SWFUpload综合运用。

1.首先引入swfupload 必须得js,和处理各项动作绑定的事件所在的js,(这个js是自己写的

<script type="text/javascript" src="fileprogress.js"></script><script type="text/javascript" src="handlers.js"></script><script type="text/javascript" src="swfupload.js"></script>

2.初始化swfupload参数，利用参数初始化swf对象

<script language="javascript">jQuery(function() {var xm_htglfj_setting = {id : "xm_htglfj",flash_url : "/shxxeps/assets/4c2fc69dc91c885837ce55d03493a5f5/com/zzxy/common/components/swfuploader/swfupload.swf",upload_url: "/shxxeps/servlet/UploadServlet",file_size_limit : "200 MB",file_size_limit : "200 MB",file_types : "*.*",file_types_description : "文件列表",file_upload_limit : 0,file_queue_limit : 0,use_query_string : true,post_params : {path : "/u01/webfile/xm_htgl_fj/",tableName : "xm_cght",columnName : "htfj",scr : "null",groupID : "1969724d6aac42c8b45f670ed953a862"},custom_settings : {progressTarget : "xm_htglfj_div",delFileAction: "/shxxeps/servlet/UploadServlet",name : "xm_htglfj"},button_image_url: "/shxxeps/assets/5d904f047b37404062ec450c8d94a599/com/zzxy/common/components/swfuploader/image/uploadBtn.png",button_width: "180",button_height: "18",button_placeholder_id: "xm_htglfj_btn",button_text: "<span class='button'>上传附件</span>",button_text_style: ".button { font-family: Helvetica, Arial, sans-serif; font-size: 12pt; }",button_text_left_padding: 18,button_text_top_padding: 0,button_window_mode: SWFUpload.WINDOW_MODE.TRANSPARENT,button_cursor: SWFUpload.CURSOR.HAND,file_queued_handler : fileQueued,file_queue_error_handler : fileQueueError,upload_start_handler : uploadStart,upload_progress_handler : uploadProgress,upload_error_handler : uploadError,upload_success_handler : uploadSuccess,file_dialog_start_handler : fileDialogStart,file_dialog_complete_handler: fileDialogComplete,init_uploaded_files_handler: initUploadedFiles,debug: false};var xm_htglfj_uploader = new SWFUpload(xm_htglfj_setting);});</script>

3.servlet 处理上传请求。

public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {String action = request.getParameter("action");if(StringUtils.isNotBlank(action) && action.equals("delete")) {String filePath = request.getParameter("filePath");File file = new File(Constants_core.GG_TEMP_PATH + filePath);if(file.exists()) {if(file.delete()) {this.ajaxOutPutText(response, "success");} else {this.ajaxOutPutText(response, "文件删除失败");}} else {this.ajaxOutPutText(response, "success");}} else {DiskFileItemFactory factory = new DiskFileItemFactory();// 设置内存缓冲区，超过后写入临时文件factory.setSizeThreshold(10240000);// 设置临时文件存储位置String base = Constants_core.GG_TEMP_PATH;File file = new File(base);if (!file.exists())file.mkdirs();factory.setRepository(file);ServletFileUpload upload = new ServletFileUpload(factory);// 设置单个文件的最大上传值upload.setFileSizeMax(10002400000l);// 设置整个request的最大值upload.setSizeMax(10002400000l);upload.setHeaderEncoding("UTF-8");try {long fileSize = 0;List items = upload.parseRequest(request);FileItem item = null;String fileName = null;String fileType = null;String realName = null;Map<String, String> paraMap = new HashMap<String, String>();paraMap.put("path", request.getParameter("path"));paraMap.put("tableName", request.getParameter("tableName"));paraMap.put("columnName", request.getParameter("columnName"));paraMap.put("scr", request.getParameter("scr"));paraMap.put("groupID", request.getParameter("groupID"));for (int i = 0; i < items.size(); i++) {item = (FileItem) items.get(i);// 保存文件if (!item.isFormField() && item.getName().length() > 0) {fileSize = item.getSize();realName = URLDecoder.decode(item.getName(), "UTF-8");fileType = realName.substring(realName.lastIndexOf("."));fileName = UUID.randomUUID().toString().replaceAll("-", "") + fileType;item.write(new File(base + fileName));} else if(item.isFormField()) {paraMap.put(item.getFieldName(), item.getString());}}JSONObject obj = new JSONObject();obj.put("fileName", fileName);obj.put("realName", realName);obj.put("fileSize", fileSize);obj.put("fileType", fileType);obj.put("path", paraMap.get("path"));obj.put("tableName", paraMap.get("tableName"));obj.put("columnName", paraMap.get("columnName"));obj.put("scr", paraMap.get("scr"));obj.put("filePath", base + fileName);String fileGroupID = paraMap.get("groupID");if(StringUtils.isNotBlank(fileGroupID)) {obj.put("groupID", fileGroupID);}this.ajaxOutPutJson(response, obj.toString());} catch (FileUploadException e) {e.printStackTrace();} catch (JSONException e) {e.printStackTrace();} catch (Exception e) {e.printStackTrace();}}}private void ajaxOutPutJson(HttpServletResponse response, Object outputString) throws IOException {response.setCharacterEncoding("UTF-8");response.setContentType("application/json");PrintWriter writer = response.getWriter();writer.write(outputString == null ? StringUtils.EMPTY : outputString.toString());}private void ajaxOutPutText(HttpServletResponse response, Object outputString) throws IOException {response.setCharacterEncoding("UTF-8");response.setContentType("text/plain");PrintWriter writer = response.getWriter();writer.write(outputString == null ? StringUtils.EMPTY : outputString.toString());}

4.如何接受返回的值，在自己写的处理js中

processCancel.click(function () {$.ajax({type: "POST",url: delFileAction,cache: false,dataType: "text",data: {filePath: fileName, action: "delete"},success:function(msg){if(msg=="success"){this_.setCancelled();this_.delFile(swfUploadInstance);}else{window.alert(msg);}  },error:function(msg){window.alert("\u6587\u4ef6\u5220\u9664\u5931\u8d25\uff01");}});

5.返回的json绑定到那个参数名上，在form提交时可以获得此值

processCancel.click(function () {if(this_.name) {this_.fileInput.attr("name", "delFiles_" + this_.name);} else {this_.fileInput.attr("name", "delFiles");}this_.fileContainer.css("display", "none");this_.delFile(swfUploadInstance);return false;});

6.form提交后台处理过程

String[] newFiles = request.getParameterValues(newFileParamName);String[] delFileIDS = request.getParameterValues(delFileParamName);

//这个数组是json数组。

处理过程都已写完，希望能帮助到朋友，如何哪里疑问，请给我留言哈