jsp实现登陆界面代码（jsp简单登录界面代码）
更新：2022-11-10 07:26
本文目录一览：
jsp 登陆界面的代码
登录判断的页面代码：
<%@ 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("帐号密码输入错误");%>
<a href="index1.jsp">点击返回</a>
<%}%>
登录输入时的代码：
<form action="login.jsp" method="post" name="form1" class="STYLE1" id="form1">
帐号
<label>
<input name="name" type="text" id="name" tabindex="1" size="13" maxlength="13" />
</label>
<a href="regedit.jsp">注册</a>
密码
<label>
<input name="password" type="password" id="password" size="13" maxlength="13" />
</label>
<a href="forget.jsp">忘记</a>
<label>
<input type="submit" name="Submit" value="确定" />
</label>
<label>
<input type="reset" name="Submit2" value="重填" />
</label>
</form>
编写用户注册于登录的JSP页面的全部程序代码
3个jsp文件，第一个是login.jsp，第二个是judge.jsp，第三个是afterLogin.jsp。
login.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>登录页面</title>
</head>
<body>
<form name="loginForm" method="post" action="judgeUser.jsp">
<table>
<tr>
<td>用户名:<input type="text" name="userName" id="userName"/></td>
</tr>
<tr>
<td>密码:<input type="password" name="password" id="password"/></td>
</tr>
<tr>
<td>
<input type="submit" value="登录" style="background-color:pink" />
<input type="reset" value="重置" style="background-color:red"/>
</td>
</tr>
</table>
</form>
</body>
</html>
judge.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>身份验证</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>
afterLogin.jsp
<%@ page language="java" contentType="text/html; charset=GB18030" pageEncoding="GB18030"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>登录成功</title>
</head>
<body>
<%
request.setCharacterEncoding("GB18030");
String name = request.getParameter("userName");
out.println("欢迎你:" + name);
%>
</body>
</html>
求JSP登陆界面代码
给你提供一下思路吧：
- 输入界面：输入用户名和密码。
- 处理界面：获取提交过来的数据（用户名和密码），然后进行验证。然后填写正确时，跳转成功的界面；不正确时，跳转失败的界面。
- 创建成功界面与失败界面。
登录界面：
<%@ page language="java" pageEncoding="GBK"%>
<html>
<head><title>登录界面</title></head>
<body>
<div align="center">
<form action="validate.jsp" method="post">
用户名：<input type="text" name="myName"><br>
密码：<input type="password" name="myPass"><br>
<input type="submit" value="登录"/>
</form>
</div>
</body>
</html>
登录验证界面：
<%@ page language="java" pageEncoding="GBK"%>
<%
//处理中文乱码
request.setCharacterEncoding("GBK");
//获取提交的元素
String name = request.getParameter("myName");
String pass = request.getParameter("myPass");
//业务处理
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"%>
<html>
<head><title>成功界面</title></head>
<body>登录成功！</body>
</html>
jsp登陆界面源代码
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>登录页面</title>
</head>
<body>
<form name="loginForm" method="post" action="judgeUser.jsp">
<table>
<tr>
<td>用户名:<input type="text" name="userName" id="userName"/></td>
</tr>
<tr>
<td>密码:<input type="password" name="password" id="password"/></td>
</tr>
<tr>
<td>
<input type="submit" value="登录" 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>身份验证</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>
3、afterLogin.jsp文件
<%@ page language="java" contentType="text/html; charset=GB18030" pageEncoding="GB18030"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>登录成功</title>
</head>
<body>
<%
request.setCharacterEncoding("GB18030");
String name = request.getParameter("userName");
out.println("欢迎你:" + name);
%>
</body>
</html>
扩展资料：
java web登录界面源代码：
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();
if(result.next())
password=result.getString("password");
} catch(SQLException e) {
e.printStackTrace();
} finally {
close(preparedStatement);
close(result);
close(connection);
}
System.out.println("找到的数据库密码为："+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>验证用户密码</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('用户名不能为空');</script>");
response.setHeader("refresh", "0;url=user_login.jsp");
} else {
System.out.println("输入的用户名:"+username);
String passwordInDataBase=util.selectPassword(username);
System.out.println("密码："+passwordInDataBase);
if(passwordInDataBase==null||"".equals(passwordInDataBase)) {
out.print("<script language='javaScript'> alert('用户名不存在');</script>");
response.setHeader("refresh", "0;url=user_login.jsp");
} else if(passwordInDataBase.equals(password)) {
out.print("<script language='javaScript'> alert('登录成功');</script>");
response.setHeader("refresh", "0;url=loginSucces.jsp");
} else {
out.print("<script language='javaScript'> alert('密码错误');</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">
<title>Insert title here</title>
</head>
<body>
<hr size="10" width="26%" align="left" color="green">
<font size="6" color="red">登录成功</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>登录界面</title>
</head>
<body background="C:\Users\win8\workspace\Login\image\9dcbdc339e72a5663b5c289fb5573c13_10.jpg">
<center>
<br><br><br><br><br><br>
<h1 style="color:yellow">Login</h1>
<br>
<form name="loginForm" action="login_check.jsp" method="post">
<table Border="0">
<tr>
<td>账号</td>
<td><input type="text" name="username"/></td>
</tr>
<tr>
<td>密码</td>
<td><input type="password" name="password"></td>
</tr>
</table>
<br>
<input type="submit" value="登录" style="color:#BC8F8F">
</form>
</center>
</body>
</html>
jsp实现简单的登录界面
index.jsp是本页面：
<html>
<body>
<form action="manager.jsp" name="form1" method="post">
<input type="text" name="name">
<input type="password" name="password">
<input type="submit" value="登录" name="submit"> 管理
</form>
</body>
</html>
manager.jsp是要登录的页面：
<%
String name=request.getParameter("name");
String password=request.getParameter("password");
if(name.equals("cxh") && password.equals("11011")) {
%>
<jsp:forward page="manager.jsp" />
<%
} else {
%>
<jsp:forward page="index.jsp" />
<%
}
%>
这样才是提交嘛~~~你试试~
