jsp批量文件上传
Ⅰ 怎么在 jsp 页面中上传文件
使用jsp smartupload
示例：部分文件代码 具体实现 找些教材
UploadServlet.java
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.jspsmart.upload.*;
import java.text.*;
import java.util.*;
/*******************************************************/
/* 该实例中尽可能多地用到了一些方法，在实际应用中 */
/* 我们可以根据自己的需要进行取舍！ */
/*******************************************************/
public class UploadServlet extends HttpServlet {
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// 新建一个SmartUpload对象,此项是必须的
SmartUpload myupload = new SmartUpload();
// 初始化,此项是必须的
ServletConfig config = getServletConfig();
myupload.initialize(config,request,response);
response.setContentType("text/html");
response.setCharacterEncoding("gb2312");
PrintWriter out = response.getWriter();
out.println("<h2>处理上传的文件</h2>");
out.println("<hr>");
try{
// 限制每个上传文件的最大长度
myupload.setMaxFileSize(1024*1024);
// 限制总上传数据的长度
myupload.setTotalMaxFileSize(5*1024*1024);
// 设定允许上传的文件（通过扩展名限制）
myupload.setAllowedFilesList("doc,txt,jpg,gif");
// 设定禁止上传的文件（通过扩展名限制）
myupload.setDeniedFilesList("exe,bat,jsp,htm,html,,");
// 上传文件,此项是必须的
myupload.upload();
// 统计上传文件的总数
int count = myupload.getFiles().getCount();
// 取得Request对象
Request myRequest = myupload.getRequest();
String rndFilename,fileExtName,fileName,filePathName,memo;
Date dt = null;
SimpleDateFormat fmt = new SimpleDateFormat("yyyyMMddHHmmssSSS");
// 逐一提取上传文件信息，同时可保存文件
for (int i=0;i<count;i++)
{
//取得一个上传文件
File file = myupload.getFiles().getFile(i);
// 若文件不存在则继续
if (file.isMissing()) continue;
// 取得文件名
fileName = file.getFileName();
// 取得文件全名
filePathName = file.getFilePathName();
// 取得文件扩展名
fileExtName = file.getFileExt();
// 取得随机文件名
dt = new Date(System.currentTimeMillis());
Thread.sleep(100);
rndFilename= fmt.format(dt)+"."+fileExtName;
memo = myRequest.getParameter("memo"+i);
// 显示当前文件信息
out.println("第"+(i+1)+"个文件的文件信息：<br>");
out.println(" 文件名为："+fileName+"<br>");
out.println(" 文件扩展名为："+fileExtName+"<br>");
out.println(" 文件全名为："+filePathName+"<br>");
out.println(" 文件大小为："+file.getSize()+"字节<br>");
out.println(" 文件备注为："+memo+"<br>");
out.println(" 文件随机文件名为："+rndFilename+"<br><br>");
// 将文件另存,以WEB应用的根目录作为上传文件的根目录
file.saveAs("/upload/" + rndFilename,myupload.SAVE_VIRTUAL);
}
out.println(count+"个文件上传成功！<br>");
}catch(Exception ex){
out.println("上传文件超过了限制条件，上传失败!<br>");
out.println("错误原因：<br>"+ex.toString());
}
out.flush();
out.close();
}
}
Ⅱ 姹备竴涓猨sp鍙浠ュ氭枃浠朵笂浼犵殑渚嫔瓙
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Ⅲ 用jsp 怎样实现文件上传
你下载一个jspsmart组件，网上很容易下到，用法如下，这是我程序的相关片断，供你参考： <%@ page import="com.jspsmart.upload.*" %>
<jsp:useBean id="mySmartUpload" scope="page" class="com.jspsmart.upload.SmartUpload" />
<%
String photoname="photoname";
// Variables
int count=0; // Initialization
mySmartUpload.initialize(pageContext); // Upload
mySmartUpload.upload();
for (int i=0;i<mySmartUpload.getFiles().getCount();i++){ // Retreive the current file
com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(i); // Save it only if this file exists
if (!myFile.isMissing()) {
java.util.Date thedate=new java.util.Date();
java.text.DateFormat df = new java.text.SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
photoname = df.format(thedate);
photoname +="."+ myFile.getFileExt();
myFile.saveAs("/docs/docimg/" + photoname);
count ++; } }
%>
<% String title="1";
String author="1";
String content="1";
String pdatetime="1";
String topic="1";
String imgintro="1";
String clkcount="1"; if(mySmartUpload.getRequest().getParameter("title")!=null){
title=(String)mySmartUpload.getRequest().getParameter("title");
title=new String(title.getBytes("gbk"),"ISO-8859-1");
}
if(mySmartUpload.getRequest().getParameter("author")!=null){
author=(String)mySmartUpload.getRequest().getParameter("author");
author=new String(author.getBytes("gbk"),"ISO-8859-1");
}
if(mySmartUpload.getRequest().getParameter("content")!=null){
content=(String)mySmartUpload.getRequest().getParameter("content");
content=new String(content.getBytes("gbk"),"ISO-8859-1");
}
if(mySmartUpload.getRequest().getParameter("pdatetime")!=null){
pdatetime=(String)mySmartUpload.getRequest().getParameter("pdatetime");
}
if(mySmartUpload.getRequest().getParameter("topic")!=null){
topic=(String)mySmartUpload.getRequest().getParameter("topic");
}
if(mySmartUpload.getRequest().getParameter("imgintro")!=null){
imgintro=(String)mySmartUpload.getRequest().getParameter("imgintro");
imgintro=new String(imgintro.getBytes("gbk"),"ISO-8859-1");
}
if(mySmartUpload.getRequest().getParameter("clkcount")!=null){
clkcount=(String)mySmartUpload.getRequest().getParameter("clkcount");
}
//out.println(code+name+birthday);
%>
Ⅳ jsp 如何实现文件上传和下载功能
上传：
MyjspForm mf = (MyjspForm) form;// TODO Auto-generated method stub
FormFile fname=mf.getFname();
byte [] fn = fname.getFileData();
OutputStream out = new FileOutputStream("D:\"+fname.getFileName());
Date date = new Date();
String title = fname.getFileName();
String url = "d:\"+fname.getFileName();
Upload ul = new Upload();
ul.setDate(date);
ul.setTitle(title);
ul.setUrl(url);
UploadDAO uld = new UploadDAO();
uld.save(ul);
out.write(fn);
out.close();
下载：
DownloadForm downloadForm = (DownloadForm)form;
String fname = request.getParameter("furl");
FileInputStream fi = new FileInputStream(fname);
byte[] bt = new byte[fi.available()];
fi.read(bt);
//设置文件是下载还是打开以及打开的方式msdownload表示下载；设置字湖集，//主要是解决文件中的中文信息
response.setContentType("application/msdownload;charset=gbk");
//文件下载后的默认保存名及打开方式
String contentDisposition = "attachment; filename=" + "java.txt";
response.setHeader("Content-Disposition",contentDisposition);
//设置下载长度
response.setContentLength(bt.length);
ServletOutputStream sos = response.getOutputStream();
sos.write(bt);
return null;
Ⅳ JSP页面使用了enctype="multipart/form-data" 上传文件的问题
s:file控件是个一拖三的玩意，一个file1的控件对应了三个Action类中的属性：file1，
file1ContentType和file1FileName。file1的类型是File，它对应的值是文件上传后临时存放
的位置，contenttype指文件类型，FileName指文件名称。
批量上传请使用List
Ⅵ jsp+servlet实现文件上传问题
try{
//1.获得上传帮助类SmartUpload SmartUpload su = new SmartUpload();
//2.设置上传允许大小,以B为单位 su.setMaxFileSize(3*1024*1024);
//3.设置允许上传图片格式 su.setAllowedFilesList("jpg,gif,bmp");
//4.初始化
su.initialize(this.getServletConfig(), request, response);
//上传
su.upload();
//获取上传文件的入口,客户端会认为上传是一堆文件 Files files = su.getFiles();
//上传一个,从0开始
File file = files.getFile(0);
//上传文件的名字
String fileName = file.getFileName();
//上传文件的后缀名
String fileExt = file.getFileExt();
//上传文件的大小
int fileSize = file.getSize();
//获取页面提交的值,此处的request不再是HttpServletRequest,必须使用SmartUpload提供的request
Request myreq = su.getRequest();
String username = myreq.getParameter("username");
String password = myreq.getParameter("password");
//设置上传图片的路径地址
java.io.File truefile = new java.io.File(this.getServletContext().getRealPath("/image"));
//不存在则创建
if(!truefile.exists()){
truefile.mkdir();
}
//对图片进行重命名 String trueFileName = new UUIDGenerator().generate().toString()+"."+fileExt;
//最终路径/image/435454343.jpg
String finalPath = "/"+truefile.getName()+"/"+trueFileName;
file.saveAs(finalPath);
Ⅶ jsp文件上传
public class MultipartTestServlet extends HttpServlet {
public MultipartTestServlet() { //构造方法
super();
}
public void doPost(HttpServletRequest request, HttpServletResponse response) //servlet的doPost方法处理POST请求
throws ServletException, IOException { //抛出异常
request.setCharacterEncoding("gbk"); //设置字符为GBK
RequestContext requestContext = new ServletRequestContext(request); //实例化RequestContext对象
if(FileUpload.isMultipartContent(requestContext)){
//判断是否包含 multipart 内容
DiskFileItemFactory factory = new DiskFileItemFactory();
// 创建基于磁盘的文件工厂
factory.setRepository(new File("c:/tmp/")); // 设置临时目录
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setHeaderEncoding("gbk");
upload.setSizeMax(2000000); //设置缓冲区大小
List items = new ArrayList();
try {
items = upload.parseRequest(request); // 得到所有的文件
} catch (FileUploadException e1) {
System.out.println("文件上传发生错误" + e1.getMessage());
}
Iterator it = items.iterator();
while(it.hasNext()){
FileItem fileItem = (FileItem) it.next();
if(fileItem.isFormField()){
System.out.println(fileItem.getFieldName() + " " + fileItem.getName() + " " + new String(fileItem.getString().getBytes("iso8859-1"), "gbk")); //获得表单中域的名字。获得从浏览器中取得的文件全路径
}else{
System.out.println(fileItem.getFieldName() + " " +
fileItem.getName() + " " +
fileItem.isInMemory() + " " +
fileItem.getContentType() + " " +
fileItem.getSize());
if(fileItem.getName()!=null && fileItem.getSize()!=0){
// 浏览器中取得的文件全路径不为空 大小 不为0 则写入
File fullFile = new File(fileItem.getName());
File newFile = new File("c:/temp/" + fullFile.getName());
try {
fileItem.write(newFile);
} catch (Exception e) {
e.printStackTrace();
}
}else{
System.out.println("文件没有选择 或 文件内容为空");
}
}
}
}
}
}
Ⅷ jsp涓濡备綍澧炲姞涓娄紶鏂囦欢镄勫姛鑳斤纻浠ｇ爜锛
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http://www.jspsmart.com
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涓夈佸亣濡傛槸resin杩愯孞SP锛岃峰湪resin镄刢onf/resin.conf涓镄
<web-app> 鍜 </web-app> 涓锷犲叆锛
<path-mapping url-pattern=钬/upload/*钬 real-path=钬柽:\jsp\jspsmartupload\upload钬/>
锲涖佷笂浼犵晫闱㈢殑浠ｇ爜濡备笅锛(鏂囦欢钖嶏细insert.htm)
<FORM METHOD="POST" ACTION=" uploadfile.jsp" ENCTYPE="multipart/form-data">
<INPUT TYPE="FILE" NAME="FILE1" SIZE="50"> <BR>
<INPUT TYPE="FILE" NAME="FILE2" SIZE="50"> <BR>
<INPUT TYPE="FILE" NAME="FILE3" SIZE="50"> <BR>
<INPUT TYPE="FILE" NAME="FILE4" SIZE="50"> <BR>
涓婚桡细 <input type="text" name="text1" > <br>
<INPUT type=submit value=鍐 瀹 name=ok>
</form>
娉ㄩ吨涓婇溃镄剅eal-path鐩褰
浜斻乽ploadfile.jsp镄勪唬镰佸备笅:
<锛匑page contentType="text/html;charset=gb2312"
language="java"
import="com.jspsmart.upload.*"锛>
<jsp:useBean id="mySmartUpload"
scope="page"
class="com.jspsmart.upload.SmartUpload" />