简单的JSP登录程序
HTML登录界面
<html><head><title>登录</title></head><body bgcolor="#ffffff"><form action="chkLogin.jsp" method="POST"> <input type="text" name="user" /><br /> <input type="password" name="pass" /><br /> <input type="Submit" value="提交" /></form></body></html>检查登录
<%@ page contentType="text/html; charset=GBK" %><%@ page import="java.sql.*" %><html><head><title>chkLogin</title></head><body bgcolor="#ffffff"><% String user = request.getParameter("user"); String pass = request.getParameter("pass"); Connection con = null; PreparedStatement ps = null; ResultSet rs = null; try
{
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver"); con = DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;databasename=Test", "sa", ""); ps = con.prepareStatement("SELECT * FROM [User] WHERE UserName=? AND UserPwd =?"); ps.setString(1, user); ps.setString(2, pass); rs = ps.executeQuery(); if ( rs.next())
{
out.print("登录成功!");
} else { out.print("登录失败!"); }
}catch(Exception ex) { ex.printStackTrace(); }finally{ if ( null != rs) { rs.close(); rs = null; } if ( null != ps) { ps.close(); ps = null; } if ( null != con){ con.close(); con = null; } }%></body></html>