolume.getConstraint().isReadable();
 final boolean isWritable = elfinderConfigurationVolume.getConstraint().isWritable();
 // creates new volume
 Volume volume = VolumeSources.of(source).newInstance(alias, path);
 elfinderVolumes.add(volume);
 elfinderVolumeIds.put(volume, Character.toString(defaultVolumeId));
 elfinderVolumeLocales.put(volume, LocaleUtils.toLocale(locale));
 // creates security constraint
 SecurityConstraint securityConstraint = new SecurityConstraint();
 securityConstraint.setLocked(isLocked);
 securityConstraint.setReadable(isReadable);
 securityConstraint.setWritable(isWritable);
 // creates volume pattern and volume security
 final String volumePattern = Character.toString(defaultVolumeId) + ElFinderConstants.ELFINDER_VOLUME_SERCURITY_REGEX;
 elfinderVolumeSecurities.add(new DefaultVolumeSecurity(volumePattern, securityConstraint));
 // prepare next volumeId character
 defaultVolumeId++;
 }
 defaultElfinderStorage.setThumbnailWidth(defaultThumbnailWidth);
 defaultElfinderStorage.setVolumes(elfinderVolumes);
 defaultElfinderStorage.setVolumeIds(elfinderVolumeIds);
 defaultElfinderStorage.setVolumeLocales(elfinderVolumeLocales);
 defaultElfinderStorage.setVolumeSecurities(elfinderVolumeSecurities);
 return defaultElfinderStorage;
 }
}

CloudDiskController 控制层实现：

@Controller
@RequestMapping("elfinder/connector")
public class CloudDiskController {
 private static final Logger logger = LoggerFactory.getLogger(CloudDiskController.class);
 public static final String OPEN_STREAM = "openStream";
 public static final String GET_PARAMETER = "getParameter";
 @Resource(name = "commandFactory")
 private ElfinderCommandFactory elfinderCommandFactory;
 @Resource(name = "elfinderStorageFactory")
 private ElfinderStorageFactory elfinderStorageFactory;
 @RequestMapping
 public void connector(HttpServletRequest request, final HttpServletResponse response) throws IOException {
 try {
 	response.setCharacterEncoding("UTF-8");
 request = processMultipartContent(request);
 } catch (Exception e) {
 throw new IOException(e.getMessage());
 }
 String cmd = request.getParameter(ElFinderConstants.ELFINDER_PARAMETER_COMMAND);
 ElfinderCommand elfinderCommand = elfinderCommandFactory.get(cmd);
 try {
 final HttpServletRequest protectedRequest = request;
 elfinderCommand.execute(new ElfinderContext() {
 @Override
 public ElfinderStorageFactory getVolumeSourceFactory() {
 return elfinderStorageFactory;
 }
 @Override
 public HttpServletRequest getRequest() {
 return protectedRequest;
 }
 @Override
 public HttpServletResponse getResponse() {
 return response;
 }
 });
 } catch (Exception e) {
 logger.error("Unknown error", e);
 }
 }
 //省略部分代码
}

最后，前端页面引入：

小结

总体来说个人使用还是非常不错的，当然对于一些成熟的网盘系统还是有一些差距。SpringBoot开发案例之打造私有云网盘