flex4+servlet批量上传
最近刚刚学习flex4 做了一个批量上传，也不知道这个是不是真正意义上的批量上传。
在这里记录一下，以后有时间再详细改进。
UploadServlet
package upload;import java.io.File;import java.io.IOException;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Iterator;import java.util.List;import java.util.Random;import java.util.UUID;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.commons.fileupload.FileItem;import org.apache.commons.fileupload.FileUploadException;import org.apache.commons.fileupload.disk.DiskFileItemFactory;import org.apache.commons.fileupload.servlet.ServletFileUpload;/** * * @author crystal */public class UploadServlet extends HttpServlet { /** * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods. * @param request servlet request * @param response servlet response */ // 定义文件的上传路径// 限制文件的上传大小 private int maxPostSize = 100 * 1024 * 1024; public UploadServlet() { super(); } public void destroy() { super.destroy(); } protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("Access !"); response.setContentType("text/html;charset=UTF-8");//保存文件到服务器中 DiskFileItemFactory factory = new DiskFileItemFactory(); factory.setSizeThreshold(4096); ServletFileUpload upload = new ServletFileUpload(factory); upload.setSizeMax(maxPostSize); try { List fileItems = upload.parseRequest(request); Iterator iter = fileItems.iterator(); while (iter.hasNext()) { FileItem item = (FileItem) iter.next(); if (!item.isFormField()) { String name = item.getName(); System.out.println(name); try { String ext=name.substring(name.lastIndexOf(".")+1); String s = UUID.randomUUID().toString().replaceAll("-", ""); String fileName =s+ "."+ext; item.write(new File(extracted(request)+"flv\"+ fileName)); // SaveFile s = new SaveFile(); // s.saveFile(name); } catch (Exception e) { e.printStackTrace(); } } } } catch (FileUploadException e) { e.printStackTrace(); System.out.println(e.getMessage() + "结束"); } }private String extracted(HttpServletRequest request) {return request.getRealPath("/");} // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code."> /** * Handles the HTTP <code>GET</code> method. * @param request servlet request * @param response servlet response */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } /** * Handles the HTTP <code>POST</code> method. * @param request servlet request * @param response servlet response */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } /** * Returns a short description of the servlet. */ public String getServletInfo() { return "Short description"; } // </editor-fold>}<?xml version="1.0" encoding="utf-8"?><s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" fontSize="12" creationComplete="init()" currentState="selected"><s:states><s:State name="selected"/><s:State name="upload"/><s:State name="finsh"/></s:states><fx:Declarations><s:RemoteObject id="uploadid" destination="uploadid" /> </fx:Declarations><fx:Script> <![CDATA[ import flash.events.*;import mx.collections.ArrayList;import mx.core.FlexGlobals;import upl.CustomFileReferenceList;import upl.FileReferenceListExample;private var files : FileReferenceList;[Bindable]private var fileArray : ArrayList= new ArrayList();private var serverUrl : String;private var userId : String;private var allowTypes : XML;private var fld:CustomFileReferenceList;private var fff:FileReferenceListExample;private function init() : void {Security.allowDomain("*");var params : Object = FlexGlobals.topLevelApplication.parameters;serverUrl = encodeURI(parameters.serverUrl);userId = params.userId;fld=new CustomFileReferenceList();fld.addEventListener(Event.SELECT, showSelect);new FileReferenceListExample(fld,finsh);}private function finsh(e:Event):void{currentState="finsh";fileArray = new ArrayList();}private function upload() : void {fld.browse();} private function showSelect(e:Event):void{for(var i:int = 0; i < fld.fileList.length; i++) {fileArray.addItem(fld.fileList[i]);}}private function onSelect(e:Event) : void {//fileArray = new ArrayList(files.fileList);for(var i:int = 0; i < fileArray.length; i++) {var file:FileReference = fileArray.source[i] as FileReference;var request: URLRequest = new URLRequest("http://localhost:8080/wb/UploadServlet")file.upload(request);//uploadid.uploadid(file.data,file.name); }currentState='upload'}protected function button1_clickHandler(event:MouseEvent):void{currentState="selected";fileArray = new ArrayList();}]]> </fx:Script> <s:VGroup width="577" height="363"><s:Button label="选择文件" click="upload();" includeIn="selected"/><s:List height="114" dataProvider="{fileArray}" itemRenderer="FileShow" includeIn="selected"/><s:List dataProvider="{fileArray}" itemRenderer="FileItem" borderVisible="false" includeIn="upload"/><s:Button includeIn="selected" click="onSelect(event)" label="上传文件"/><s:Button includeIn="finsh" label="返回" click="button1_clickHandler(event)"/></s:VGroup></s:Application><?xml version="1.0" encoding="utf-8"?><s:ItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" ><fx:Declarations><!-- 将非可视元素（例如服务、值对象）放在此处 --></fx:Declarations><fx:Script><![CDATA[private var _data:Object;override public function set data( obj : Object ) : void { this._data = obj; var file : FileReference = (this._data as FileReference);file.addEventListener(ProgressEvent.PROGRESS, onProgress); file.addEventListener(Event.COMPLETE, onComplete);fileName.text = file.name;}override public function get data() : Object { return this._data; }private function onProgress(e:ProgressEvent) : void {cancelBtn.visible = true;var loaded : uint = e.bytesLoaded / 1024;var total : uint = e.bytesTotal / 1024; var proc:uint = e.bytesLoaded / e.bytesTotal * 100; bar.setProgress(proc, 100);bar.label = proc + "%";labelProgress.text = loaded + "kb / " + total + "kb";}private function onComplete(e:Event) : void {cancelBtn.visible = false;//ExternalInterface.call("onUploadComplete");}private function cancelUpload(e:Event) : void {var file : FileReference = (this._data as FileReference);file.cancel();}]]></fx:Script><s:layout><s:VerticalLayout/></s:layout><s:HGroup verticalAlign="middle" paddingTop="5" paddingBottom="5"><s:Label id="fileName"/><mx:ProgressBar id="bar" labelPlacement="center" minimum="0" visible="true" maximum="100" label="0%" direction="right" mode="manual" width="200"/><s:Label id="labelProgress" /><s:Button id="cancelBtn" label="取消" click="cancelUpload(event)" visible="false" /></s:HGroup></s:ItemRenderer><?xml version="1.0" encoding="utf-8"?><s:ItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" ><s:layout><s:BasicLayout/></s:layout><fx:Declarations><!-- 将非可视元素（例如服务、值对象）放在此处 --></fx:Declarations><fx:Script><![CDATA[private var _data:Object;override public function set data( obj : Object ) : void { this._data = obj; var file : FileReference = (this._data as FileReference);fileName.text = file.name;}override public function get data() : Object { return this._data; }]]></fx:Script><s:HGroup verticalAlign="middle" paddingTop="5" paddingBottom="5"><s:Label id="fileName"/></s:HGroup></s:ItemRenderer>