java上传进度条,servlet加js

package lc.progress; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.Iterator; import java.util.List; import javax.servlet.ServletConfig; 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 { /** * */ private static final long serialVersionUID = 1L; @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { // TODO Auto-generated method stub this.doPost(req, resp); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { DiskFileItemFactory factory = new DiskFileItemFactory(); factory.setSizeThreshold(2048*1024); myProgressListener getBarListener = new myProgressListener(req); ServletFileUpload upload = new ServletFileUpload(factory); upload.setProgressListener(getBarListener); try { List formList = upload.parseRequest(req); Iterator<Object> formItem = formList.iterator(); // 将进度监听器加载进去 while (formItem.hasNext()) { FileItem item = (FileItem) formItem.next(); if (item.isFormField()) { System.out.println("Field Name:" + item.getFieldName()); } else { String fileName = item.getName().substring(item.getName().lastIndexOf("\\")+1); File file = new File("e:\\temp" + "\\" + fileName); System.out.println("e:\\temp" + "\\" + fileName); OutputStream out = item.getOutputStream(); InputStream in = item.getInputStream(); req.getSession().setAttribute("outPutStream", out); req.getSession().setAttribute("inPutStream", in); item.write(file); } } } catch (FileUploadException e2) { // TODO Auto-generated catch block e2.printStackTrace(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } @Override public void init(ServletConfig config) throws ServletException { // TODO Auto-generated method stub super.init(config); } }