java文件上传

/** * Program  : UploadServlet.java * Author   : liangda * Create   : 2010-4-9 上午09:19:00 * * Copyright 2009 by Embedded Internet Solutions Inc., * All rights reserved. * * This software is the confidential and proprietary information * of Embedded Internet Solutions Inc.("Confidential Information").   * You shall not disclose such Confidential Information and shall  * use it only in accordance with the terms of the license agreement  * you entered into with Embedded Internet Solutions Inc. * */package cn.ipanel.app.newspapers.web.servlet;import java.io.File;import java.io.IOException;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;import cn.ipanel.app.newspapers.define.Defines;/** *  * @author liangda * @version 1.0.0 * @2010-4-9 上午09:19:00 */public class UploadServlet extends HttpServlet {private static final long serialVersionUID = 51944239803133660L;@Overrideprotected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {req.setCharacterEncoding(Defines.SERVLET_ENCODING);// 使用fileUpload组件将保存文件到服务器中DiskFileItemFactory diskFileItemFactory = new DiskFileItemFactory();// 设置上传组建的缓冲大小diskFileItemFactory.setSizeThreshold(4096);ServletFileUpload uploader = new ServletFileUpload(diskFileItemFactory);uploader.setSizeMax(Defines.MAX_UPLOAD_FILE_SIZE);try {@SuppressWarnings("unchecked")List<FileItem> fileItems = uploader.parseRequest(req);for (FileItem fileItem : fileItems) {if (!fileItem.isFormField()) {String fileName = fileItem.getName();File uploadFolder = new File(Defines.ABS_PATH_OF_PROJECT + Defines.FLEX_UPLOAD_TEMPDIR);if (!uploadFolder.exists()) {uploadFolder.mkdirs();}fileItem.write(new File(uploadFolder, fileName));}}} catch (FileUploadException e) {e.printStackTrace();} catch (Exception e) {e.printStackTrace();}System.out.println("Access!");}@Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {this.doPost(req, resp);}}