📄 login2.jsp.bak
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<%@page contentType="text/html;charset=GB2312"%>
<%@page import="java.io.*"%>
<%@page import="java.util.*"%>
<HTML>
<BODY BGCOLOR=cyan><FONT size=3>
<%! Hashtable hashtable=new Hashtable();
public synchronized void putString(String s)
{
hashtable.put(s,s);
}
%>
<% String person_name=request.getParameter("name"),name_found=null;
if(person_name==null)
person_name="";
byte c[]=person_name.getBytes("ISO-8859-1");
person_name=new String(c);
%>
<%-- 从文件中读散列表，如果文件不存在，你就是第一个访问本站的人，负责
写散列表到文件--%>
<% try
{
File f=new File("name.txt");
FileInputStream in=new FileInputStream(f);
ObjectInputStream object_in=new ObjectInputStream(in);
hashtable=(Hashtable)object_in.readObject();
object_in.close();
in.close();
name_found=(String)hashtable.get(person_name);
if(name_found==null)
{
String person_email=request.getParameter("address");
if(person_email==null)
person_email="";
StringTokenizer fenxi=new StringTokenizer(person_email," @");
int n=fenxi.countTokens();
if(n>=3)
out.print("<BR>"+"您输入的e-mail有不合法字符");
else
{
putString(person_name);
try
{
FileOutputStream o=new FileOutputStream(f);
ObjectOutputStream object_out=new ObjectOutputStream(o);
object_out.writeObject(hashtable);
object_out.close();
o.close();
}catch(Exception eee)
{}
out.print("<BR>"+"您已经注册成功");
out.print("<BR>"+"您注册的名字是"+person_name);
}
}
else
out.print("<BR>"+"该名字已经存在，请您换个名字");
}catch(Exception e)
{
String person_email=request.getParameter("address");
if(person_email==null)
person_email="";
StringTokenizer fenxi=new StringTokenizer(person_email,"@");
int n=fenxi.countTokens();
if(n>=3)
out.print("<BR>"+"您输入的e-mail有不合法字符");
else
{
putString(person_name);
try
{
File f=new File("name.txt");
FileOutputStream o=new FileOutputStream(f);
ObjectOutputStream object_out=new ObjectOutputStream(o);
object_out.writeObject(hashtable);
object_out.close();
o.close();
}catch(Exception eee)
{}
out.print("<BR>"+"恭喜！您是第一个注册成功的人");
out.print("<BR>"+"您注册的名字是"+person_name);
}
}
%>
</FONT>
</BODY>
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