jsp實現登陸界面代碼（jsp簡單登錄界面代碼）

本文目錄一覽：

• 1、jsp 登陸界面的代碼
• 2、編寫用戶註冊於登錄的JSP頁面的全部程序代碼
• 3、求JSP登陸界面代碼
• 4、jsp登陸界面源代碼
• 5、jsp實現簡單的登錄界面

jsp 登陸界面的代碼

登錄判斷的頁面代碼

%@ page contentType=”text/html; charset=gb2312″%

%@ page import=”java.sql.*”%

%@ page import=”java.util.*”%

%@ include file=”conn.jsp”%

%request.setCharacterEncoding(“gb2312”);

Statement stat=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);

String name=request.getParameter(“name”);

String password=request.getParameter(“password”);

ResultSet rs=stat.executeQuery(“select * from sjb where name='”+name+”‘and pass='”+password+”‘”);

%

%if(rs.next()){%

%String shenfen=rs.getString(6);

session.setAttribute(“name”,name);

response.sendRedirect(“index1.jsp”);

}else{

out.print(“帳號密碼輸入錯誤”);%

a href=”index1.jsp”點擊返回/a

%}%

登錄輸入時的代碼

form action=”login.jsp” method=”post” name=”form1″ class=”STYLE1″ id=”form1″

帳號

label

input name=”name” type=”text” id=”name” tabindex=”1″ size=”13″ maxlength=”13″ /

/label

A href=”regedit.jsp”註冊/A

密碼

label

input name=”password” type=”password” id=”password” size=”13″ maxlength=”13″ /

/label

a href=”forget.jsp”忘記/a

label

input type=”submit” name=”Submit” value=”確定” /

/label

label

input type=”reset” name=”Submit2″ value=”重填” /

/label

/form

編寫用戶註冊於登錄的JSP頁面的全部程序代碼

3個jsp文件，第一個是login.jsp,第二個是judge.jsp,第三個是afterLogin.jsp

%@ page language=”java” contentType=”text/html; charset=GB18030″

pageEncoding=”GB18030″%

%@ page import=”java.util.*” %

!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN”

html

head

title登錄頁面/title

/head

body

form name=”loginForm” method=”post” action=”judgeUser.jsp”

table

tr

td用戶名:input type=”text” name=”userName” id=”userName”/td

/tr

tr

td密碼:input type=”password” name=”password” id=”password”/td

/tr

tr

tdinput type=”submit” value=”登錄” style=”background-color:pink” input type=”reset” value=”重置” style=”background-color:red”/td

/tr

/table

/form

/body

/html

%@ page language=”java” contentType=”text/html; charset=GB18030″

pageEncoding=”GB18030″%

%@ page import=”java.util.*” %

!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN”

html

head

title身份驗證/title

/head

body

%

request.setCharacterEncoding(“GB18030”);

String name = request.getParameter(“userName”);

String password = request.getParameter(“password”);

if(name.equals(“abc”) password.equals(“123”)) {

%

jsp:forward page=”afterLogin.jsp”

jsp:param name=”userName” value=”%=name%”/

/jsp:forward

%

}

else {

%

jsp:forward page=”login.jsp”/

%

}

%

/body

/html

%@ page language=”java” contentType=”text/html; charset=GB18030″

pageEncoding=”GB18030″%

!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN”

html

head

title登錄成功/title

/head

body

%

request.setCharacterEncoding(“GB18030”);

String name = request.getParameter(“userName”);

out.println(“歡迎你:” + name);

%

/body

/html

求JSP登陸界面代碼

給你提供一下思路吧。1.輸入界面：輸入用戶名和密碼。2.處理界面：獲取提交過來的數據（用戶名和密碼），然後進行驗證。 然後填寫正確時，跳轉成功的界面；不正確時，跳轉失敗的界面。3.創建成功界面與失敗界面。你看這樣能理解嗎？ 追問： 可以理解，但是我不會寫代碼。 回答： 那我給你先寫一個簡單的把。等會啊。 補充： 登錄界面：%@ page language=”java” pageEncoding=”GBK”%htmlheadtitle登錄界面/title/headbodydiv align=”center”form action=”validate.jsp” method=”post”用戶名：input type=”text” name=”myName”br密碼：input type=”password” name=”myPass”brinput type=”submit” value=”登錄”/form/div/body/html登錄驗證界面：%@ page language=”java” pageEncoding=”GBK”%%//處理中文亂碼request.setCharacterEncoding(“GBK”);//獲取提交的元素String pass=request.getParameter(“myPass”);//業務處理if(“admin”.equals(name) “admin”.equals(pass)){response.sendRedirect(“yes.jsp”);}else{response.sendRedirect(“no.jsp”);}%成功界面：%@ page language=”java” pageEncoding=”GBK”%htmlheadtitle成功界面/title/headbody登錄成功！/body/html

jsp登陸界面源代碼

1、login.jsp文件

%@ page language=”java” contentType=”text/html; charset=GB18030″

pageEncoding=”GB18030″%

%@ page import=”java.util.*” %

!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN”

html

head

title登錄頁面/title

/head

body

form name=”loginForm” method=”post” action=”judgeUser.jsp”

table

tr

td用戶名:input type=”text” name=”userName” id=”userName”/td

/tr

tr

td密碼:input type=”password” name=”password” id=”password”/td

/tr

tr

tdinput type=”submit” value=”登錄” style=”background-color:pink” input

type=”reset” value=”重置” style=”background-color:red”/td

/tr

/table

/form

/body

/html

2、judge.jsp文件

%@ page language=”java” contentType=”text/html; charset=GB18030″

pageEncoding=”GB18030″%

%@ page import=”java.util.*” %

!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN”

html

head

title身份驗證/title

/head

body

%

request.setCharacterEncoding(“GB18030”);

String name = request.getParameter(“userName”);

String password = request.getParameter(“password”);

if(name.equals(“abc”) password.equals(“123”)) {

3、afterLogin.jsp文件

%

jsp:forward page=”afterLogin.jsp”

jsp:param name=”userName” value=”%=name%”/

/jsp:forward

%

}

else {

%

jsp:forward page=”login.jsp”/

%

}

%

/body

/html

%@ page language=”java” contentType=”text/html; charset=GB18030″

pageEncoding=”GB18030″%

!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN”

html

head

title登錄成功/title

/head

body

%

request.setCharacterEncoding(“GB18030”);

String name = request.getParameter(“userName”);

out.println(“歡迎你:” + name);

%

/body

/html

擴展資料：

java web登錄界面源代碼：

1、Data_uil.java文件

import java.sql.*;

public class Data_uil

{

public  Connection getConnection()

{

try{

Class.forName(“com.microsoft.sqlserver.jdbc.SQLServerDriver”);

}catch(ClassNotFoundException e)

{

e.printStackTrace();

}

String user=”***”;

String password=”***”;

String url=”jdbc:sqlserver://127.0.0.1:1433;DatabaseName=***”;

Connection con=null;

try{

con=DriverManager.getConnection(url,user,password);

}catch(SQLException e)

{

e.printStackTrace();

}

return con;

}

public  String selectPassword(String username)

{

Connection connection=getConnection();

String sql=”select *from login where username=?”;

PreparedStatement preparedStatement=null;

ResultSet result=null;

String password=null;

try{

preparedStatement=connection.prepareStatement(sql);

preparedStatement.setString(1,username);

result=preparedStatement.executeQuery();//可執行的     查詢

if(result.next())

password=result.getString(“password”);

}catch(SQLException e){

e.printStackTrace();

}finally

{

close(preparedStatement);

close(result);

close(connection);

}

System.out.println(“找到的數據庫密碼為：”+password);

return password; 

}

public  void close (Connection con)

{

try{

if(con!=null)

{

con.close();

}

}catch(SQLException e)

{

e.printStackTrace();

}

}

public  void close (PreparedStatement preparedStatement)

{

try{

if(preparedStatement!=null)

{

preparedStatement.close();

}

}catch(SQLException e)

{

e.printStackTrace();

}

}

public  void close(ResultSet resultSet)

{

try{

if(resultSet!=null)

{

resultSet.close();

}

}catch(SQLException e)

{

e.printStackTrace();

}

}

}

2、login_check.jsp:文件

%@ page language=”java” contentType=”text/html; charset=utf-8″

pageEncoding=”utf-8″%

!DOCTYPE html PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN” “”

html

head

meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″

title驗證用戶密碼/title

/head

body

jsp:useBean id=”util” class=”util.Data_uil” scope=”page” /

%

String username=(String)request.getParameter(“username”);

String password=(String)request.getParameter(“password”);

if(username==null||””.equals(username))

{

out.print(“script language=’javaScript’ alert(‘用戶名不能為空’);/script”);

response.setHeader(“refresh”, “0;url=user_login.jsp”);

}

else

{

System.out.println(“輸入的用戶名:”+username);

String passwordInDataBase=util.selectPassword(username);

System.out.println(“密碼：”+passwordInDataBase);

if(passwordInDataBase==null||””.equals(passwordInDataBase))

{

out.print(“script language=’javaScript’ alert(‘用戶名不存在’);/script”);

response.setHeader(“refresh”, “0;url=user_login.jsp”);

}

else if(passwordInDataBase.equals(password))

{

out.print(“script language=’javaScript’ alert(‘登錄成功’);/script”);

response.setHeader(“refresh”, “0;url=loginSucces.jsp”);

}

else

{

out.print(“script language=’javaScript’ alert(‘密碼錯誤’);/script”);

response.setHeader(“refresh”, “0;url=user_login.jsp”);

}

}

%

/body

/html

3、loginSucces.jsp文件

%@ page language=”java” contentType=”text/html; charset=utf-8″

pageEncoding=”utf-8″%

!DOCTYPE html PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN” “”

html

head

meta http-equiv=”Content-Type” content=”text/html; charset=ISO-8859-1″

titleInsert title here/title

/head

body

hr size=”10″ width=”26%” align=”left” color=”green”

font size=”6″ color=”red” 登錄成功 /font

hr size=”10″ width=”26%” align=”left” color=”green”

/body

/html

4、user_login.jsp文件

%@ page language=”java” contentType=”text/html; charset=utf-8″

pageEncoding=”utf-8″%

!DOCTYPE html PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN” “”

html

head

meta http-equiv=”Content-Type” content=”text/html; charset=ISO-8859-1″

title登錄界面/title

/head

body  background=”C:\Users\win8\workspace\Login\image\9dcbdc339e72a5663b5c289fb5573c13_10.jpg”

center

brbrbrbrbrbr

h1 style=”color:yellow”Login/h1

br

form name=”loginForm” action=”login_check.jsp” method=”post” 

table Border=”0″

tr

td賬號/td

tdinput type=”text” name=”username”/td

/tr

tr

td密碼/td

tdinput type=”password” name=”password”

/td

/tr

/table

br

input type=”submit” value=”登錄” style=”color:#BC8F8F”

/form

/center

/body

/html

jsp實現簡單的登錄界面

index.jsp是本頁面：

html

body

form action=manager.jsp name=form1 method=post

input type=”text” name=name input type=”password” name=password

input type=”submit” value=”登錄” name=”submit” 管理

/body

managet.jsp是要登錄的頁面：

%String name=request.getParameter(“name”);

String password=request.getParameter(“password”);

if(name==”cxh” password==”11011″)

{

%

jsp:forward page=”manager.jsp” /

%

}

else{ %

jsp:forward page=”index.jsp” /

%}

%

這樣才是提交嘛~~~你試試~