Java servlet上传文件（照片视频）

package com.suneasy.appaction;

import java.io.File;
import java.io.IOException;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.jspsmart.upload.Files;
import com.jspsmart.upload.SmartUpload;
import com.suneasy.web.dao.t_dao;
import com.suneasy.web.mod.app_add;
import com.suneasy.web.mod.util;

public class Upload extends HttpServlet {
private static final long serialVersionUID = 1L;

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

SmartUpload mySmartUpload = new SmartUpload();

try {

mySmartUpload.initialize(this.getServletConfig(), request, response); // 设置长传操作的初始化
mySmartUpload.setMaxFileSize(1024 * 1024 * 1024); // 设置上传文件的大小
mySmartUpload.upload();
Files files = mySmartUpload.getFiles(); // 获取上传的文件操作
com.jspsmart.upload.File singleFile = files.getFile(0); // 获取上传文件的单个文件

if (!singleFile.isMissing()) { // 判断该文件是否被选择
String fileType = singleFile.getFileName().substring(singleFile.getFileName().length()-3);
String filename=System.currentTimeMillis() + "." + fileType;
java.util.Date Datenow=new java.util.Date();//获取当前日期
java.text.SimpleDateFormat formatter = new java.text.SimpleDateFormat("yyyyMMdd");
String nowdate = formatter.format(Datenow); //将日期格式化
String realDirectory = request.getSession().getServletContext().getRealPath("/")+"video"+nowdate.substring(0,6);

filedir = realDirectory+"/" + filename; // 以系统时间作为上传文件名称，设置上传文件的完整路径
File file = new File(realDirectory);

if (!file.isDirectory()) { // 如果文件夹不存在就新建
file.mkdirs();
}

singleFile.saveAs(filedir); // 执行上传操作

}

} catch (Exception e) {
e.printStackTrace();
}

return;
}

}