Java ServletFileUpload类代码示例

import org.apache.tomcat.util.http.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
protected String parsePhoto(HttpServletRequest request) {
		String photo = null;
		ServletFileUpload fileUpload = new ServletFileUpload();
		try {
		    FileItemIterator items = fileUpload.getItemIterator(request);
		    while (items.hasNext()) {
		    	FileItemStream item = items.next();
		    	System.out.println("ITEM UPLOAD: "  + item.getName());
		    	System.out.println(item.openStream());
		    	photo = item.getName();
		    	InputStream is = item.openStream();
		    	byte [] buffer = new byte [1024];
		    	OutputStream os = new FileOutputStream(new File(pathToDownload + item.getName()));
		    	int read = 0;
		    	while ((read = is.read(buffer)) != -1) {
		            os.write(buffer, 0, read);
		    	}
		    	os.close();
		    }
		} catch (Exception ex) {
			ex.printStackTrace();
		}
		return photo;
}
 

import org.apache.tomcat.util.http.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
public WebappContext(ServletContext servletContext, OpenOffice openOffice) {
	DiskFileItemFactory fileItemFactory = new DiskFileItemFactory();
	fileUpload = new ServletFileUpload(fileItemFactory);
	if (openOffice.getFileSizeMax() != null) {
		fileUpload.setFileSizeMax(Integer.parseInt(openOffice.getFileSizeMax()));
		logger.info("max file upload size set to " + openOffice.getFileSizeMax());
	} else {
		logger.warn("max file upload size not set");
	}
	
	DefaultOfficeManagerConfiguration configuration = new DefaultOfficeManagerConfiguration();
	if (openOffice.getPort() != null) {
		String ports = openOffice.getPort();
		String[] portArr = ports.split(",");
		int[] portArrInt = new int[portArr.length];
		int i = 0;
		for (String port : portArr){
			portArrInt[i++] = Integer.parseInt(port);
		}
	    configuration.setPortNumbers(portArrInt);
	}
	if (openOffice.getHome() != null) {
	    configuration.setOfficeHome(new File(openOffice.getHome()));
	}
	if (StringUtils.isNotBlank(openOffice.getProfile())) {
	    configuration.setTemplateProfileDir(new File(openOffice.getProfile()));
	}

	officeManager = configuration.buildOfficeManager();
	documentConverter = new OfficeDocumentConverter(officeManager);
}
 

import org.apache.tomcat.util.http.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
public FormUploadHelper(HttpServletRequest request) throws FileUploadException, IOException
{
    ServletFileUpload upload = new ServletFileUpload();
    FileItemIterator iter = upload.getItemIterator(request);
    
    while (iter.hasNext())
    {
        FileItemStream item = iter.next();
                        
        if (!item.isFormField())
        {
            InputStream is = item.openStream();
            
            ByteArrayOutputStream bos = new ByteArrayOutputStream(is.available());

            int c;
            while ((c = is.read()) != -1) {
                bos.write(c);
            }
            
            files.put(item.getFieldName(), bos);
        }
        else
        {
            StringBuilder sb = TextUtils.toStringBuilder(item.openStream(), new StringBuilder(), true);
            ArrayList<String> a = fields.get(item.getFieldName());
            if (a == null) {
                a = new ArrayList<>();
            }
            a.add(sb.toString().trim());
            fields.put(item.getFieldName(), a);
        }
    }
}
 

import org.apache.tomcat.util.http.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
@Override
public void init() throws ServletException {
	DiskFileItemFactory fileFactory = new DiskFileItemFactory();
	File filesDir = (File) getServletContext().getAttribute("FILE_DIR_FILE");
	fileFactory.setRepository(filesDir);
	this.uploader = new ServletFileUpload(fileFactory);
}
 

import org.apache.tomcat.util.http.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
/**
 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
 */
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
	// TODO Auto-generated method stub
	
	if(!ServletFileUpload.isMultipartContent(request)){
		throw new ServletException("Content type is not multipart/form-data");
	}
	
	response.setContentType("text/html");
	PrintWriter out = response.getWriter();
	out.write("<html><head></head><body>");
	try {
		List<FileItem> fileItemsList = uploader.parseRequest(request);
		Iterator<FileItem> fileItemsIterator = fileItemsList.iterator();
		while(fileItemsIterator.hasNext()){
			FileItem fileItem = fileItemsIterator.next();
			System.out.println("FieldName = " + fileItem.getFieldName());
			System.out.println("FileName = " + fileItem.getName());
			System.out.println("ContentType = " + fileItem.getContentType());
			System.out.println("Size(byte) = " + fileItem.getSize());
			
			File file = new File(request.getServletContext().getAttribute("FILE_DIR") + File.separator + fileItem.getName());
			System.out.println("Absolute Path at server = " + file.getAbsolutePath());
			fileItem.write(file);
			out.write("File " + fileItem.getName() + "uploaded successfully." + "<br/>");
			out.write("<a href=\"UploadDownloadFileServlet?fileName=" + fileItem.getName() + "\"> Download" + fileItem.getName() + "</a>");
		}
	} catch (Exception e) {
		// TODO: handle exception
		out.write("Exception in uploading fiile");
	}
	
	out.write("</body></html>");
}
 

import org.apache.tomcat.util.http.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
public ServletFileUpload getFileUpload() {
	return fileUpload;
}
 

import org.apache.tomcat.util.http.fileupload.servlet.ServletFileUpload; //导入依赖的package包/类
public static boolean isMultiPartContent(HttpServletRequest request)
{
    return ServletFileUpload.isMultipartContent(request);
}