第二种:Oracle 9iAS的标签库和Bean提供的文件上载功能
Oracle developer suit 9i 中的Jdeveloper9031提供通过标签库上载文件的方法,下面的例子中in_file.jsp文件提供上载表单,up_file.jsp列出上载文件列表,dn_file.jsp文件为下载刚才上载的文件。该方法使用图形编辑器,简单可行,但不支持中文文件名,可实现客户端文件上载和下载。
如下为in_file.jsp的源程序:
<%@ taglib uri="http://XMLns.oracle.com/j2ee/jsp/tld/ojsp/fileAccess.tld"
prefix="fileaccess" %>
<%@ page language="Java" import="java.io.*" contentType="text/Html" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/HTML;charset=gb2312">
<title>jdbc upload and download blob</title>
</head>
<body>
<fileaccess:httpUploadForm
formsAction="up_file.jsp"
maxFiles="5" fileNameSize="100"
maxFileNameSize="150" submitButtonText="send">
</fileaccess:httpUploadForm>
</body> </html>
up_file.jsp的源程序:
<%@ taglib uri="http://xmlns.oracle.com/j2ee/jsp/tld/ojsp/sqltaglib.tld" prefix="database" %>
<%@ taglib uri="http://xmlns.oracle.com/j2ee/jsp/tld/ojsp/fileaccess.tld" prefix="fileaccess" %>
<%@ page language="java" contentType="text/html; charset=gb2312"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/HTML;charset=gb2312">
<title>jdbc upload and download blob</title>
</head>
<body>
<database:dbOpen user="zy" passWord="zy"
URL="jdbc:oracle:thin:@db92:1521:cf92" commitOnClose="true">
<fileaccess:httpUpload
destination="zy_blob"
destinationType="database"
table="blob_table">
</fileaccess:httpUpload>
</database:dbOpen>
Done!
<a href="http://oracle.chinaitlab.com/eXPloiture/dn_file.jsp">下载!</a>
</body></html>
dn_file.jsp的源程序:
<%@ taglib uri="http://xmlns.oracle.com/j2ee/jsp/tld/ojsp/fileaccess.tld" prefix="fileaccess" %>
<%@ taglib uri="http://xmlns.oracle.com/j2ee/jsp/tld/ojsp/sqltaglib.tld" prefix="database" %>
<%@ page contentType="text/html;charset=GBK"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GBK">
</head>
<body>
<database:dbOpen user="zy" password="zy"
URL="jdbc:oracle:thin:@db92:1521:cf92">
<fileaccess:httpDownload source="*" servletPath="/"
sourceType="database" table="blob_table">
</fileaccess:httpDownload>
</database:dbOpen>
Download done!
</body>
</html>