登錄注冊的jsp代碼_編寫用戶注冊於登錄的JSP頁面的全部程序代碼

注冊代碼可能根據根據要求的不同而不同，但基本原理基本是一樣的，無非就是連接資料庫，字元驗證==，你也可以加入驗證碼==。

http://wenku..com/link?url=wJZlgce_-lIEyiuVtNsHVFgNg66mxJIMyuc6G

Ⅱ jsp登錄注冊代碼求解

form的name屬性不要用數字
簡單修改了下，你參考下，

<script type="text/javaScript">

</script>
</head>
<body> <form name="form">
用戶名<input name="r_user"></br>
密碼<input type="password" name="r_password"></br>
確認密碼<input type="password" name="rs_password"></br>
頭像<input type="file" name=r_pic></br>
<input type="submit" name="submit" value="提交" onclick="return Judge()">
<input type="reset" name="reset" value="取消 ">
</form>

</body>

Ⅲ 網站用戶注冊登錄和驗證的jsp代碼

yu7讓他也讓

Ⅳ JSP中用戶登錄代碼實現

暈，這個只要判斷一下就可以了嘛。
比如：
String username = request.getParameter("login");
String sql = "select * from 用戶表 where 用戶名='"+username+"'";
ResultSet rs = statment.executeQuery(sql);
if(rs.next()){
out.println("此用戶已經存在！請重新輸入");
}else{
//執行插入
}

Ⅳ 注冊頁面跳轉jsp代碼

很容易呢你用的什麼模式做的
用jsp的跳轉語句 if判斷

打個比方吧我用MVC模式
servlet做控制台 --c
javabean做模型 --m
jsp做視圖--v

在jsp中寫個form表單
<form action="loginservlet" method="POST" name="form1">
--寫你的代碼也就是你的那個圖片的代碼
</form>

然後一個javabean
用於處理數據

package homework.bean;
import java.sql.*;
import java.util.*;
public class UserManager {
DataBase db;
ResultSet rs=null;
public UserManager() {
db=new DataBase("homework","sa","");
}
public boolean studentLogin(String n,String pass){//學生登錄
boolean b=false;
try{
db.open();
ResultSet rs=db.select("select * from Student where name='"+n+"' and password='"+pass+"'");
if(rs.next()){
System.out.println("登錄成功!");
return true;
} else{
System.out.println("登錄失敗");
return b;
}
}catch(Exception e){
e.printStackTrace();
db.close();
}
return b;
}

}}

在是一個servlet 作控制器

package homework.servlet;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import homework.bean.*;
public class LoginServlet extends HttpServlet {
private static final String CONTENT_TYPE = "text/html; charset=GBK";
public void init() throws ServletException {
}
public void doPost(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
response.setContentType(CONTENT_TYPE);
HttpSession session = request.getSession();
String name = new String(request.getParameter("username").getBytes("ISO8859-1"), "GBK");
String password = request.getParameter("password").trim();
String s = (String) request.getParameter("type");
UserManager um = new UserManager();
try {
if (um.studentLogin(name, password)) {
session.setAttribute("username", name);
response.sendRedirect("studentIndex.html");//注意這里就是跳轉地方
} else {
response.sendRedirect("LoginFail.jsp");

} } catch (Exception e) {
e.printStackTrace();
}
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
doPost(request, response);
}

public void destroy() {
}
}

--應該可以看懂吧基本的流程就是這樣的不懂的網路HI

----------------------------------
我只是要你做個模型這個並不是完整的代碼知道不

Ⅵ 求一個用戶注冊+登錄的jsp代碼，要求如下：

protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
resp.setContentType("text/html;charset=utf-8");
req.setCharacterEncoding("utf-8");
String UserName = req.getParameter("userName");
String UserPassword = req.getParameter("passWord");
// String UserPower = null;
// 提交的密碼和User表中的密碼進行比較
BaseDao bd = new BaseDao();
User user = bd.login(UserName, UserPassword);
//判斷用戶名是否為空
if (null != user && !"".equals(user)) {
//創建session 並把用戶user寫入session中
HttpSession session = req.getSession(true);
session.setAttribute("user", user);
//跳頁面
req.getRequestDispatcher("admin_index.jsp").forward(req,
resp);
} else {
//把錯誤信息寫入err中如果登錄失敗則在JSP頁面顯示
req.setAttribute("err", "用戶名或密碼輸入錯誤!");
req.getRequestDispatcher("login.jsp").forward(req, resp);

}
}
這個是方法
登陸的頁面你寫的表單就好，再配置下 servlet就好

Ⅶ JSP編寫登錄注冊頁面

這個你可以在網上去找。很多的類似的代碼。或者去加類似的技術群或者交流群，在這上面是沒人幫你解決的。

Ⅷ 編寫用戶注冊於登錄的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>
<td><input 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>

Ⅸ 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>

</head>

<body>

<table>

<tr>

</tr>

<tr>

</tr>

<tr>

<td><input 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>

</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>

</head>

<body>

request.setCharacterEncoding("GB18030");

String name = request.getParameter("userName");

out.println("歡迎你:" + name);

</body>

</html>

(9)登錄注冊的jsp代碼擴展閱讀：

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("找到的資料庫密碼為："+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" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<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" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<title>Insert title here</title>

</head>

<body>

</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" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

</head>

<h1 style="color:yellow">Login</h1>

<br>

<tr >

</tr>

<tr>

</td>

</tr>

</table>

<br>

</form>

</center>

</body>

</html>

Ⅹ 求大神寫一下jsp的簡單的注冊界面代碼。

1.需要一個jsp頁面：
//login.jsp核心代碼：
<form action="${pageContext.request.contextPath}/servlet/UserServlet" method="post">
<input type="text" name="loginname" /><input type="password" name="password"/>
<input type="submit" value="登錄"/>
</form>
2.需要一個servlet來驗證登錄信息
//UserServlet 核心代碼
class UserServlet extends HttpServlet{
protected void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {
process(request, response);
}
protected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {
process(request, response);
}
private void process(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {
PrintWriter pw = response.getWriter();
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html");
String loginname = request.getParameter("loginname");
String password = request.getParameter("password");
//創建一個service來處理業務邏輯（包括查詢資料庫操作）
UserService service = new UserService();
boolean bool = service.validateUser(loginname,password);
if(!bool){
pw.println("用戶名或密碼錯誤");
}else{
pw.println("登錄成功");
}
}
3.需要一個service處理業務邏輯（包括查詢資料庫操作）
//UserService 核心代碼
public class UserService{
/**
*查詢資料庫驗證用戶是否存在，返回boolean
*/
public boolean validateUser(String loginname,String password){
boolean bool = false;
Connection conn = null;
PreparedStatement ps = null;
//這里以mysql為例
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "");
String sql = "select login_name,pass_word from t_user where login_name=? and pass_word=?";
ps = conn.prepareStatement(sql);
ps.setString(0, loginname);
ps.setString(1, password);
ResultSet rs = ps.executeQuery();
if(rs.next()){
bool = true;
}
} catch (Exception e) {
e.printStackTrace();
} finally{
try {
if(conn != null){
conn.close();
conn = null;
}
if(ps != null){
ps.close();
ps = null;
}
} catch (SQLException e) {
e.printStackTrace();
}
}
return bool;
}
}

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登錄注冊的jsp代碼

(9)登錄注冊的jsp代碼擴展閱讀：

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