jsp上傳文件到伺服器
A. jsp 大文件分片上傳處理如何實現
javaweb上傳文件
上傳文件的jsp中的部分
上傳文件同樣可以使用form表單向後端發請求，也可以使用 ajax向後端發請求
1.通過form表單向後端發送請求
<form id="postForm" action="${pageContext.request.contextPath}/UploadServlet" method="post" enctype="multipart/form-data">
<div class="bbxx wrap">
<inputtype="text" id="side-profile-name" name="username" class="form-control">
<inputtype="file" id="example-file-input" name="avatar">
<button type="submit" class="btn btn-effect-ripple btn-primary">Save</button>
</div>
</form>
改進後的代碼不需要form標簽，直接由控制項來實現。開發人員只需要關注業務邏輯即可。JS中已經幫我們封閉好了
this.post_file = function ()
{
$.each(this.ui.btn, function (i, n) { n.hide();});
this.ui.btn.stop.show();
this.State = this.Config.state.Posting;//
this.app.postFile({ id: this.fileSvr.id, pathLoc: this.fileSvr.pathLoc, pathSvr:this.fileSvr.pathSvr,lenSvr: this.fileSvr.lenSvr, fields: this.fields });
};
通過監控工具可以看到控制項提交的數據，非常的清晰，調試也非常的簡單。
2.通過ajax向後端發送請求
$.ajax({
url : "${pageContext.request.contextPath}/UploadServlet",
type : "POST",
data : $( '#postForm').serialize(),
success : function(data) {
$( '#serverResponse').html(data);
},
error : function(data) {
$( '#serverResponse').html(data.status + " : " + data.statusText + " : " + data.responseText);
}
});
ajax分為兩部分，一部分是初始化，文件在上傳前通過AJAX請求通知服務端進行初始化操作
this.md5_complete = function (json)
{
this.fileSvr.md5 = json.md5;
this.ui.msg.text("MD5計算完畢，開始連接伺服器...");
this.event.md5Complete(this, json.md5);//biz event
var loc_path = encodeURIComponent(this.fileSvr.pathLoc);
var loc_len = this.fileSvr.lenLoc;
var loc_size = this.fileSvr.sizeLoc;
var param = jQuery.extend({}, this.fields, this.Config.bizData, { md5: json.md5, id: this.fileSvr.id, lenLoc: loc_len, sizeLoc: loc_size, pathLoc: loc_path, time: new Date().getTime() });
$.ajax({
type: "GET"
, dataType: 'jsonp'
, jsonp: "callback" //自定義的jsonp回調函數名稱，默認為jQuery自動生成的隨機函數名
, url: this.Config["UrlCreate"]
, data: param
, success: function (sv)
{
_this.svr_create(sv);
}
, error: function (req, txt, err)
{
_this.Manager.RemoveQueuePost(_this.fileSvr.id);
alert("向伺服器發送MD5信息錯誤！" + req.responseText);
_this.ui.msg.text("向伺服器發送MD5信息錯誤");
_this.ui.btn.cancel.show();
_this.ui.btn.stop.hide();
}
, complete: function (req, sta) { req = null; }
});
};
在文件上傳完後向伺服器發送通知
this.post_complete = function (json)
{
this.fileSvr.perSvr = "100%";
this.fileSvr.complete = true;
$.each(this.ui.btn, function (i, n)
{
n.hide();
});
this.ui.process.css("width", "100%");
this.ui.percent.text("(100%)");
this.ui.msg.text("上傳完成");
this.Manager.arrFilesComplete.push(this);
this.State = this.Config.state.Complete;
//從上傳列表中刪除
this.Manager.RemoveQueuePost(this.fileSvr.id);
//從未上傳列表中刪除
this.Manager.RemoveQueueWait(this.fileSvr.id);
var param = { md5: this.fileSvr.md5, uid: this.uid, id: this.fileSvr.id, time: new Date().getTime() };
$.ajax({
type: "GET"
, dataType: 'jsonp'
, jsonp: "callback" //自定義的jsonp回調函數名稱，默認為jQuery自動生成的隨機函數名
, url: _this.Config["UrlComplete"]
, data: param
, success: function (msg)
{
_this.event.fileComplete(_this);//觸發事件
_this.post_next();
}
, error: function (req, txt, err) { alert("文件-向伺服器發送Complete信息錯誤！" + req.responseText); }
, complete: function (req, sta) { req = null; }
});
};
這里需要處理一個MD5秒傳的邏輯，當伺服器存在相同文件時，不需要用戶再上傳，而是直接通知用戶秒傳
this.post_complete_quick = function ()
{
this.fileSvr.perSvr = "100%";
this.fileSvr.complete = true;
this.ui.btn.stop.hide();
this.ui.process.css("width", "100%");
this.ui.percent.text("(100%)");
this.ui.msg.text("伺服器存在相同文件，快速上傳成功。");
this.Manager.arrFilesComplete.push(this);
this.State = this.Config.state.Complete;
//從上傳列表中刪除
this.Manager.RemoveQueuePost(this.fileSvr.id);
//從未上傳列表中刪除
this.Manager.RemoveQueueWait(this.fileSvr.id);
//添加到文件列表
this.post_next();
this.event.fileComplete(this);//觸發事件
};
這里可以看到秒傳的邏輯是非常 簡單的，並不是特別的復雜。
var form = new FormData();
form.append("username","zxj");
form.append("avatar",file);
//var form = new FormData($("#postForm")[0]);
$.ajax({
url:"${pageContext.request.contextPath}/UploadServlet",
type:"post",
data:form,
processData:false,
contentType:false,
success:function(data){
console.log(data);
}
});
java部分
文件初始化的邏輯，主要代碼如下
FileInf fileSvr= new FileInf();
fileSvr.id = id;
fileSvr.fdChild = false;
fileSvr.uid = Integer.parseInt(uid);
fileSvr.nameLoc = PathTool.getName(pathLoc);
fileSvr.pathLoc = pathLoc;
fileSvr.lenLoc = Long.parseLong(lenLoc);
fileSvr.sizeLoc = sizeLoc;
fileSvr.deleted = false;
fileSvr.md5 = md5;
fileSvr.nameSvr = fileSvr.nameLoc;
//所有單個文件均以uuid/file方式存儲
PathBuilderUuid pb = new PathBuilderUuid();
fileSvr.pathSvr = pb.genFile(fileSvr.uid,fileSvr);
fileSvr.pathSvr = fileSvr.pathSvr.replace("\\","/");
DBConfig cfg = new DBConfig();
DBFile db = cfg.db();
FileInf fileExist = new FileInf();
boolean exist = db.exist_file(md5,fileExist);
//資料庫已存在相同文件，且有上傳進度，則直接使用此信息
if(exist && fileExist.lenSvr > 1)
{
fileSvr.nameSvr = fileExist.nameSvr;
fileSvr.pathSvr = fileExist.pathSvr;
fileSvr.perSvr = fileExist.perSvr;
fileSvr.lenSvr = fileExist.lenSvr;
fileSvr.complete = fileExist.complete;
db.Add(fileSvr);
//觸發事件
up6_biz_event.file_create_same(fileSvr);
}//此文件不存在
else
{
db.Add(fileSvr);
//觸發事件
up6_biz_event.file_create(fileSvr);
FileBlockWriter fr = new FileBlockWriter();
fr.CreateFile(fileSvr.pathSvr,fileSvr.lenLoc);
}
接收文件塊數據，在這個邏輯中我們接收文件塊數據。控制項對數據進行了優化，可以方便調試。如果用監控工具可以看到控制項提交的數據。
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
List files = null;
try
{
files = upload.parseRequest(request);
}
catch (FileUploadException e)
{// 解析文件數據錯誤
out.println("read file data error:" + e.toString());
return;
}
FileItem rangeFile = null;
// 得到所有上傳的文件
Iterator fileItr = files.iterator();
// 循環處理所有文件
while (fileItr.hasNext())
{
// 得到當前文件
rangeFile = (FileItem) fileItr.next();
if(StringUtils.equals( rangeFile.getFieldName(),"pathSvr"))
{
pathSvr = rangeFile.getString();
pathSvr = PathTool.url_decode(pathSvr);
}
}
boolean verify = false;
String msg = "";
String md5Svr = "";
long blockSizeSvr = rangeFile.getSize();
if(!StringUtils.isBlank(blockMd5))
{
md5Svr = Md5Tool.fileToMD5(rangeFile.getInputStream());
}
verify = Integer.parseInt(blockSize) == blockSizeSvr;
if(!verify)
{
msg = "block size error sizeSvr:" + blockSizeSvr + "sizeLoc:" + blockSize;
}
if(verify && !StringUtils.isBlank(blockMd5))
{
verify = md5Svr.equals(blockMd5);
if(!verify) msg = "block md5 error";
}
if(verify)
{
//保存文件塊數據
FileBlockWriter res = new FileBlockWriter();
//僅第一塊創建
if( Integer.parseInt(blockIndex)==1) res.CreateFile(pathSvr,Long.parseLong(lenLoc));
res.write( Long.parseLong(blockOffset),pathSvr,rangeFile);
up6_biz_event.file_post_block(id,Integer.parseInt(blockIndex));
JSONObject o = new JSONObject();
o.put("msg", "ok");
o.put("md5", md5Svr);
o.put("offset", blockOffset);//基於文件的塊偏移位置
msg = o.toString();
}
rangeFile.delete();
out.write(msg);
B. jsp上傳一個文件夾下的所有文件
jsp上傳一個文件夾下的所有文件：
1、上傳的upload.jsp：
<%@pagelanguage="java"contentType="text/html;charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPEhtmlPUBLIC"-//W3C//DTDHTML4.01Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<metahttp-equiv="Content-Type"content="text/html;charset=ISO-8859-1">
<title>FileUpload</title>
</head>
<body>
<formmethod="post"action="UploadServlet"enctype="multipart/form-data">
Selectfiletoupload:
<inputtype="file"name="dataFile"id="fileChooser"/><br/><br/>
<inputtype="submit"value="Upload"/>
</form>
</body>
</html>
2、後台servlet：
{
protectedvoiddoPost(HttpServletRequestrequest,HttpServletResponseresponse)
throwsServletException,IOException{
booleanisMultipart=ServletFileUpload.isMultipartContent(request);
if(isMultipart){
//Createafactoryfordisk-basedfileitems
FileItemFactoryfactory=newDiskFileItemFactory();
//Createanewfileuploadhandler
ServletFileUploapload=newServletFileUpload(factory);
try{
//Parsetherequest
Listitems=upload.parseRequest(request);
Iteratoriterator=items.iterator();
while(iterator.hasNext()){
FileItemitem=(FileItem)iterator.next();
if(!item.isFormField()){
StringfileName=item.getName();
Stringroot=getServletContext().getRealPath("/");
Filepath=newFile(root+"/uploads");
if(!path.exists()){
booleanstatus=path.mkdirs();
}
FileuploadedFile=newFile(path+"/"+fileName);
System.out.println(uploadedFile.getAbsolutePath());
item.write(uploadedFile);
}
}
}catch(FileUploadExceptione){
e.printStackTrace();
}catch(Exceptione){
e.printStackTrace();
}
}
}
}
C. java 求jsp上傳圖片到伺服器代碼
提交頁面表單
<form action="up.jsp" enctype="multipart/form-data" method="post">
<input type="file" name="file">
<input type="submit" value="確定">
</form>
上傳頁面up.jsp
<%@page import="java.io.FileWriter"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
import="java.io.*"
pageEncoding="UTF-8"%>
<%
/**
協議頭四行內容
45 -----------------------------7de231211204c4
80 Content-Disposition: form-data; name="file"; filename="xx.txt"
26 Content-Type: text/plain
2
標記文件結尾
-----------------------------7de231211204c4--
**/
ServletInputStream sin = request.getInputStream();
byte[] buffer = new byte[1024 * 8];
int length = 0, row = 0;
String mark = "";
String filename = "";
while ((length = sin.readLine(buffer, 0, buffer.length)) > 0) {
out.println(length + " " + new String(buffer, 0, length, "UTF-8") + "<br>");
String s = new String(buffer, 0, length, "UTF-8");
if (row == 0)
mark = s.trim();
else if (s.indexOf("filename=") > 0) {
int end = s.lastIndexOf("\"");
int start = s.substring(0, end).lastIndexOf("\"");
filename = s.substring(start + 1, end);
} else if ("".equals(s.trim()))
break;
row ++;
}
out.println("filename: " + filename + "<br>");
filename = request.getRealPath("/") + "../" + filename;
FileOutputStream fout = new FileOutputStream(filename);
while ((length = sin.readLine(buffer, 0, buffer.length)) > 0) {
String s = new String(buffer, 0, length);
if (s.startsWith(mark))
break;
fout.write(buffer, 0, length);
}
fout.flush();
fout.close();
File f = new File(filename);
out.println(f.exists());
out.println(f.getAbsolutePath());
%>
D. jsp上傳文件的問題
用JSP實現文件上傳功能，參考如下：
UploadExample.jsp
<%@ page contentType="text/html;charset=gb2312"%>
<html>
<title><%= application.getServerInfo() %></title>
<body>
上傳文件程序應用示例
<form action="doUpload.jsp" method="post" enctype="multipart/form-data">
<%-- 類型enctype用multipart/form-data，這樣可以把文件中的數據作為流式數據上傳，不管是什麼文件類型，均可上傳。--%>
請選擇要上傳的文件<input type="file" name="upfile" size="50">
<input type="submit" value="提交">
</form>
</body>
</html>
doUpload.jsp
<%@ page contentType="text/html; charset=GBK" %>
<%@ page import="java.io.*"%>
<%@ page import="java.util.*"%>
<%@ page import="javax.servlet.*"%>
<%@ page import="javax.servlet.http.*"%>
<html><head><title>upFile</title></head>
<body bgcolor="#ffffff">
<%
//定義上載文件的最大位元組
int MAX_SIZE = 102400 * 102400;
// 創建根路徑的保存變數
String rootPath;
//聲明文件讀入類
DataInputStream in = null;
FileOutputStream fileOut = null;
//取得客戶端的網路地址
String remoteAddr = request.getRemoteAddr();
//獲得伺服器的名字
String serverName = request.getServerName();
//取得互聯網程序的絕對地址
String realPath = request.getRealPath(serverName);
realPath = realPath.substring(0,realPath.lastIndexOf("\\"));
//創建文件的保存目錄
rootPath = realPath + "\\upload\\";
//取得客戶端上傳的數據類型
String contentType = request.getContentType();
try{
if(contentType.indexOf("multipart/form-data") >= 0){
//讀入上傳的數據
in = new DataInputStream(request.getInputStream());
int formDataLength = request.getContentLength();
if(formDataLength > MAX_SIZE){
out.println("<P>上傳的文件位元組數不可以超過" + MAX_SIZE + "</p>");
return;
}
//保存上傳文件的數據
byte dataBytes[] = new byte[formDataLength];
int byteRead = 0;
int totalBytesRead = 0;
//上傳的數據保存在byte數組
while(totalBytesRead < formDataLength){
byteRead = in.read(dataBytes,totalBytesRead,formDataLength);
totalBytesRead += byteRead;
}
//根據byte數組創建字元串
String file = new String(dataBytes);
//out.println(file);
//取得上傳的數據的文件名
String saveFile = file.substring(file.indexOf("filename=\"") + 10);
saveFile = saveFile.substring(0,saveFile.indexOf("\n"));
saveFile = saveFile.substring(saveFile.lastIndexOf("\\") + 1,saveFile.indexOf("\""));
int lastIndex = contentType.lastIndexOf("=");
//取得數據的分隔字元串
String boundary = contentType.substring(lastIndex + 1,contentType.length());
//創建保存路徑的文件名
String fileName = rootPath + saveFile;
//out.print(fileName);
int pos;
pos = file.indexOf("filename=\"");
pos = file.indexOf("\n",pos) + 1;
pos = file.indexOf("\n",pos) + 1;
pos = file.indexOf("\n",pos) + 1;
int boundaryLocation = file.indexOf(boundary,pos) - 4;
//out.println(boundaryLocation);
//取得文件數據的開始的位置
int startPos = ((file.substring(0,pos)).getBytes()).length;
//out.println(startPos);
//取得文件數據的結束的位置
int endPos = ((file.substring(0,boundaryLocation)).getBytes()).length;
//out.println(endPos);
//檢查上載文件是否存在
File checkFile = new File(fileName);
if(checkFile.exists()){
out.println("<p>" + saveFile + "文件已經存在.</p>");
}
//檢查上載文件的目錄是否存在
File fileDir = new File(rootPath);
if(!fileDir.exists()){
fileDir.mkdirs();
}
//創建文件的寫出類
fileOut = new FileOutputStream(fileName);
//保存文件的數據
fileOut.write(dataBytes,startPos,(endPos - startPos));
fileOut.close();
out.println(saveFile + "文件成功上載.</p>");
}else{
String content = request.getContentType();
out.println("<p>上傳的數據類型不是multipart/form-data</p>");
}
}catch(Exception ex){
throw new ServletException(ex.getMessage());
}
%>
</body>
</html>
運行方法，將這兩個JSP文件放在同一路徑下，運行UploadExample.jsp即可。
E. 怎麼用JSP把本地的文件夾上傳到ftp伺服器
前段時間做了一個文件上傳ftp功能，你參照一下
package com.ftp.upload;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;
public class FTPUpload {
private FTPClient ftpClient = null;
private OutputStream outSteam = null;
/**
* ftp伺服器地址
*/
private String hostname = "192.168.1.2";
/**
* ftp伺服器埠
*/
int port = 21;
/**
* 登錄名
*/
private String username = "admin";
/**
* 登錄密碼
*/
private String password = "admin";
/**
* 需要訪問的遠程目錄
*/
private String remoteDir = "/home/demo";
public FTPUpload() { }
public FTPUpload(String hostname, int port, String username, String password, String remoteDir){
this.hostname = hostname;
this.port = port;
this.username = username;
this.password = password;
this.remoteDir = remoteDir;
}
/**
* 連接FTP伺服器 並登錄
* @param hostName FTP伺服器hostname
* @param port FTP伺服器埠
* @param username FTP登錄賬號
* @param password FTP登錄密碼
*/
private FTPClient connectFTPServer() {
try {
//1.創建FTPClient對象
ftpClient = new FTPClient();
//2.連接FTP伺服器
// 如果採用默認埠，可以使用ftp.connect(url)的方式直接連接FTP伺服器
ftpClient.connect(hostname, port); //鏈接到ftp伺服器
// System.out.println("連接到ftp伺服器地址 --> ftp://" + hostName + ":" + port + " 成功..開始登錄");
//3.判斷連接ftp伺服器是否成功
int reply = ftpClient.getReplyCode();
// System.out.println("以2開頭的返回值就會為真：" + reply);
//以2開頭的返回值就會為真
if (!FTPReply.isPositiveCompletion(reply)) {
ftpClient.disconnect();
return null;
}
//4.登錄FTP伺服器.用戶名 密碼
ftpClient.login(username, password);
System.out.println("登錄成功." );
return ftpClient;
} catch (Exception e) {
e.printStackTrace();
ftpClient = null;
return ftpClient;
}
}
/**
* 向FTP伺服器上傳文件
* @param filePathName 上傳文件的全路徑名稱
* @return 成功返回true，否則返回false
*/
public boolean uploadFile(String filePathName) {
// 初始表示上傳失敗
boolean success = false;
try {
// 創建FTPClient對象
ftpClient = connectFTPServer();
//創建文件夾
boolean flag = ftpClient.makeDirectory(remoteDir);
if(flag) {
System.out.println("創建文件夾：" + remoteDir );
}
// 轉到指定上傳目錄
boolean flag0 = ftpClient.changeWorkingDirectory(remoteDir);
// 將上傳文件存儲到指定目錄
if(filePathName == null || filePathName.length() == 0){
return success;
}
String filename = filePathName.substring(filePathName.replace("\\", "/").lastIndexOf("/") + 1, filePathName.length());
InputStream input = new FileInputStream(new File(filePathName));
// ftpClient.setBufferSize(1024);
// ftpClient.setControlEncoding("GBK");
// ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);//設置文件類型
boolean flag1 = ftpClient.storeFile(filename, input);
System.out.println("轉到指定上傳目錄：" + flag0 + " 將上傳文件存儲到指定目錄：" + flag1);
input.close(); // 關閉輸入流
ftpClient.logout(); // 退出ftp
success = true; // 表示上傳成功
} catch (Exception e) {
e.printStackTrace();
} finally {
if (ftpClient.isConnected()) {
try {
ftpClient.disconnect();
} catch (IOException ioe) {
}
}
}
return success;
}
/**
* 從FTP伺服器指定目錄下載文件 到本地目錄中 OK
* @param fileName 要下載的文件名
* @param localPath 下載後保存到本地的路徑
* @param showlist 下載時是否顯示列表 ( true 顯示 )
* @return
*/
public boolean downFile(String fileName, String localPath, boolean showlist) {
// 初始表示下載失敗
boolean success = false;
if(fileName == null || fileName.length() == 0 || localPath == null || localPath.length() == 0){
return success;
}
try {
File file = new File(localPath);
if(!file.isDirectory()){
file.mkdir();
}
// 創建FTPClient對象
ftpClient = connectFTPServer();
// 轉到指定下載目錄
boolean flag = ftpClient.changeWorkingDirectory(remoteDir);
if(!flag) {
System.out.println("目錄：" + remoteDir +"不存在!");
return success;
}
// 列出該目錄下所有文件
FTPFile[] remoteFiles = ftpClient.listFiles();
// 遍歷所有文件，找到指定的文件
if(showlist){
System.out.println("目錄" + remoteDir + "下的文件:");
}
for (FTPFile ftpFile : remoteFiles) {
String name = ftpFile.getName();
if(showlist){
long length = ftpFile.getSize();
String readableLength = FileUtils.byteCountToDisplaySize(length);
System.out.println(name + ":\t\t" + readableLength);
}
if (name.equals(fileName)) {
// 根據絕對路徑初始化文件
File localFile = new File(localPath + "/" + name);
// 輸出流
OutputStream is = new FileOutputStream(localFile);
// 下載文件
ftpClient.retrieveFile(name, is);
is.close();
}
}
// 退出ftp
ftpClient.logout();
// 下載成功
success = true;
} catch (IOException e) {
e.printStackTrace();
} finally {
if (ftpClient.isConnected()) {
try {
ftpClient.disconnect();
} catch (IOException ioe) {
}
}
}
return success;
}
/**
* 顯示FTP伺服器指定文件夾中的文件及大小 OK
* @return
*/
private boolean showFileList() {
// 初始表示失敗
boolean success = false;
try {
ftpClient = connectFTPServer();
FTPFile[] remoteFiles = null;
// 轉到指定下載目錄
boolean flag = ftpClient.changeWorkingDirectory(remoteDir);
if(!flag) {
System.out.println("目錄：" + remoteDir +"不存在!");
return success;
} else{
remoteFiles = ftpClient.listFiles(remoteDir);
System.out.println("目錄" + remoteDir + "下的文件:");
}
if(remoteFiles != null) {
for(int i=0;i < remoteFiles.length; i++){
String name = remoteFiles[i].getName();
long length = remoteFiles[i].getSize();
String readableLength = FileUtils.byteCountToDisplaySize(length);
System.out.println(name + ":\t\t" + readableLength);
}
}
// 表示成功
success = true;
} catch (Exception e) {
e.printStackTrace();
} finally {
//使用IO包關閉流
IOUtils.closeQuietly(outSteam);
try {
ftpClient.disconnect();
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
return success;
}
public static void main(String[] args) {
FTPUpload ftp = new FTPUpload();
ftp.uploadFile("c:////test////bgssp.jar");
}
}
F. jsp如何將圖片上傳到伺服器某個文件夾裡面，而路徑存到資料庫中！！請教！！！
用smartupload 控制項來完成 你網路下一大堆的例子，算了我幫你網路，不然你分不給我，要記的給我呀，至於保存在資料庫中，你可以用年月日時分秒這樣的格式生成一個文件存放目錄，將圖片的路徑保存到資料庫中
<%@ page language="java" contentType="text/html; charset=GB2312" pageEncoding="GB2312"%>
<%@ page language="java" import="java.io.*"%>
<%@ page language="java" import="com.jspsmart.upload.*"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB2312">
<title>文件上傳Bean</title>
</head>
<body>
<jsp:useBean id="mySmartUpload" scope="page" class="com.jspsmart.upload.SmartUpload" />
<FORM METHOD="POST" ACTION="Ex7_7.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>
<INPUT TYPE="SUBMIT" VALUE="Upload">
</FORM>
<%
//上傳文件計數
int count=0;
//初始化，傳入pageContext內置變數
mySmartUpload.initialize(pageContext);
//允許上傳的文件類型
mySmartUpload.setAllowedFilesList("htm,html,txt,jar,");
//或者設定拒絕上傳的文件類型
// mySmartUpload.setDeniedFilesList("exe,bat,jsp");
// 拒絕的物理路徑
// mySmartUpload.setDenyPhysicalPath(true);
// 設置文件最大為 50000 bytes
mySmartUpload.setMaxFileSize(50000);
// 允許一次最多上載文件大小不超過 200000 bytes
// mySmartUpload.setTotalMaxFileSize(200000);
try {
// 上傳操作
mySmartUpload.upload();
//以原文件名存儲在web伺服器虛擬路徑下
//返回上傳的文件數
count = mySmartUpload.save("/Upload", mySmartUpload.SAVE_VIRTUAL);
} catch (Exception e){
//輸出意外信息
out.println("<b>Wrong selection : </b>" + e.toString());
}
// 顯示文件上載數
out.println(count + " file(s) uploaded.");
%>
</body>
</html>