flex

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" xmlns="*" creationComplete="init();">
<mx: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);
file.addEventListener(Event.COMPLETE,completeHandle);
}


private function completeHandle(event:Event):void{
? ? Alert.show("恭喜你，上传成功");
}


private function upload(): void{
var imageTypes:FileFilter = new FileFilter("Images (*.jpg,*.jpeg,*.png)","*.jpg;*.jpeg;*.png");
var allTypes:Array = new Array(imageTypes);
file.browse(allTypes);
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/FileUploaded/FileUploaded");
try {
file.upload(request);
} catch (error:Error) {
trace("上传失败");
}


}
}
]]>
</mx:Script>


<mx:Canvas width="100%" height="100%" x="10" y="170" fontSize="15">
<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>

</mx:Application>

package upload; 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; /** ?* ?* @author crystal ?*/ public class FileUploaded 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 ? ? private String uploadPath = "d:a"; // 限制文件的上传大小 ? ? private int maxPostSize = 100 * 1024 * 1024; ? ? public FileUploaded() { ? ? ? ? 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"); ? ? ? ? PrintWriter out = response.getWriter(); //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 { ? ? ? ? ? ? ? ? ? ? ? ? item.write(new File(uploadPath + name)); ? ? ? ? ? ? ? ? ? ? ? ?// SaveFile s = new SaveFile(); ? ? ? ? ? ? ? ? ? ? ? ?// s.saveFile(name); ? ? ? ? ? ? ? ? ? ? } catch (Exception e) { ? ? ? ? ? ? ? ? ? ? ? ? e.printStackTrace(); ? ? ? ? ? ? ? ? ? ? } ? ? ? ? ? ? ? ? } ? ? ? ? ? ? } ? ? ? ? } catch (FileUploadException e) { ? ? ? ? ? ? e.printStackTrace(); ? ? ? ? ? ? System.out.println(e.getMessage() + "结束"); ? ? ? ? } ? ? } ? ? // <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,IOException { ? ? ? ? processRequest(request,response); ? ? } ? ? /** ? ? ?* Handles the HTTP <code>POST</code> method. ? ? ?* @param request servlet request ? ? ?* @param response servlet response ? ? ?*/ ? ? protected void doPost(HttpServletRequest request,response); ? ? } ? ? /** ? ? ?* Returns a short description of the servlet. ? ? ?*/ ? ? public String getServletInfo() { ? ? ? ? return "Short description"; ? ? } ? ? // </editor-fold> }