@[JSP文件的简单上传与下载]
- 一、前期工具准备:eclipse(这里推荐eclipse,myeclipse也行,自己找了半天也找不到为什么无法使用组件的问题),tomcat,还有jspsmartupload组件的jar包。
没有组件可以去网上百度下载,或者加扣扣:1367844194问我要。 - 二、文件上传
1、upload.html
<!DOCTYPE html>
<html>
<head>
<title>文件上传</title>
<meta name="keywords" content="keyword1,keyword2,keyword3">
<meta name="description" content="this is my page">
<meta name="content-type" content="text/html; charset=GB2312">
</head>
<body>
<p align="center">上传产品信息</p>
<form method="post" action="do_upload.jsp" enctype="multipart/form-data">
<table width="90%" border="1" align="center">
<tr>
<td><div align="center">产品图片:
<input type="file" name="filel" size="30">
</div></td>
</tr>
<tr>
<td><div align="center">产品说明:
<input type="file" name="filel" size="30">
</div></td>
</tr>
<tr>
<td><div align="center">
<input type="submit" name="submit" value="上传">
</div></td>
</tr>
</table>
</form>
</body>
</html>
2、do_upload.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="java.util.*,com.jspsmart.upload.*" %>//导入上传文件所需组件的jar
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>文件上传处理页面</title>
<meta http-equiv="Content-Type" content="text/html;chatset=gb2312">
</head>
<body>
<%
SmartUpload su = new SmartUpload();//创建SmartUpload对象
su.initialize(pageContext);//初始化页面,pageContext是内置对象
//su.setMaxFileSize(10000);
//su.setTotalMaxFileSize(20000);
//su.setAllowedFilesList("doc,txt");
//su.setDeniedFilesList("exe,bat,jsp,htm,html,,");
su.upload();
int count = su.save("/upload",su.SAVE_VIRTUAL);
/*注意:upload是路径,此路径必须是tomcat中的文件路路径 如果没有要新建 ,新建在和web-inf同级文件夹中*/
out.println(count+"个文件上传成功!<br>");
for(int i=0;i<su.getFiles().getCount();i++)//遍历文件
{
com.jspsmart.upload.File file = su.getFiles().getFile(i);
if(file.isMissing()) continue;
out.println("<br>文件名:"+file.getFileName()+"长度:"+file.getSize());
}
%>
</body>
</html>
- 三、文件下载
1、download.html
<!DOCTYPE html>
<html>
<head>
<title>文件下载</title>
<http-equiv="content-type" content="text/html;charset=GB2312">
<meta name="keywords" content="keyword1,keyword2,keyword3">
<meta name="description" content="this is my page">
<meta name="content-type" content="text/html; charset=GB2312">
</head>
<body>
<p align="center">下载文件页面</p>
<form action="do_download.jsp" method="post" enctype="multipart/form-data">
<table width="75%" border="1" align="center">
<tr>
<td>
<div align="center">单击下载:
<a href="upload/shop.docx">电子商城使用说明书</a>
<input type="submit" name="download" value="下载">
</div>
</td>
</tr>
</table>
</form>
</body>
</html>
2、do_download.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="java.util.*,com.jspsmart.upload.*" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>文件下载处理页面</title>
<meta http-equiv="Content-Type" content="text/html;charset=GB2312">
</head>
<body>
<%
SmartUpload su = new SmartUpload();
su.initialize(pageContext);
su.setContentDisposition(null);
su.downloadFile("upload/shop.docx");
%>
</body>
</html>
代码重要核心都加了注释!还有不懂得可以加我扣扣:1367844194,一起交流。