使用jsp实现文件的上传

//处理上传页面(如:result.jsp)
 1 <%@ page language="java" pageEncoding="gbk" contentType="text/html; charset=gbk"%>
 2 <%@ page import="java.util.*"%>
 3 <%@ page import="java.io.*"%>
 4 <%@ page import="com.oreilly.servlet.multipart.*"%>
 5 <%@ page import="com.oreilly.servlet.MultipartRequest"%>
 6 <%
 7   //saveText:上传的文件存放的目标路径
 8   String saveText = "c:\\1010";
 9   //每个上传文件大小(3是每次最多上传的文件个数;20是每个文件大小;1024*1024是进制)
10   int maxSize = 3*20*1024*1024;
11   //上传文件:参数一是请求方式;参数二是存放目标路径;参数三是上传文件大小;参数四是简体中文
12   MultipartRequest multi = new MultipartRequest(request,saveText,maxSize,"gb2312");
13   //通过集合的枚举类型(Enumeration),打印
14   Enumeration files = multi.getParameterNames();  //由multi中,获得所有上传文件
15   while(files.hasMoreElements())
16   {
17     String files_name = (String)files.nextElement(); //由枚举类型变量files中,循环获得所有上传文件files_name
18     File f = multi.getFile(files_name);              //由所有上传文件files_name中,获得每个上传文件f
19     if(f!=null)
20     {
21       //获得每个上传文件的名称file_name
22       String file_name = multi.getFilesystemName(files_name);
23       String last_name = saveText+"\\"+file_name;
24       out.print("上传的文件是:"+last_name);
25       out.print("<hr>");
26     }
27   }
28 %>

使用jsp实现文件的上传文件;

 1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 2 <html>
 3 <head>
 4 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 5 <title>upload</title>
 6 </head>
 7 <body>
 8 <form name="uploadForm"  action="upload" method="post" enctype="MULTIPART/FORM-DATA">
 9     <table>
10         <tr>
11             <td><div align="right">Upload File:</div></td>
12             <td><input type="file" name="uploadfile" size="30"></td>
13         </tr>
14         <tr>
15             <td><input type="submit" name="submit" value = "upload"></td>
16         </tr>
17 
18     </table>
19 </form>
20 </body>
21 </html>
原文地址:https://www.cnblogs.com/wocn/p/jsp.html