在JSP中实现文件上传

最新推荐文章于 2024-06-19 14:49:55 发布

转载最新推荐文章于 2024-06-19 14:49:55 发布 · 924 阅读

文章标签：

#jsp #string #file #import #stylesheet #input

要求：在JSP中实现文件上传
前提：上传前，先加载上传文件所需的cos.jar包
//上传页面(如：index.jsp)

<%@ page language="java" import="java.util.*" pageEncoding="gbk" contentType="text/html; charset=gbk"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>"> 
    <title>在JSP中实现文件上传</title>   
 <meta http-equiv="pragma" content="no-cache">
 <meta http-equiv="cache-control" content="no-cache">
 <meta http-equiv="expires" content="0">   
 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
 <meta http-equiv="description" content="This is my page">
 <!--
 <link rel="stylesheet" type="text/css" href="styles.css">
 -->
  </head>
  <body>
  <form name="form1" enctype="multi/form-data" action="result.jsp"method="post">
  <p>
  <input type="file" name="file1">
  </p>
    <p>
  <input type="file" name="file2">
  </p>
    <p>
  <input type="file" name="file3">
  </p>
    <p>
  <input type="submit" name="submit" value="上传文件">
  </p>
  </form>
  </body>
</html>
//处理上传页面(如：result.jsp)
<%@ page language="java" pageEncoding="gbk" contentType="text/html; charset=gbk"%>
<%@ page import="java.util.*"%>
<%@ page import="java.io.*"%>
<%@ page import="com.oreilly.servlet.multipart.*"%>
<%@ page import="com.oreilly.servlet.MultipartRequest"%>
<%
  //saveText：上传的文件存放的目标路径
  String saveText = "c:\\1010";
  //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)
  int maxSize = 3*20*1024*1024;
  //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
  MultipartRequest multi = new MultipartRequest(request,saveText,maxSize,"gb2312");
  //通过集合的枚举类型(Enumeration)，打印
  Enumeration files = multi.getParameterNames();  //由multi中，获得所有上传文件
  while(files.hasMoreElements())
  {
    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
    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
    if(f!=null)
    {
      //获得每个上传文件的名称file_name
      String file_name = multi.getFilesystemName(files_name);
      String last_name = saveText+"\\"+file_name;
      out.print("上传的文件是："+last_name);
      out.print("<hr>");
    }
  }
%>