📄 index.jsp
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<%@ page contentType="text/html; charset=UTF-8" language="java"%>
<%@ page import="javax.xml.parsers.*"%>
<%@ page import="java.io.*"%>
<%@ page import="java.util.*"%>
<%@ page import="org.jdom.*"%>
<%@ page import="org.jdom.output.*"%>
<%@ page import="org.jdom.input.*"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>欢迎光临网上商城</title>
<link rel=stylesheet type=text/css href="./lib/ware.css">
</head>
<body bgcolor="#F4FFFE">
<div align="center">
<br>
<H1>欢迎光临网上商城</H1>
<form name="form1" method="post" action="user_login.jsp" target="_self">
<table width="90%">
<tr>
<td width="50%" height="30" align="right">用户名：</td>
<td width="50%" height="30" align="left"> <input type="text" name="UserName"></td>
</tr>
<tr>
<td width="50%" height="30" align="right">密码：</td>
<td width="50%" height="30" align="left"> <input type="password" name="UserPassword"></td>
</tr>
<tr>
<td width="100%" height="40" align="center" colspan="2">
<input type="submit" name="sub" value="登录">
<input type="button" name="btn" value="用户注册" onClick="javascript:window.location='user_reg_form.html'">
</td>
</tr>
</table>
</form>
<% request.setCharacterEncoding("UTF-8");
int iCount = 0;
//获取XML文件的绝对路径
String sFilename = getServletConfig().getServletContext().getRealPath("counter.xml" );
//定义文件输入和输出流对象
FileInputStream fins = null;
FileOutputStream fouts = null;
try
{
//创建XML文件的输入流对象
fins = new FileInputStream(sFilename);
//为解吸XML文件创建JDOM对象
SAXBuilder SaxB = new SAXBuilder();
Document Doc = SaxB.build(fins);
//得到根元素
Element root = Doc.getRootElement();
//得到根元素所有子元素的集合
List l = root.getChildren("counter");
//获取第一个节点d对象
Element counter = (Element) l.get(0);
//获取“number”对应的元素
Element number = counter.getChild("number");
//获取“number”标签对应的值
String sCount = number.getText();
//将字符串值转换成整型值并加1
iCount = Integer.parseInt(sCount) + 1;
//设置“number”标签对应的值
number.setText(iCount+"");
//设置保存格式
Format format = Format.getPrettyFormat();
format.setIndent(" ");
format.setEncoding("UTF-8");
//将修改后的内容保存到文件中
XMLOutputter outp = new XMLOutputter(format);
fouts = new FileOutputStream(sFilename);
outp.output(Doc,fouts);
}
catch (Exception e)
{
out.println(e.toString());
}
finally
{
//关闭流对象
fins.close();
fouts.close();
}
%>
<p>您是本站的第 <font color="#FF0000"><%=iCount%></font> 位访问者</p>
</div>
</body>
</html>
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