使用uploadify上传文件

package com.jquery.jqueryupload; import java.io.File; import java.io.IOException; import java.util.Iterator; import java.util.List; 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; public class UploadServlet extends HttpServlet { @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { // TODO Auto-generated method stub this.doGet(req, resp); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { String savePath = this.getServletConfig().getServletContext() .getRealPath(""); savePath = savePath + "\\uploads\\"; File f1 = new File(savePath); if (!f1.exists()) { f1.mkdirs(); } DiskFileItemFactory fac = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(fac); upload.setHeaderEncoding("utf-8"); List fileList = null; try { fileList = upload.parseRequest(req); } catch (FileUploadException ex) { return; } Iterator<FileItem> it = fileList.iterator(); String name = ""; String extName = ""; while (it.hasNext()) { FileItem item = it.next(); if (!item.isFormField()) { name = item.getName(); long size = item.getSize(); String type = item.getContentType(); if (name == null || name.trim().equals("")) { continue; } //扩展名格式： if (name.lastIndexOf(".") >= 0) { extName = name.substring(name.lastIndexOf(".")); } File file = null; do { //生成文件名： name = name+""; file = new File(savePath + name + extName); } while (file.exists()); File saveFile = new File(savePath + name + extName); try { item.write(saveFile); } catch (Exception e) { e.printStackTrace(); } } } resp.getWriter().print(name + extName); } }