用jsp选择了删除数据后，使数据不会出现在jsp页面和数据库中，也就是要更新数据，各位大侠该怎么做？谢谢！！
index.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="gb2312"%>
<html>
<body>
<div align="center"> <%
Connection con;
Statement sql;
ResultSet rs;
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
}
catch(ClassNotFoundException e){out.print("类找不到!");
out.print(e);
}
try{
con=DriverManager.getConnection("jdbc:sqlserver://localhost:1433;DatabaseName=user","sa","11011");
sql=con.createStatement();
rs=sql.executeQuery("select * from userTable");
int row=rs.getRow();
out.print(" <table border>");
out.print(" <tr> <td colspan=8 align=center>用户数据(共"+row+"条数据) </td> </tr>");
out.print(" <tr>");
out.print(" <td width=100>"+"用户id号");
out.print(" <td width=100>"+&
