使用uploadify插件(php版和Java版) 与 Dropzone.js插件分别实现附件上传的demo

package dropzone.util; import com.google.gson.Gson; import dropzone.entity.UploadFileResultEntity; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileItemFactory; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.json.JSONException; import org.json.JSONObject; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.File; import java.io.IOException; import java.io.PrintWriter; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Iterator; import java.util.List; /** * 使用dropzone插件上传 */ public class DropzoneUploadUtil { public static String uploadFilePath = "/Users/susu/file_test/file_upload/file_upload_0409"; /** * 上传附件 * @param request * @param response * @throws IOException * @throws JSONException */ public static void dropzoneUploadFile(HttpServletRequest request, HttpServletResponse response) throws IOException, JSONException { String physical_path = ""; List<UploadFileResultEntity> uploadFileResultClientList = new ArrayList<>(); List<UploadFileResultEntity> uploadFileResultServerList = new ArrayList<>(); Gson gson = new Gson(); JSONObject json = new JSONObject(); FileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); SimpleDateFormat fmt = new SimpleDateFormat("yyyy_MM_dd_HH_mm_ss_SSS"); String date = fmt.format(System.currentTimeMillis()); upload.setHeaderEncoding("UTF-8"); try { List items = upload.parseRequest(request); Iterator iter = items.iterator(); while (iter.hasNext()) { FileItem item = (FileItem) iter.next(); if (!item.isFormField()) { String OriginalName = item.getName().substring(item.getName().lastIndexOf("\\") + 1); String fileName = OriginalName.substring(0, OriginalName.lastIndexOf(".")) + "@@" + date + "@@" + item.getName().substring(item.getName().lastIndexOf("."), item.getName().length()); File f = new File(uploadFilePath); if (!f.exists()) { f.mkdirs(); } // server_path = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + "/temp/" + fileName; physical_path = uploadFilePath + "/" + fileName; File uploadedFile = new File(physical_path); System.out.println("physical_path:" + physical_path); item.write(uploadedFile); uploadFileResultServerList.add(new UploadFileResultEntity(fileName, uploadedFile.length(), physical_path, "")); uploadFileResultClientList.add(new UploadFileResultEntity(OriginalName, uploadedFile.length(), physical_path, "")); } } } catch (Exception e) { e.printStackTrace(); } response.setContentType("text/text;charset=utf-8"); PrintWriter out = response.getWriter(); json.put("error", false); json.put("uploadFileResultServerList", gson.toJson(uploadFileResultServerList)); json.put("uploadFileResultClientList", gson.toJson(uploadFileResultClientList)); out.print(json); out.flush(); out.close(); } /** * 删除附件（删除服务器上的附件） * @param request * @param response */ public static void dropzoneRemoveFile(HttpServletRequest request,HttpServletResponse response){ JSONObject json = new JSONObject(); String filePathsStr = (request.getParameter("filePaths") == null) ? "" : request.getParameter("filePaths").trim(); String[] filePathsArray = null; try { if (!filePathsStr.equals("")) { if (filePathsStr.indexOf("¤¤¤¤¤") > 0) { filePathsArray = filePathsStr.split("¤¤¤¤¤"); } else { filePathsArray = new String[1]; filePathsArray[0] = filePathsStr; } int deleteCount = removeFile(filePathsArray); json.put("count", deleteCount); } PrintWriter p = response.getWriter(); p.println(json); //response ajax data，InputThinPCAccount2.js receive this "flag"。 p.flush(); p.close(); } catch (JSONException e) { throw new RuntimeException(e); } catch (IOException e) { throw new RuntimeException(e); } } public static int removeFile(String[] paths) { int deleteCount = 0; for (String filePath : paths) { filePath = ScriptDecoderUtil.unescape(ScriptDecoderUtil.unescape(filePath)); File file = new File(filePath); if (!file.exists()) { System.out.println("系统找不到指定的路径:" + filePath); } else if (!file.delete()) { System.out.println("删除附件失败:" + filePath); } else { deleteCount++; } } return deleteCount; } }