在這里看到很多討論文件上傳的文章,覺得各有利敝,有些只限于上傳文件,而不能同時取得文本字段值,尤其是上傳多個文件比較少,現本人做這個上傳文件的類最多可支持上傳255個文件,同時可取得文本字段值,請各位高手指正.

文件上傳類:MoqUploadBean.java
package net.jspcn.tool;

import java.io.*;

import java.util.*;

import javax.servlet.*;

import javax.servlet.http.*;

/**

*

* Title: 文件上傳類

* Description: 既能對文件進行上傳,又能取得輸入框的值,最多可同時上傳255個文件

* Copyright: Copyright (c) 2002

* Company: Tekson

* @author 莫瓊

* @version 1.0

*/

public class UploadBean {

private String[] sourceFile = new String[255]; //源文件名

private String[] suffix = new String[255]; //文件后綴名

private String canSuffix = ".gif.jpg.jpeg.png"; //可上傳的文件后綴名

private String objectPath = "c:/"; //目標文件目錄

private String[] objectFileName = new String[255]; //目標文件名

private ServletInputStream sis = null; //輸入流

private String[] description = new String[255]; //描述狀態

private long size = 100 * 1024; //限制大小

private int count = 0; //已傳輸文件數目

private byte[] b = new byte[4096]; //字節流存放數組

private boolean successful = true;

private Hashtable fields = new Hashtable();

public UploadBean() {

}

//設置上傳文件的后綴名

public void setSuffix(String canSuffix) {

this.canSuffix = canSuffix;

}

//設置文件保存路徑

public void setObjectPath(String objectPath) {

this.objectPath = objectPath;

}

//設置文件保存路徑

public void setSize(long maxSize) {

this.size = maxSize;

}

//文件上傳處理程序

public void setSourceFile(HttpServletRequest request) throws IOException {

sis = request.getInputStream();

int a = 0;

int k = 0;

String s = "";

while ( (a = sis.readLine(b, 0, b.length)) != -1) {

s = new String(b, 0, a);

if ( (k = s.indexOf("filename=\"")) != -1) {

// 取得文件數據

s = s.substring(k + 10);

k = s.indexOf("\"");

s = s.substring(0, k);

sourceFile[count] = s;

k = s.lastIndexOf(".");

suffix[count] = s.substring(k + 1);

if (canTransfer(count)) {

transferFile(count);

}

++count;

} else if ( (k = s.indexOf("name=\"")) != -1) {

// 普通表單輸入元素，獲取輸入元素名字

String fieldName = s.substring(k+6, s.length()-3);

sis.readLine(b, 0, b.length);

StringBuffer fieldValue = new StringBuffer(b.length);

while ( (a = sis.readLine(b, 0, b.length)) != -1) {

s = new String(b, 0, a-2);

if ( (b[0] == 45) && (b[1] == 45) && (b[2] == 45) && (b[3] == 45) && (b[4] == 45)) {

break;

} else {

fieldValue.append(s);

}

}

fields.put(fieldName, fieldValue.toString());

}

if (!successful)

break;

}

}

//取得表單元素值

public String getFieldValue(String fieldName) {

if (fields == null fieldName == null) {

return null;

}

return (String) fields.get(fieldName);

}

//取得上傳文件數

public int getCount() {

return count;

}

//取得目標路徑

public String getObjectPath() {

return objectPath;

}

//取得源文件名

public String[] getSourceFile() {

return sourceFile;

}

//取得目標文件名

public String[] getObjectFileName() {

return objectFileName;

}

//取得上傳狀態描述

public String[] getDescription() {

return description;

}

//判斷上傳文件的類型

private boolean canTransfer(int i) {

suffix[i] = suffix[i].toLowerCase();

//這個是用來傳圖片的，各位可以把后綴名改掉或者不要這個條件

if (sourceFile[i].equals("") (!(canSuffix.indexOf("."+suffix[i])>=0))) {

description[i] = "ERR: File suffix is wrong.";

return false;

}

else {

return true;

}

}

//上傳文件轉換

private void transferFile(int i) {

String x = Long.toString(new java.util.Date().getTime());

try {

objectFileName[i] = x + "." + suffix[i];

FileOutputStream out = new FileOutputStream(objectPath + objectFileName[i]);

int a = 0;

int k = 0;

long hastransfered = 0; //標示已經傳輸的字節數

String s = "";

while ( (a = sis.readLine(b, 0, b.length)) != -1) {

s = new String(b, 0, a);

if ( (k = s.indexOf("Content-Type:")) != -1) {

break;

}

}

sis.readLine(b, 0, b.length);

while ( (a = sis.readLine(b, 0, b.length)) != -1) {

s = new String(b, 0, a);

if ( (b[0] == 45) && (b[1] == 45) && (b[2] == 45) && (b[3] == 45) && (b[4] == 45)) {

break;

}

out.write(b, 0, a);

hastransfered += a;

if (hastransfered >= size) {

description[count] = "ERR: The file " + sourceFile[count] +

" is too large to transfer. The whole process is interrupted.";

successful = false;

break;

}

}

if (successful) {

description[count] = "Right: The file " + sourceFile[count] +

" has been transfered successfully.";

}

out.close();

if (!successful) {

sis.close();

File tmp = new File(objectPath + objectFileName[count]);

tmp.delete();

}

}

catch (IOException ioe) {

description[i] = ioe.toString();

}

}

public static void main(String[] args) {

System.out.println("Test OK");

}

}


文件上傳調用:MoqUpload.jsp
〈%@ page contentType="text/html; charset=GB2312" %>

〈html>

〈head>

〈title>文件上載〈/title>

〈/head>

〈body>

〈form action="MoqUploadSubmit.jsp" enctype="MULTIPART/FORM-DATA" method="post">

作者姓名:〈input type="text" name="Author" />

〈br />

公司名稱:〈input type="text" name="Company" />

〈br />

文件描述:〈input type="text" name="Comment" />

〈br />

選擇文件1:〈input type="file" name="filename1" />

〈br />

選擇文件2:〈input type="file" name="filename2" />

〈br />

選擇文件3:〈input type="file" name="filename3" />

〈br />

選擇文件4:〈input type="file" name="filename4" />

〈br />

〈input type="submit" value="上載" />

〈/form>

〈/body>

〈/html>


文件上傳提交:MoqUploadSubmit.jsp
〈%@ page contentType="text/html;charset=gb2312"%>

〈jsp:useBean id="fileBean" scope="page" class="net.moq.www.MoqUploadBean" />

〈%

fileBean.setObjectPath("D:\\Temp\\");

fileBean.setSize(10000*1024);

fileBean.setSuffix(".gif.jpg.png.jpge.html.htm");

fileBean.setSourceFile(request);

String [] saSourceFile = fileBean.getSourceFile();

String [] saObjectFile = fileBean.getObjectFileName();

String [] saDescription = fileBean.getDescription();

int iCount = fileBean.getCount();

String sObjectPath = fileBean.getObjectPath();

for(int i=0;i〈iCount;i++) {

out.println("〈br>源始文件:");

out.println(saSourceFile[i]);

out.println("〈br>目標文件:");

out.println(sObjectPath+saObjectFile[i]);

out.println("〈br>上傳說明:");

out.println(saDescription[i]);

out.println("〈br>");

}

out.println("〈br>作者:" + fileBean.getFieldValue("Author"));

out.println("〈br>公司:" + fileBean.getFieldValue("Company"));

out.println("〈br>說明:" + fileBean.getFieldValue("Comment"));

%>