Java ServletRequestContext类代码示例

import org.apache.commons.fileupload.servlet.ServletRequestContext; //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.ServletRequestContext; //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.ServletRequestContext; //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.ServletRequestContext; //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();
      }
    }
  }
}
 

import org.apache.commons.fileupload.servlet.ServletRequestContext; //导入依赖的package包/类
/**
 * extracts attachments from the http request.
 *
 * @param httpRequest
 *            request containing attachments DefaultMultipartHttpServletRequest is supported
 * @param request
 *            {@link Request}
 * @return ids of extracted attachments
 * @throws IOException
 *             throws exception if problems during attachments accessing occurred
 * @throws FileUploadException
 *             Exception.
 * @throws AttachmentIsEmptyException
 *             Thrown, when the attachment is of zero size.
 * @throws AuthorizationException
 *             in case there is no authenticated user
 */
private List<AttachmentResource> extractAttachments(HttpServletRequest httpRequest,
        Request request) throws FileUploadException, IOException,
        AttachmentIsEmptyException, AuthorizationException {
    List<AttachmentResource> result = new ArrayList<>();
    if (httpRequest.getContentType().startsWith(AttachmentResourceHelper.MULTIPART_FORM_DATA)) {
        FileItemFactory factory = new DiskFileItemFactory();
        FileUpload upload = new FileUpload(factory);
        List<FileItem> items = upload.parseRequest(new ServletRequestContext(httpRequest));
        for (FileItem file : items) {
            if (!file.isFormField()) {
                AttachmentTO attachmentTo = new AttachmentStreamTO(file.getInputStream(),
                        AttachmentStatus.UPLOADED);
                AttachmentResourceHelper.assertAttachmentSize(file.getContentType(),
                        file.getSize(), false);
                attachmentTo.setMetadata(new ContentMetadata());
                attachmentTo.getMetadata().setFilename(getFileName(file.getName()));
                attachmentTo.getMetadata().setContentSize(file.getSize());
                result.add(persistAttachment(request, attachmentTo));
            }
        }
    }
    return result;
}
 

import org.apache.commons.fileupload.servlet.ServletRequestContext; //导入依赖的package包/类
/**
 * extracts attachments from the http request.
 *
 * @param httpRequest
 *            request containing attachments DefaultMultipartHttpServletRequest is supported
 * @param request
 *            {@link Request}
 * @return ids of extracted attachments
 * @throws MaxLengthReachedException
 *             attachment size is to large
 * @throws IOException
 *             throws exception if problems during attachments accessing occurred
 * @throws FileUploadException
 *             Exception.
 * @throws AttachmentIsEmptyException
 *             Thrown, when the attachment is of zero size.
 * @throws AuthorizationException
 *             in case there is no authenticated user
 */
private List<AttachmentResource> extractAttachments(HttpServletRequest httpRequest,
        Request request) throws MaxLengthReachedException, FileUploadException, IOException,
        AttachmentIsEmptyException, AuthorizationException {
    List<AttachmentResource> result = new ArrayList<AttachmentResource>();
    if (httpRequest.getContentType().startsWith(AttachmentResourceHelper.MULTIPART_FORM_DATA)) {
        FileItemFactory factory = new DiskFileItemFactory();
        FileUpload upload = new FileUpload(factory);
        List<FileItem> items = upload.parseRequest(new ServletRequestContext(httpRequest));
        for (FileItem file : items) {
            if (!file.isFormField()) {
                AttachmentTO attachmentTo = new AttachmentStreamTO(file.getInputStream(),
                        AttachmentStatus.UPLOADED);
                AttachmentResourceHelper.assertAttachmentSize(file.getContentType(),
                        file.getSize(), false);
                attachmentTo.setMetadata(new ContentMetadata());
                attachmentTo.getMetadata().setFilename(getFileName(file.getName()));
                attachmentTo.getMetadata().setContentSize(file.getSize());
                result.add(persistAttachment(request, attachmentTo));
            }
        }
    }
    return result;
}
 

import org.apache.commons.fileupload.servlet.ServletRequestContext; //导入依赖的package包/类
/**
 * extracts attachments from the http request.
 *
 * @param httpRequest
 *            request containing attachments DefaultMultipartHttpServletRequest is supported
 * @param request
 *            {@link Request}
 * @return ids of extracted attachments
 * @throws MaxLengthReachedException
 *             attachment size is to large
 * @throws IOException
 *             throws exception if problems during attachments accessing occurred
 * @throws FileUploadException
 *             Exception.
 * @throws AuthorizationException
 *             in case there is no authenticated user
 */
private List<AttachmentResource> extractAttachments(HttpServletRequest httpRequest,
        Request request) throws MaxLengthReachedException, FileUploadException, IOException,
        AuthorizationException {
    List<AttachmentResource> result = new ArrayList<AttachmentResource>();
    if (httpRequest.getContentType().startsWith(AttachmentResourceHelper.MULTIPART_FORM_DATA)) {
        FileItemFactory factory = new DiskFileItemFactory();
        FileUpload upload = new FileUpload(factory);
        List<FileItem> items = upload.parseRequest(new ServletRequestContext(httpRequest));
        for (FileItem file : items) {
            if (!file.isFormField()) {
                AttachmentTO attachmentTo = new AttachmentStreamTO(file.getInputStream(),
                        AttachmentStatus.UPLOADED);
                AttachmentResourceHelper.assertAttachmentSize(file.getContentType(),
                        file.getSize(), false);
                attachmentTo.setMetadata(new ContentMetadata());
                attachmentTo.getMetadata().setFilename(getFileName(file.getName()));
                attachmentTo.getMetadata().setContentSize(file.getSize());
                result.add(persistAttachment(request, attachmentTo));
            }
        }
    }
    return result;
}
 

import org.apache.commons.fileupload.servlet.ServletRequestContext; //导入依赖的package包/类
/**
 * extracts attachments from the http request.
 *
 * @param httpRequest
 *            request containing attachments DefaultMultipartHttpServletRequest is supported
 * @param request
 *            {@link Request}
 * @return ids of extracted attachments
 * @throws MaxLengthReachedException
 *             attachment size is to large
 * @throws IOException
 *             throws exception if problems during attachments accessing occurred
 * @throws FileUploadException
 *             Exception.
 * @throws AuthorizationException
 *             in case there is no authenticated user
 */
private List<AttachmentResource> extractAttachments(HttpServletRequest httpRequest,
        Request request) throws MaxLengthReachedException, FileUploadException, IOException,
        AuthorizationException {
    List<AttachmentResource> result = new ArrayList<AttachmentResource>();
    if (httpRequest.getContentType().startsWith(AttachmentResourceHelper.MULTIPART_FORM_DATA)) {
        FileItemFactory factory = new DiskFileItemFactory();
        FileUpload upload = new FileUpload(factory);
        List<FileItem> items = upload.parseRequest(new ServletRequestContext(httpRequest));
        for (FileItem file : items) {
            if (!file.isFormField()) {
                AttachmentTO attachmentTo = new AttachmentStreamTO(file.getInputStream(),
                        AttachmentStatus.UPLOADED);
                AttachmentResourceHelper.checkAttachmentSize(file);
                attachmentTo.setMetadata(new ContentMetadata());
                attachmentTo.getMetadata().setFilename(getFileName(file.getName()));
                attachmentTo.getMetadata().setContentSize(file.getSize());
                result.add(persistAttachment(request, attachmentTo));
            }
        }
    }
    return result;
}
 

import org.apache.commons.fileupload.servlet.ServletRequestContext; //导入依赖的package包/类
/**
 * @see http://www.oschina.net/code/snippet_698737_13402
 * @param request
 * @return
 * @throws IOException
 */
public static Map<String, Object> uploadFiles(HttpServlet servlet, HttpServletRequest request) {
    Map<String, Object> map = JwUtils.newHashMap();
    Map<String, String> fileMap = JwUtils.newHashMap();
    map.put("file", fileMap);

    DiskFileItemFactory factory = new DiskFileItemFactory();// 创建工厂
    factory.setSizeThreshold(1024 * 1024 * 30);// 设置最大缓冲区为30M

    // 设置缓冲区目录
    String savePath = servlet.getServletContext().getRealPath("/WEB-INF/temp");
    factory.setRepository(new File(savePath));

    FileUpload upload = new FileUpload(factory);// 获得上传解析器
    upload.setHeaderEncoding("UTF-8");// 解决上传文件名乱码
    
    try {
        String targetFolderPath = servlet.getServletContext().getRealPath("/WEB-INF/" + ConfigUtils.getProperty("web.files.upload.folder"));
        File targetFolder = new File(targetFolderPath);// 目标文件夹
        if(!targetFolder.exists()) {
            targetFolder.mkdir();
        }
        
        List<FileItem> fileItems = upload.parseRequest(new ServletRequestContext(request));// 解析请求体
        for (FileItem fileItem : fileItems) {
            if (fileItem.isFormField()) {// 判断是普通表单项还是文件上传项
                String name = fileItem.getFieldName();// 表单名
                String value = fileItem.getString("UTF-8");// 表单值
                map.put(name, value);
            } else {// 文件上传项
                String fileName = fileItem.getName();// 获取文件名
                if (StringUtils.isEmpty(fileName))// 判断是否上传了文件
                    continue;

                // 截取文件名
                int index = fileName.lastIndexOf("/");
                if (index > -1) {
                    fileName = fileName.substring(index);
                }

                // 检查文件是否允许上传
                index = fileName.lastIndexOf(".");
                if (index > -1 && index < fileName.length() - 1) {
                    String ext = fileName.substring(index + 1).toLowerCase();
                    if (!ConfigUtils.getString("web.files.upload.extension").contains(";" + ext + ";")) {
                        LOGGER.warn("The file {} is not allowed to upload.", fileName);
                        continue;
                    }
                }

                // 生成唯一文件名，保留原文件名
                String newFileName = UUID.randomUUID().toString();
                
                // 将文件内容写到服务器端
                String targetPath = targetFolderPath + "/" + newFileName;
                File targetFile = new File(targetPath);// 目标文件
                targetFile.createNewFile();
                fileItem.write(targetFile);

                fileItem.delete();// 删除临时文件
                fileMap.put(fileName, newFileName);
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return map;
}
 

import org.apache.commons.fileupload.servlet.ServletRequestContext; //导入依赖的package包/类
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
		throws Exception {
	if (request != null && ServletFileUpload.isMultipartContent(request)) {
		ServletRequestContext ctx = new ServletRequestContext(request);
		long requestSize = ctx.contentLength();
		if (requestSize > maxSize) {
			throw new MaxUploadSizeExceededException(maxSize);
		}
	}
	return true;
}
 

import org.apache.commons.fileupload.servlet.ServletRequestContext; //导入依赖的package包/类
protected List parseRequest(ServletRequestContext requestContext) throws FileUploadException {
    // Create a factory for disk-based file items
    FileItemFactory factory = new DiskFileItemFactory();
    // Create a new file upload handler
    ServletFileUpload upload = new ServletFileUpload(factory);
    // Parse the request
    return upload.parseRequest(requestContext);
}
 

import org.apache.commons.fileupload.servlet.ServletRequestContext; //导入依赖的package包/类
protected File uploadFile(HttpServletRequest request,
                          String repoDir,
                          HttpServletResponse response,
                          String extension) throws FileUploadException {

    response.setContentType("text/html; charset=utf-8");
    ServletRequestContext servletRequestContext = new ServletRequestContext(request);
    boolean isMultipart =
            ServletFileUpload.isMultipartContent(servletRequestContext);
    File uploadedFile = null;
    if (isMultipart) {
        try {
            // Create a new file upload handler
            List items = parseRequest(servletRequestContext);

            // Process the uploaded items
            for (Iterator iter = items.iterator(); iter.hasNext();) {
                FileItem item = (FileItem) iter.next();
                if (!item.isFormField()) {
                    String fileName = item.getName();
                    String fileExtension = fileName;
                    fileExtension = fileExtension.toLowerCase();
                    if (extension != null && !fileExtension.endsWith(extension)) {
                        throw new Exception(" Illegal file type. Only " +
                                            extension + " files can be uploaded");

                    }
                    String fileNameOnly = getFileName(fileName);
                    uploadedFile = new File(repoDir, fileNameOnly);
                    item.write(uploadedFile);
                }
            }
        } catch (Exception e) {
            String msg = "File upload failed";
            log.error(msg, e);
            throw new FileUploadException(msg, e);
        }
    }
    return uploadedFile;
}
 

import org.apache.commons.fileupload.servlet.ServletRequestContext; //导入依赖的package包/类
@Override
public boolean isMultipart(HttpServletRequest request) {
    // support HTTP PUT operation
    String method = request.getMethod().toLowerCase();
    if (S.neq("post", method) && S.neq("put", method)) {
        return false;
    }
    return FileUploadBase.isMultipartContent(new ServletRequestContext(request));
}
 

import org.apache.commons.fileupload.servlet.ServletRequestContext; //导入依赖的package包/类
protected Map<String, String[]> parseFileUpload() {
    //log.debug("parseFileUpload");
    Map<String, String[]> parameters = new Hashtable<String, String[]>();
    if (portletRequest instanceof HttpServletRequest) {
        HttpServletRequest hreq = (HttpServletRequest) portletRequest;
        //logRequestParameters();
        //logRequestAttributes();
        ServletRequestContext ctx = new ServletRequestContext(hreq);
        if (FileUpload.isMultipartContent(ctx)) {
            FileItemFactory factory = new DiskFileItemFactory();
            // Create a new file upload handler
            ServletFileUpload upload = new ServletFileUpload(factory);
            try {
                fileItems = upload.parseRequest(hreq);
            } catch (Exception e) {
                log.error("Unable to parse multi part form!!!", e);
            }
            if (fileItems != null) {
                //log.debug("File items has size " + fileItems.size());
                for (int i = 0; i < fileItems.size(); i++) {
                    FileItem item = (FileItem) fileItems.get(i);
                    String[] tmpstr = new String[1];
                    if (item.isFormField()) {
                        tmpstr[0] = item.getString();
                    } else {
                        tmpstr[0] = "fileinput";
                    }
                    //log.debug("File item " + item.getFieldName() + "->" + tmpstr[0]);
                    parameters.put(item.getFieldName(), tmpstr);
                }
            }
        }
    }
    return parameters;
}
 

import org.apache.commons.fileupload.servlet.ServletRequestContext; //导入依赖的package包/类
/**
 *
 * @param req
 * @param rpcRequest
 * @param service
 * @return
 * @throws Exception
 */
private Map<String, InputStream> getStreams(HttpServletRequest req, RpcRequest rpcRequest, HttpAction service) throws Exception {
    if (!FileUploadBase.isMultipartContent(new ServletRequestContext(req))) {
        return null;
    }
    int streamsNumber = getInputStreamsNumber(rpcRequest, service);
    boolean isResponseStreamed = service.isBinaryResponse();
    FileItemIterator iter = (FileItemIterator) req.getAttribute(REQ_ATT_MULTIPART_ITERATOR);
    int count = 0;
    final Map<String, InputStream> map = new HashMap();
    final File tempDirectory;
    if (streamsNumber > 1 || streamsNumber == 1 && isResponseStreamed) {
        tempDirectory = createTempUploadDirectory();
        req.setAttribute(REQ_ATT_TEMPORARY_FOLDER, tempDirectory);
    } else {
        tempDirectory = null;
    }
    FileItemStream item = (FileItemStream) req.getAttribute(REQ_ATT_MULTIPART_CURRENT_ITEM);
    long availableLength = RpcConfig.getInstance().getMaxRequestSize();
    while (item != null) {
        count++;
        long maxLength = Math.min(availableLength, RpcConfig.getInstance().getMaxFileSize());
        if (count < streamsNumber || isResponseStreamed) { // if response is streamed all inputstreams have to be readed first
            File file = new File(tempDirectory, item.getFieldName());
            FileOutputStream fos = new FileOutputStream(file);
            try {
                Miscellaneous.pipeSynchronously(new LimitedLengthInputStream(item.openStream(), maxLength), fos);
            } catch (MaxLengthExceededException ex) {
                if (maxLength == RpcConfig.getInstance().getMaxFileSize()) {
                    throw new MaxLengthExceededException("Upload part '" + item.getFieldName() + "' exceeds maximum length (" + RpcConfig.getInstance().getMaxFileSize() + " bytes)", RpcConfig.getInstance().getMaxFileSize());
                } else {
                    throw new MaxLengthExceededException("Request exceeds maximum length (" + RpcConfig.getInstance().getMaxRequestSize() + " bytes)", RpcConfig.getInstance().getMaxRequestSize());
                }
            }
            map.put(item.getFieldName(), new MetaDataInputStream(new FileInputStream(file), item.getName(), item.getContentType(), file.length(), null));
            availableLength -= file.length();
        } else if (count == streamsNumber) {
            map.put(item.getFieldName(), new MetaDataInputStream(new LimitedLengthInputStream(item.openStream(), maxLength), item.getName(), item.getContentType(), null, null));
            break;
        }
        req.setAttribute(REQ_ATT_MULTIPART_CURRENT_ITEM, item);
        if (iter.hasNext()) {
            item = iter.next();
        } else {
            item = null;
        }
    }
    if (count != streamsNumber) {
        throw new IllegalArgumentException("Invalid multipart request received. Number of uploaded files (" + count + ") does not match expected (" + streamsNumber + ")");
    }
    return map;
}