jsp大文件上传带进度条

public class Upload { private static long lastTime; private static int n; public static synchronized String getNo(){ long time=System.currentTimeMillis(); if(time==lastTime){ return time+ "_ "+n++; }else{ n=0; lastTime=time; return time+ "_ "+n; } } private List <FileItem> files=new ArrayList <FileItem> (); private HashMap <String,String> parameters=new HashMap <String,String> (); public Upload(HttpServletRequest request) throws FileUploadException{ DiskFileUpload fu = new DiskFileUpload(); fu.setHeaderEncoding( "gb2312 "); fu.setSizeMax(200000000); fu.setSizeThreshold(4096); List fileItems = fu.parseRequest(request); int length=fileItems.size(); for(int i=0;i <length;i++){ FileItem fi=(FileItem)fileItems.get(i); if (fi.isFormField()) { String name = fi.getFieldName(); String value = fi.getString(); parameters.put(name,value); }else{ files.add(fi); } } } public Accessory saveFile(FileItem fi) throws Exception{ if(fi.getName()==null||fi.getName().equals( " ")) return null; String name=null; String fileName = fi.getName(); name = fileName.substring(fileName.lastIndexOf( "\\ ") + 1 , fileName.length()); String temp=Upload.getNo(); String type=fileName.substring(fileName.lastIndexOf( ". ")); String tempName=temp+type; File file=new File( "D:/temp/ "+tempName); // File parent=file.getParentFile(); // if(!parent.exists())parent.mkdirs(); fi.write(file); Accessory accessory=new Accessory(); accessory.setName(name); accessory.setTempName(tempName); accessory.setPath( "D:/temp/ "); return accessory; } public static String toUtf8String(String s) { StringBuffer sb = new StringBuffer(); for (int i=0;i <s.length();i++) { char c = s.charAt(i); if (c > = 0 && c <= 255) { sb.append(c); } else { byte[] b; try { b = Character.toString(c).getBytes( "utf-8 "); } catch (Exception ex) { System.out.println(ex); b = new byte[0]; } for (int j = 0; j < b.length; j++) { int k = b[j]; if (k < 0) k += 256; sb.append( "% " + Integer.toHexString(k). toUpperCase()); } } } return sb.toString(); } public Accessory saveFile(FileItem fi,String filePath) throws Exception{ File rootPathFileDir = new File(filePath); if (rootPathFileDir.length() == 0 && !rootPathFileDir.isDirectory()){ rootPathFileDir.mkdirs(); } else if (!rootPathFileDir.isDirectory()){ rootPathFileDir.mkdirs(); } filePath = rootPathFileDir.getPath(); filePath = filePath.replaceAll( "\\\\ ", "/ "); System.out.println(rootPathFileDir.getPath()); String name=null; String fileName = fi.getName(); name = fileName.substring(fileName.lastIndexOf( "\\ ") + 1 , fileName.length()); String temp=Upload.getNo(); String type=fileName.substring(fileName.lastIndexOf( ". ")); String tempName=temp+type; File file=new File(filePath+ "/ "+tempName); // File parent=file.getParentFile(); // if(!parent.exists())parent.mkdirs(); fi.write(file); Accessory accessory=new Accessory(); accessory.setName(name); accessory.setTempName(tempName); accessory.setPath(filePath); return accessory; } public List <FileItem> getFiles() { return files; } public HashMap <String, String> getParameters() { return parameters; } } 修改 删除 举报 引用 回复 加为好友 发送私信 在线聊天 wzhting 动感地蛋 等级: 发表于：2007-07-18 15:22:372楼 得分:0 下面是一个servlet版本。拷贝可以直接使用 import java.io.File; import java.io.IOException; import java.io.PrintWriter; import java.util.Iterator; import java.util.List; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.fileupload.DiskFileUpload; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileItemFactory; import ziva.commons.util.ChineseEncoding; import com.sduept.sail.web.util.FileViewerBean; /** * @author laiy * */ /** * Servlet Class * * @web.servlet name= "Upload " * display-name= "Upload " * description= "动态产生资产类型树的节点 " * @web.servlet-mapping url-pattern= "/function/Servlet/fileupload.jsp " * @web.servlet-mapping url-pattern= "/function/functionupload/Servlet/fileupload.jsp " */ public class Upload extends HttpServlet { /** * */ private static final long serialVersionUID = 3567258888041432676L; /** * @param args */ // private String uploadPath = "D:\\learn\\java\\test\\ "; // 用于存放上传文件的目录 private String tempPath = FileViewerBean.TEMPDIR; // 用于存放临时文件的目录 public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { PrintWriter out = response.getWriter(); init(); try { // String uploadPath = request.getParameter( "uploadfilepath ");//上传文件路径 // String uploadFileName =request.getParameter( "uploadfilename ");//上传文件名称 String filepath = request.getParameter( "savefilepath "); // String filename = request.getParameter( "savefilename "); DiskFileUpload fu = new DiskFileUpload(); fu.setHeaderEncoding( "GB2312 "); // 设置最大文件尺寸 fu.setSizeMax(4194304); // 设置缓冲区大小 fu.setSizeThreshold(4096); // 设置临时目录： fu.setRepositoryPath(tempPath); List fileItems = fu.parseRequest(request); Iterator i = fileItems.iterator(); // 依次处理每一个文件： while (i.hasNext()) { FileItem fi = (FileItem) i.next(); // 获得文件名，这个文件名包括路径： String fileName = getFilename(fi.getName()); if (fileName != null) { File upLoadfile = new File(filepath + "\\ "+ fileName); if (upLoadfile.length() > 1){ throw new Exception( "上传文件已存在，请重新选择！ "); } fi.write(upLoadfile); } } out.println( "File Upload Sucess! "); out.println( " <script> window.history.back(); </script> "); } catch (Exception e) { // 可以跳转出错页面 out.println( " 上传文件出错！ " + e.getMessage()); e.printStackTrace(); } } private String getFilename(String name) { String rename = null; if (null != name) { int index = name.lastIndexOf( "\\ "); rename = name.substring(index+1,name.length()); } return rename; } public void init() throws ServletException { // 文件夹不存在就自动创建： //if(!new File(uploadPath).isDirectory()) // new File(uploadPath).mkdirs(); if(!new File(tempPath).isDirectory()) new File(tempPath).mkdirs(); } }