Java ServletFileUpload类代码示例

import org.apache.commons.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
/** 获取所有文本域 */
public static final List<?> getFileItemList(HttpServletRequest request, File saveDir) throws FileUploadException {
    if (!saveDir.isDirectory()) {
        saveDir.mkdir();
    }
    List<?> fileItems = null;
    RequestContext requestContext = new ServletRequestContext(request);
    if (FileUpload.isMultipartContent(requestContext)) {
        DiskFileItemFactory factory = new DiskFileItemFactory();
        factory.setRepository(saveDir);
        factory.setSizeThreshold(fileSizeThreshold);
        ServletFileUpload upload = new ServletFileUpload(factory);
        fileItems = upload.parseRequest(request);
    }
    return fileItems;
}
 

import org.apache.commons.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
/** 获取所有文本域 */
public static final List<?> getFileItemList(HttpServletRequest request, File saveDir) throws FileUploadException {
	if (!saveDir.isDirectory()) {
		saveDir.mkdir();
	}
	List<?> fileItems = null;
	RequestContext requestContext = new ServletRequestContext(request);
	if (FileUpload.isMultipartContent(requestContext)) {
		DiskFileItemFactory factory = new DiskFileItemFactory();
		factory.setRepository(saveDir);
		factory.setSizeThreshold(fileSizeThreshold);
		ServletFileUpload upload = new ServletFileUpload(factory);
		fileItems = upload.parseRequest(request);
	}
	return fileItems;
}
 

import org.apache.commons.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
/**
 * 文件上传处理类
 *
 * @return {@link UploadResult}
 * @throws Exception 抛出异常
 */
public UploadResult upload() throws Exception {
    boolean multipartContent = ServletFileUpload.isMultipartContent(request);
    if (!multipartContent) {
        throw new RuntimeException("上传表单enctype类型设置错误");
    }

    List<TextFormResult> textFormResultList = Lists.newArrayList();
    List<FileFormResult> fileFormResultList = Lists.newArrayList();

    List<FileItem> fileItems = upload.parseRequest(request);
    for (FileItem item : fileItems) {
        if (item.isFormField())
            textFormResultList.add(processFormField(item));
        else
            fileFormResultList.add(processUploadedFile(item));
    }
    return new UploadResult(textFormResultList, fileFormResultList);
}
 

import org.apache.commons.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
/** 获取所有文本域 */
public static List<?> getFileItemList(HttpServletRequest request, File saveDir) throws FileUploadException {
	if (!saveDir.isDirectory()) {
		saveDir.mkdir();
	}
	List<?> fileItems = null;
	RequestContext requestContext = new ServletRequestContext(request);
	if (FileUpload.isMultipartContent(requestContext)) {
		DiskFileItemFactory factory = new DiskFileItemFactory();
		factory.setRepository(saveDir);
		factory.setSizeThreshold(fileSizeThreshold);
		ServletFileUpload upload = new ServletFileUpload(factory);
		fileItems = upload.parseRequest(request);
	}
	return fileItems;
}
 

import org.apache.commons.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
private List<FileItem> getMultipartContentItems() throws IOException, FileUploadException {
  List<FileItem> items = null;
  boolean isMultipart = ServletFileUpload.isMultipartContent(req);    
  if (isMultipart) {
    DiskFileItemFactory factory = new DiskFileItemFactory();
    factory.setSizeThreshold(0);
    reposDir = new File(FileUtils.getTempDirectory(), File.separatorChar + UUID.randomUUID().toString());
    if (!reposDir.mkdirs()) {
      throw new XSLWebException(String.format("Could not create DiskFileItemFactory repository directory (%s)", reposDir.getAbsolutePath()));
    }
    factory.setRepository(reposDir);
    ServletFileUpload upload = new ServletFileUpload(factory);
    upload.setSizeMax(1024 * 1024 * webApp.getMaxUploadSize());
    items = upload.parseRequest(req);      
  }
  return items;
}
 

import org.apache.commons.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
/**
 * Gets the FileItemIterator of the input.
 * 
 * Can be used to process uploads in a streaming fashion. Check out:
 * http://commons.apache.org/fileupload/streaming.html
 * 
 * @return the FileItemIterator of the request or null if there was an
 *         error.
 */
public Optional<List<FormItem>> parseRequestMultiPartItems(String encoding) {
    DiskFileItemFactory factory = new DiskFileItemFactory();
    factory.setSizeThreshold(properties.getInt(Constants.PROPERTY_UPLOADS_MAX_SIZE/*Constants.Params.maxUploadSize.name()*/));//Configuration.getMaxUploadSize());
    factory.setRepository(new File(System.getProperty("java.io.tmpdir"))); //Configuration.getTmpDir());
    //README the file for tmpdir *MIGHT* need to go into Properties
    
    ServletFileUpload upload = new ServletFileUpload(factory);
    
    if(encoding != null)
        upload.setHeaderEncoding(encoding);
    upload.setFileSizeMax(properties.getInt(Constants.PROPERTY_UPLOADS_MAX_SIZE));
    
    try {
        List<FormItem> items = upload.parseRequest(request)
                .stream()
                .map(item -> new ApacheFileItemFormItem(item))
                .collect(Collectors.toList());
        return Optional.of(items);
    } catch (FileUploadException e) {
        //"Error while trying to process mulitpart file upload"
        //README: perhaps some logging
    }
    return Optional.empty();
}
 

import org.apache.commons.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
private ArrayList<File> extractBagFilesFromRequest(@Context HttpServletRequest req,
                                                   @Context HttpServletResponse res) throws Exception {
    File targetDir = null;
    try {
        File file = null;
        DiskFileItemFactory fileItemFactory = new DiskFileItemFactory();
        fileItemFactory.setSizeThreshold(1 * 1024 * 1024); // 1 MB
        Iterator items = new ServletFileUpload(fileItemFactory).parseRequest(req).iterator();
        while (items.hasNext()) {
            FileItem item = (FileItem) items.next();
            LOG.info("item Name = " + item.getName() + " ; content type = " + item.getContentType());
            file = new File(FileUtils.getTempDirectory(), item.getName());
            item.write(file);
        }
        targetDir = compressUtils.extractZippedBagFile(file.getAbsolutePath(), null);
        LOG.info("extractedBagFileLocation " + targetDir);
    } catch (IOException e) {
        LOG.error("IOException", e);
        sendResponseBag(res, e.getMessage(), "failure");
    } catch (FormatHelper.UnknownFormatException unknownFormatException) {
        LOG.error("unknownFormatException", unknownFormatException);
        sendResponseBag(res, unknownFormatException.getMessage(), "failure");
    }
    return compressUtils.getAllFilesList(targetDir);
}
 

import org.apache.commons.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
/**
 * 上传文件
 *
 * @param param
 * @param request
 * @return
 * @throws Exception
 */
@RequestMapping(value = "/fileUpload", method = RequestMethod.POST)
@ResponseBody
public ResponseEntity fileUpload(MultipartFileParam param, HttpServletRequest request) {
    boolean isMultipart = ServletFileUpload.isMultipartContent(request);
    if (isMultipart) {
        logger.info("上传文件start。");
        try {
            // 方法1
            //storageService.uploadFileRandomAccessFile(param);
            // 方法2 这个更快点
            storageService.uploadFileByMappedByteBuffer(param);
        } catch (IOException e) {
            e.printStackTrace();
            logger.error("文件上传失败。{}", param.toString());
        }
        logger.info("上传文件end。");
    }
    return ResponseEntity.ok().body("上传成功。");
}
 

import org.apache.commons.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
public void importProject(HttpServletRequest req, HttpServletResponse resp) throws Exception {
	DiskFileItemFactory factory = new DiskFileItemFactory();
	ServletContext servletContext = req.getSession().getServletContext();
	File repository = (File) servletContext.getAttribute("javax.servlet.context.tempdir");
	factory.setRepository(repository);
	ServletFileUpload upload = new ServletFileUpload(factory);
	InputStream inputStream=null;
	boolean overwriteProject=true;
	List<FileItem> items = upload.parseRequest(req);
	if(items.size()==0){
		throw new ServletException("Upload file is invalid.");
	}
	for(FileItem item:items){
		String name=item.getFieldName();
		if(name.equals("overwriteProject")){
			String overwriteProjectStr=new String(item.get());
			overwriteProject=Boolean.valueOf(overwriteProjectStr);
		}else if(name.equals("file")){
			inputStream=item.getInputStream();
		}
	}
	repositoryService.importXml(inputStream,overwriteProject);
	IOUtils.closeQuietly(inputStream);
	resp.sendRedirect(req.getContextPath()+"/urule/frame");
}
 

import org.apache.commons.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
public void importExcelTemplate(HttpServletRequest req, HttpServletResponse resp) throws Exception {
	DiskFileItemFactory factory=new DiskFileItemFactory();
	ServletFileUpload upload = new ServletFileUpload(factory);
	List<FileItem> items = upload.parseRequest(req);
	Iterator<FileItem> itr = items.iterator();
	List<Map<String,Object>> mapData=null;
	while (itr.hasNext()) {
		FileItem item = (FileItem) itr.next();
		String name=item.getFieldName();
		if(!name.equals("file")){
			continue;
		}
		InputStream stream=item.getInputStream();
		mapData=parseExcel(stream);
		httpSessionKnowledgeCache.put(req, IMPORT_EXCEL_DATA, mapData);
		stream.close();
		break;
	}
	httpSessionKnowledgeCache.put(req, IMPORT_EXCEL_DATA, mapData);
	writeObjectToJson(resp, mapData);
}
 

import org.apache.commons.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
protected void getServiceResult(HttpServletRequest request, Document document) throws Exception {
	// Check that we have a file upload request
	boolean isMultipart = ServletFileUpload.isMultipartContent(request);

	if (!isMultipart)
		throw new IllegalArgumentException("Not multipart content!");

	FileItemFactory factory = new DiskFileItemFactory();

	// Create a new file upload handler
	ServletFileUpload upload = new ServletFileUpload(factory);

	// Parse the request
	List<FileItem> items = GenericUtils.cast(upload.parseRequest(request));

	// Process the uploaded items
	handleFormFields(request);
	for (FileItem item : items) {
		doUpload(request, document, item);
	}
}
 

import org.apache.commons.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
public static String isValidImage(HttpServletRequest request, MultipartFile file){
    //最大文件大小
    long maxSize = 5242880;
    //定义允许上传的文件扩展名
    HashMap<String, String> extMap = new HashMap<String, String>();
    extMap.put("image", "gif,jpg,jpeg,png,bmp");

    if(!ServletFileUpload.isMultipartContent(request)){
        return "请选择文件";
    }

    if(file.getSize() > maxSize){
        return "上传文件大小超过5MB限制";
    }
    //检查扩展名
    String fileName=file.getOriginalFilename();
    String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();
    if(!Arrays.<String>asList(extMap.get("image").split(",")).contains(fileExt)){
        return "上传文件扩展名是不允许的扩展名\n只允许" + extMap.get("image") + "格式";
    }

    return "valid";
}
 

import org.apache.commons.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
private Collection<Part> parseMultipartWithCommonsFileUpload(HttpServletRequest request) throws IOException {
  if (sharedFileItemFactory.get() == null) {
    // Not a big deal if two threads actually set this up
    DiskFileItemFactory fileItemFactory = new DiskFileItemFactory(
        1 << 16, (File) servletContext.getAttribute("javax.servlet.context.tempdir"));
    fileItemFactory.setFileCleaningTracker(
        FileCleanerCleanup.getFileCleaningTracker(servletContext));
    sharedFileItemFactory.compareAndSet(null, fileItemFactory);
  }

  try {
    return new ServletFileUpload(sharedFileItemFactory.get()).parseRequest(request)
        .stream().map(FileItemPart::new).collect(Collectors.toList());
  } catch (FileUploadException e) {
    throw new IOException(e.getMessage());
  }
}
 

import org.apache.commons.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
public Map<String, Object> map(HttpServletRequest request) {
    ServletFileUpload upload = new ServletFileUpload(new DiskFileItemFactory());
    upload.setSizeMax(20 * 1024);
    upload.setFileSizeMax(10 * 1024);

    List<FileItem> items;
    try {
        items = upload.parseRequest(request);
    } catch (FileUploadException e) {
        throw new RequestMappingException("", e);
    }

    return items.stream().map(item -> {
        String key = item.getFieldName();
        if (item.isFormField()) {
            String value = item.getString();
            return new SimpleKeyValue<String, Object>(key, value);
        } else {
            return new SimpleKeyValue<String, Object>(key, item);
        }
    }).collect(Collectors.toMap(
            SimpleKeyValue::getKey,
            SimpleKeyValue::getValue
    ));
}
 

import org.apache.commons.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
/**
 * Basic constructor that takes the request object and saves it to be used by the subsequent
 * methods
 * 
 * @param request
 *          HttpServletRequest object originating from the user request.
 */
@SuppressWarnings("unchecked")
public VariablesBase(HttpServletRequest request) {
  if (request == null) {
    // logging exception to obtain stack trace to pinpoint the cause
    log4j.warn("Creating a VariablesBase with a null request", new Exception());
    this.session = new HttpSessionWrapper();
    this.isMultipart = false;
  } else {
    this.session = request.getSession(true);
    this.httpRequest = request;
    this.isMultipart = ServletFileUpload.isMultipartContent(new ServletRequestContext(request));
    if (isMultipart) {
      DiskFileItemFactory factory = new DiskFileItemFactory();
      // factory.setSizeThreshold(yourMaxMemorySize);
      // factory.setRepositoryPath(yourTempDirectory);
      ServletFileUpload upload = new ServletFileUpload(factory);
      // upload.setSizeMax(yourMaxRequestSize);
      try {
        items = upload.parseRequest(request);
      } catch (Exception ex) {
        ex.printStackTrace();
      }
    }
  }
}