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jsp登錄頁(yè)面的簡(jiǎn)單實(shí)例雛形

更新時(shí)間：2016年06月29日 10:20:27 投稿：jingxian

下面小編就為大家?guī)硪黄猨sp登錄頁(yè)面的簡(jiǎn)單實(shí)現(xiàn) 雛形。小編覺得挺不錯(cuò)的，現(xiàn)在就分享給大家，也給大家做個(gè)參考。一起跟隨小編過來看看吧

jsp登錄頁(yè)面的簡(jiǎn)單實(shí)例雛形

<%@ 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>歡迎頁(yè)面</title>
</head>
<body>
<%
session.invalidate();//銷毀session

%>

<a href="denglu.jsp" >親，請(qǐng)登錄</a>
<a href="zhuce.jsp">注冊(cè)</a>
</body>
</html>

歡迎界面：

www.fzitv.net

尚未注冊(cè)，直接登錄的時(shí)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>登錄</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登錄</font></td></tr>
  <tr height="30">
    <td width="80" align="right">用戶名：</td>             
    <td><input type="text" name="username"></td></tr>
  <tr height="30">
    <td width="80" align="right"> 密&nbsp;&nbsp;碼：</td>
    <td> <input type="password" name="password"></td></tr>
    <tr><td height="40" align="center" colspan="2">
    <input type="submit" value="登錄">
    </td></tr>
 </table>
</form>
</body>
</html>

www.fzitv.net

進(jìn)入注冊(cè)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>注冊(cè)</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注冊(cè)</font></td></tr>
  <tr height="30">
    <td width="80" align="right">用戶名：</td>             
    <td><input type="text" name="username"></td></tr>
  <tr height="30">
    <td width="80" align="right"> 密&nbsp;&nbsp;碼：</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>

www.fzitv.net

注冊(cè)成功，跳轉(zhuǎn)登錄界面：

<%@ 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>檢測(cè)跳轉(zhuǎn)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{
  
   //連接數(shù)據(jù)庫(kù)
   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("數(shù)據(jù)庫(kù)連接成功");
   Statement st = conn.createStatement();
   ResultSet rs = st.executeQuery(str);
   if(rs.next()){
     if(name.equals(rs.getString(2))){
       out.println("對(duì)不起，用戶名已使用。");
       out.println("<br>建議使用用戶名：" + name +"99"); 
       response.setHeader("refresh", "5;URL=zhuce.jsp");
     }
   }else{
     int a = st.executeUpdate(str1);
     if(a == 1){
       out.println("恭喜你，注冊(cè)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>

www.fzitv.net

登錄時(shí)，密碼出錯(cuò)：5秒后重新登錄

www.fzitv.net

賬號(hào)密碼輸入正確，進(jìn)入主頁(yè)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>主頁(yè)面</title>
</head>
<body>
主頁(yè)面
<%
Object obj = session.getAttribute("username");
if(obj != null){
  String str = obj.toString();
  out.println(str + "登陸成功");
}else{
  out.println("登錄超時(shí)，請(qǐng)重新登錄"); 
  response.setHeader("refresh", "5;URL=denglu.jsp");
}
%>
<br>

<a href="yemian.jsp">退出賬號(hào)</a>

</body>
</html>

www.fzitv.net