在网上找的一个Flex文件上传代码,记录下来,以后用到的时候可以马上能用:
1. Flex 前端代码
- <?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" minWidth="955" minHeight="600"
- creationComplete="init();">
- <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[
- import flash.net.FileReference;
- import mx.controls.Alert;
- import mx.events.CloseEvent;
- import flash.events.*;
- private var file: FileReference;
- private function init(): void{
- Security.allowDomain("*");
- file = new FileReference();
- file.addEventListener(ProgressEvent.PROGRESS, onProgress);
- file.addEventListener(Event.SELECT, onSelect);
- }
- private function upload(): void{
- file.browse();
- }
- private function onSelect(e: Event): void{
- Alert.show("上传 " + file.name + " (共 "+Math.round(file.size)+" 字节)?",
- "确认上传",
- Alert.YES|Alert.NO,
- null,
- proceedWithUpload);
- }
- private function onProgress(e: ProgressEvent): void{
- lbProgress.text = " 已上传 " + e.bytesLoaded
- + " 字节,共 " + e.bytesTotal + " 字节";
- var proc: uint = e.bytesLoaded / e.bytesTotal * 100;
- bar.setProgress(proc, 100);
- bar.label= "当前进度: " + " " + proc + "%";
- }
- private function proceedWithUpload(e: CloseEvent): void{
- if (e.detail == Alert.YES){
- var request: URLRequest = new URLRequest("http://localhost:8080/firstFlex/fileUploadServlet");
- try {
- file.upload(request);
- } catch (error:Error) {
- trace("上传失败");
- }
- }
- }
- ]]>
- </fx:Script>
- <mx:Canvas width="100%" height="100%">
- <mx:VBox width="100%" horizontalAlign="center">
- <mx:Label id="lbProgress" text="上传"/>
- <mx:ProgressBar id="bar" labelPlacement="bottom" themeColor="#F20D7A"
- minimum="0" visible="true" maximum="100" label="当前进度: 0%"
- direction="right" mode="manual" width="200"/>
- <mx:Button label="上传文件" click="upload();"/>
- </mx:VBox>
- </mx:Canvas>
- </s:Application>
2. java Servlet端代码:
- package test;
- import java.io.File;
- import java.io.IOException;
- import java.io.PrintWriter;
- import java.util.Iterator;
- import java.util.List;
- 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;
- public class FileUploadServlet extends HttpServlet {
- private static final long serialVersionUID = 1L;
- //存放文件路径
- private String uploadPath = "D:/Tomcat 6.0/webapps/firstFlex/bin-debug/";
- private int maxPostSize = 100 * 1024 * 1024;
- public FileUploadServlet() {
- super();
- }
- public void destroy() {
- super.destroy();
- }
- public void doGet(HttpServletRequest request, HttpServletResponse response)
- throws ServletException, IOException {
- // String dressId = request.getParameter("dressID");
- // System.out.println(dressId);
- //防止标题中还有中文字符是出现乱码
- request.setCharacterEncoding("UTF-8");
- response.setContentType("text/html; charset=UTF-8");
- 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
- {
- item.write(new File(uploadPath + name));
- }
- catch (Exception e)
- {
- e.printStackTrace();
- }
- }
- }
- }
- catch (FileUploadException e)
- {
- e.printStackTrace();
- }
- }
- public void doPost(HttpServletRequest request, IOException {
- doGet(request, response);
- }
- public void init() throws ServletException {
- // Put your code here
- }
- }
- 3.下面是web.xml文件Servlet的配置部分,把它加入到web.xml中即可。
- <servlet>
- <servlet-name>fileUploadServlet</servlet-name>
- <servlet-class>test.FileUploadServlet</servlet-class>
- </servlet>
- <servlet-mapping>
- <servlet-name>fileUploadServlet</servlet-name>
- <url-pattern>/fileUploadServlet</url-pattern>
- </servlet-mapping>