jsp登录页面的简单实例 雏形
%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
html>
head>
meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
title>欢迎页面/title>
/head>
body>
%
session.invalidate();//销毁session
%>
a href="denglu.jsp" >亲,请登录/a>
a href="zhuce.jsp">注册/a>
/body>
/html>
欢迎界面:
尚未注册,直接登录的时候:
%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
html>
head>
meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
title>登录/title>
/head>
body>
form action="test_denglu.jsp" method="post">
table width="300" height="300" border="0" align="center">
tr height="80" align="center">
td colspan="2">font size="24">OO登录/font>/td>/tr>
tr height="30">
td width="80" align="right">用户名:/td>
td>input type="text" name="username">/td>/tr>
tr height="30">
td width="80" align="right"> 密nbsp;nbsp;码:/td>
td> input type="password" name="password">/td>/tr>
tr>td height="40" align="center" colspan="2">
input type="submit" value="登录">
/td>/tr>
/table>
/form>
/body>
/html>
进入注册界面:
%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
html>
head>
meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
title>注册/title>
/head>
body>
form action="test_zhuce.jsp" method="post">
table width="300" height="300" border="0" align="center">
tr height="80" align="center">
td colspan="2">font size="24">OO注册/font>/td>/tr>
tr height="30">
td width="80" align="right">用户名:/td>
td>input type="text" name="username">/td>/tr>
tr height="30">
td width="80" align="right"> 密nbsp;nbsp;码:/td>
td> input type="password" name="password">/td>/tr>
tr>td height="40" align="center" colspan="2">
input type="submit" value="提交">
/td>/tr>
/table>
/form>
/body>
/html>
注册成功,跳转登录界面:
%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" import="java.sql.*"%>
!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
html>
head>
meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
title>检测跳转中/title>
/head>
body>
%
String name = new String(request.getParameter("username").getBytes("ISO-8859-1"),"UTF-8");
String pw = request.getParameter("password");
String str = "select * from USERS WHERE username = '" + name + "'";
String str1 = "insert into users values(xuhao.nextval,'" + name + "','" + pw +"')";
try{
//连接数据库
Connection conn = null;
Class.forName("oracle.jdbc.driver.OracleDriver");
String strURL = "jdbc:oracle:thin:@localhost:1521:SP";
conn = DriverManager.getConnection(strURL, "test", "123");
System.out.println("数据库连接成功");
Statement st = conn.createStatement();
ResultSet rs = st.executeQuery(str);
if(rs.next()){
if(name.equals(rs.getString(2))){
out.println("对不起,用户名已使用。");
out.println("br>建议使用用户名:" + name +"99");
response.setHeader("refresh", "5;URL=zhuce.jsp");
}
}else{
int a = st.executeUpdate(str1);
if(a == 1){
out.println("恭喜你,注册成功");
session.setAttribute("username", name);
response.setHeader("refresh", "3;URL=denglu.jsp");
}
}
rs.close();
st.close();
conn.close();
}catch(Exception e){
e.printStackTrace();
}
%>
br>br>
/body>
/html>
登录时,密码出错:5秒后重新登录
账号密码输入正确,进入主页面:
%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
html>
head>
meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
title>主页面/title>
/head>
body>
主页面
%
Object obj = session.getAttribute("username");
if(obj != null){
String str = obj.toString();
out.println(str + "登陆成功");
}else{
out.println("登录超时,请重新登录");
response.setHeader("refresh", "5;URL=denglu.jsp");
}
%>
br>
a href="yemian.jsp">退出账号/a>
/body>
/html>
以上就是小编为大家带来的jsp登录页面的简单实例 雏形全部内容了,希望大家多多支持脚本之家~
您可能感兴趣的文章:- jQuery Ajax 实现在html页面实时显示用户登录状态
- Ajax Session失效跳转登录页面的方法
- 登录超时给出提示跳到登录页面(ajax、导入、导出)
- 一款经典的ajax登录页面 后台asp.net
- 基于JS设计12306登录页面
- 原生js验证简洁注册登录页面
- JS实现登录页面记住密码和enter键登录方法推荐
- 防止登录页面出现在frame中js代码
- JBuilder2005实战JSP之登录页面实现代码[图]
- ajax编写简单的登录页面