📄 digitalsrc.jsp
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<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%!
String digitalList = "";
String username = null;
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<jsp:useBean id="user" class="com.andrew.elements.SimpleUser" scope="application"/>
<%
//判断用户是否为合法用户，如果不是则跳转到出错页面
username = user.getUserName();
if (null == username|| "".equals(username)) {
response.sendRedirect("showErrorInfo.jsp");
} else {
String sessionFlag = (String)session.getAttribute(username);
if (null == sessionFlag || !"true".equals(sessionFlag)) {
response.sendRedirect("showErrorInfo.jsp");
}
}
%>
<jsp:useBean id="db" class="com.andrew.db.DB" scope="page"/>
<%
//对指定参数进行合法性验证
String type = request.getParameter("type");
String digitalType = request.getParameter("digitalType");
System.out.println(type);
System.out.println(digitalType);
if (null == digitalType || null == type) {
//非法进入下载页面，跳转到下载主页。
response.sendRedirect("showErrorInfo.jsp");
} else {
//与指定类型进行匹配，如果符合则以分页的形式列出资源。
digitalList = db.getDigitals(type, digitalType);
}
%>
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'software.jsp' starting page</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>
<center>
<table width="800" cellspacing="2" cellpadding="2">
<tr>
<td><table width="100%" cellspacing="2" cellpadding="2">
<tr>
<td><h1 align="center">文件下载列表</h1></td>
</tr>
<tr>
<td><hr></td>
</tr>
</table></td>
</tr>
<tr>
<td><table width="100%" cellspacing="2" cellpadding="2">
<tr>
<th>文件编号</th>
<th>文件类型</th>
<th>文件种类</th>
<th>文件名字</th>
<th>文件下载</th>
<th>文件大小</th>
</tr>
<%=digitalList %>
</table></td>
</tr>
</table>
</center>
</body>
</html>
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