注册功能

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<%@ page language="Java" import="java.sql.*" %>
<jsp:useBean id="RegisterBean" scope="page" class="opendb.opendb" />
<%
String   name1=request.getParameter("username");
String name2=request.getParameter("name");
String password=request.getParameter("password");
String e_mail=request.getParameter("email");
String education=request.getParameter("education");
String sex=request.getParameter("sex");
String resume=request.getParameter("resume");
if ((name1==null)||(password==null)){
%>
<p>用户名和密码不能为空！</p>
<input type="button" value="返回修改" onclick="history.back()">
<%
}
else
{
String sql="select * form userinfo where username='" +   name1   + "'";
Resultset rs= RegiseterBean.executeQuery(sql);
if(rs.next()){rs.close();
session.putValue("register_message","duplicate name found!");
%>
<script language=JavaScript>
window.location="info.jsp?str=用户<%=name1%>已经存在"
</script>
<%
}
else
{ rs.close();
%>
<center>
<form method=post action="register2.jsp">
<input type="hidden" name="username" value="<% =name1   %>">
<input type="hidden" name="password" value="<% =password %>">
<input type="hidden" name="name" value="<% =name2 %>">
<input type="hidden" name="email" value="<% =e_mail %>">
<input type="hidden" name="education" value="<% =education %>">
<input type="hidden" name="sex" value="<% =sex %>">
<input type="hidden" name="resume" value="<% =resume %>">
请确认您的注册信息<br><br>
<table width="60%" border="1">
<tr>
<td>登录名：</td><td><% =name1   %></td>
</tr>
<tr>
<td>密码：</td><td><% =password %></td>
</tr>
<tr>
<td>真实姓名：</td><td><% =name2 %></td>
</tr>
<tr>
<td>性别：</td><td><% =sex %></td>
</tr>
<tr>
<td>简历</td><td><% =resume %></td>
</tr>
<tr>
<td>EMAIL：</td><td><% =e_mail %></td>
</tr>
<tr>
<td>学历：</td><td><% =education %></td>
</tr>
</table>
<br>
<input type="submit" value="提交">   
<input type="button" value="返回修改" onclick="history.back()">
</form>
<% } %>
</center>
<% } %>