📄 login.jsp
字号:
<%@ page language="java" contentType="text/html; charset=gb2312" pageEncoding="gb2312"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<%@ page import="java.sql.DriverManager" %>
<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.PreparedStatement" %>
<%@ page import="java.sql.ResultSet" %>
<%@page import="TeaWeb.OracleHepler"%>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>天缘茗茶</title>
<LINK href="TeaWebCSS.css" type=text/css rel=stylesheet>
</head>
<body topmargin="0" leftmargin="0">
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td height="60" colspan="3"><%@ include file="head.jsp" %></td>
</tr>
<tr>
<td width="180" rowspan="2" align="right" valign="top"><%@ include file="left.jsp" %></td>
<td height="6" colspan="2" background="Images/TopLine.jpg"></td>
</tr>
<tr>
<td width="5" height="600" align="left" valign="top"><img src="Images/Corner.jpg" width="5" height="5" /></td>
<td width="100%" align="center" valign="top"><table width="80%" height="273" border="0" cellpadding="0" cellspacing="0">
<tr>
<td height="30" align="center" valign="middle">
<%
request.setCharacterEncoding("gb2312");
//用来设定request对象的编码格式
String Uid = request.getParameter("txtCode");
String Pwd = request.getParameter("txtPwd");
if ((Uid == null) || (Pwd == null))
{
//当帐号或密码对象为空，说明无登陆请求，则显示用户登陆的窗口
%>
<form id="form1" name="form1" method="post" action="Login.jsp">
<table width="80%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td height="30" colspan="3" align="center" valign="middle">系统登陆</td>
</tr>
<tr>
<td height="1" colspan="3" align="center" valign="middle" background="Images/DOTLINEH.GIF"></td>
</tr>
<tr>
<td width="29%" height="30" align="right" valign="middle"><img src="Images/ReuBtnImg.jpg" width="9" height="10" /></td>
<td width="10%" align="right" valign="middle">帐号：</td>
<td width="61%" align="left" valign="middle"><input name="txtCode" type="text" id="txtCode" /></td>
</tr>
<tr>
<td height="1" colspan="3" align="center" valign="middle" background="Images/DOTLINEH.GIF"></td>
</tr>
<tr>
<td width="29%" height="30" align="right" valign="middle"><img src="Images/ReuBtnImg.jpg" width="9" height="10" /></td>
<td width="10%" align="right" valign="middle">密码：</td>
<td width="61%" align="left" valign="middle"><input name="txtPwd" type="text" id="txtPwd" /></td>
</tr>
<tr>
<td height="1" colspan="3" align="center" valign="middle" background="Images/DOTLINEH.GIF"></td>
</tr>
<tr>
<td width="29%" height="30" align="right" valign="middle"> </td>
<td width="10%" align="center" valign="middle"> </td>
<td width="61%" align="center" valign="middle"> </td>
</tr>
<tr>
<td height="1" colspan="3" align="center" valign="middle" background="Images/DOTLINEH.GIF"></td>
</tr>
<tr>
<td height="80" colspan="3" align="center" valign="middle"><input type="submit" name="Submit" value="提交" /></td>
</tr>
</table>
</form>
<%
}
else
{
try
{
//Class.forName("oracle.jdbc.driver.OracleDriver");
//Connection cn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:name","Scott","Tiger");
OracleHepler db = new OracleHepler();
Connection cn = db.getconnection();
//要记的提交,其实不用提交因为它关闭数据库时已提交
String sqlStr = "Select * from Users Where (Code = ?) And (UserPassword = ?)";
//老师的账号是编号而不是姓名
PreparedStatement pstmt = cn.prepareStatement(sqlStr);
pstmt.setString(1,Uid);
pstmt.setString(2,Pwd);
//得到两个值
ResultSet rs = pstmt.executeQuery();
//executeQuery()方法方法在运行完成之后，会返回一个ResultSet类型的对象，其中封装了代表查询结果的数据内容 ：
//Statement定义运行SQL指令所需的方法成员，如果运行的SQL是一种SELECT类型的指令
//ResultSet则封装Statement运行SQL指令之后所返回的数据内容，用户通过ResultSet取得SQL语句返回的数据内容
//利用方法next()将指针往下移动，返回多个值
if (rs.next())
{
session.setAttribute("IsLogin","yes");
//建立session变量
session.setAttribute("UserCode",rs.getString("Code"));
//建立session变量
session.setAttribute("UserName",rs.getString("Name"));
session.setAttribute("UserPassword",rs.getString("UserPassword"));
response.sendRedirect("Index.jsp");
// 定向网页的相对地址或绝对地址
}
else
{
out.println("帐号或密码错误！登陆失败");
}
}
catch(Exception e)
{
out.println("登陆失败，原因："+e.getMessage());
}
}
%>
</td>
</tr>
</table>
</td>
</tr>
</table>
</body>
</html>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -