Login Authentication With Database
Apr 22, 2014
i have build an login form with which a user can login to see next form ,login form is working perfectly but whenever a user enters a wrong userid and clicks on login then nothing happens,i want that there a popup will be called and say wrong userid...
However when a user enters correct userid and wrong password then the popup is working but not when the user id itself wrong...
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Sep 3, 2014
how can i stop this loop(while (res.next() )
example: i hava a table conex wich i inser on it two columns name and password i fill it by
name : yosra password : lol
name : najeh password :mdr
i don't know when i fill jTextfield of password and name correctly for ewp i put yosra as name and password as lol the loop continue to the next row and i show the two message dialog on netbeans about correct acces and refused access and the frame of my chatroom is opened
private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
String pass=new String(this.pass.getPassword());
String nam=this.name.getText();
acceder(nam,pass);
[code]....
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Sep 3, 2014
I have a problem with my code i try to identify users by password and username but I cannot recognize only the last row in my table in database what can i do ....
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
try {
state=conn.createStatement();
res=state.executeQuery("select*from conex");
String pass=new String(this.pass.getPassword());
String name=this.name.getText();
[Code] .....
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May 27, 2014
[public class Login
{
private String username;
private String password;
private String login_time;
private String logout_time;
private String status;
private String late;
[Code]...
but i am getting an error as but i am getting an error as
java.lang.NoSuchMethodException: com.tribro.chandu.Login.post();
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Jun 6, 2014
So I'm trying to create a simple user database that I could eventually turn into a login system. I created a simple table on MySQL with a name and address for the sake of simplicity. I tried to create simple statement inside my main method that would connect to my MySQL server and when I run my program I get a ClassNotFoundException from "org.gjt.mm.mysql.Driver"..Here is what I have in my main method thus far:
public static void main(String args[]) {
try {
Class.forName("org.gjt.mm.mysql.Driver"); //Load the driver
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/data", "root", ""); //Connect
/*
conn.createStatement().execute("CREATE TABLE people (" + "id int(64) NOT NULL AUTO_INCREMENT," + "name varchar(255) NOT NULL," + "address varchar(255) NOT NULL," + "UNIQUE (id)," + "FULLTEXT(name, address))");
[code]....
I downloaded Connector/J in the the binary .zip form and extracted it to my C: drive and put the .jar file into my java directories lib folder. I also added the directory of the .jar file into my CLASSPATH and I still get the exception.
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Feb 25, 2014
I am making a messenger app using mobile nation, the authentication widget is blocked because im not premium. I have set a text box that says username and password then a login and register button, the register button opens a url to a register page on a xxamp server i have. I made the site with wordpress, so in the mysql database it has wp_users. So when they press the login button id like it to select the username and password entered and run the java script to send that information to the xampp server to authenticate.
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Mar 30, 2015
I moved some static html pages I was hosting from apache into tomcat. (no point in running two servers) This works as expected, but I'm having trouble with the authentication part. In apache the authentication was handled by htaccess. I tried various tutorials on the web about configuring basic authentication in tomcat using WEB-INF/web.xml in tomcat, but I'm not sure this approach applies to static html pages. Using basic authentication for static html in tomcat?
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Aug 1, 2014
I'm building a JavaEE 7 web app and I want to add user authentication. Although I haven't found a complete guide, via the resources I've gathered I think I'm quite close. I can't make it work though. In all honesty I don't understand ALL of the code yet, I'm using it though because it's supposed to work, it's from JavaEE 7 Recipes book.
I've created my database, set up the JDBC realm in GlassFish, added the persistence unit, created the entity classes, the backing bean, the ejb, called the EL expressions...
When I'm supposed to login it throws a "loginBean.username is unreachable" or something. I don't understand why, the inputText's value is supposed to go straight to the backing bean right?
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May 2, 2015
I'm trying to build a SSL mutual authenticating private server. I'm not sure what keystores, truststores, or certificates I need to accomplish this. I made keystores for both programs using:
keytool -genkey -keyalg RSA -alias selfsigned -keystore keystore.jks -storepass password -validity 360 -keysize 2048
The server starts up fine, but when I run the client they both give errors.
Server code:
System.setProperty("javax.net.ssl.keyStore", "CLA.jks");
System.setProperty("javax.net.ssl.keyStorePassword", "password");
SSLServerSocketFactory sslServerSocketfactory = (SSLServerSocketFactory)SSLServerSocketFactory.getDefault();
SSLServerSocket sslServerSocket = (SSLServerSocket)sslServerSocketfactory.createServerSocket(9090);
SSLSocket s = (SSLSocket)sslServerSocket.accept();
BufferedReader in =
new BufferedReader(new InputStreamReader(s.getInputStream()));
[code]...
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Apr 10, 2014
I am writing a Twitter app, and I am encountering an error whenever I attempt to find the user's name from a screen name. I get the following error:
04-10 21:43:57.402: W/System.err(9326): No authentication challenges found
Which means that somehow, I'm not logged in. However, I am able to post, get the timeline statuses and even get the User of each status. I simply cannot do this:
public String getUserFromScreenName(String screenName) throws TwitterException {
m_twitter.verifyCredentials();
return m_twitter.showUser(screenName).getName();
}
The m_twitter.verifyCredentials() PASSES, which means I am authenticated, and the following line somehow I am not.
My m_twitter is defined here:
public void authenticate(String token, String secret) {
m_accessToken = token;
m_accessSecret = secret;
ConfigurationBuilder cb = new ConfigurationBuilder();
cb.setOAuthConsumerKey(m_consumerKey)
[Code] .....
And as I said before, I can read/post/retweet and all that stuff both before AND after this call, but this one simply will not work.
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Feb 25, 2015
In spring there is a Custom Authentication Provider, my question is from a jsf login page how can I execute this provider ?
@Component
public class CustomAuthenticationProvider implements AuthenticationProvider {
@Autowired
private UserService userService;
@Override
public Authentication authenticate(Authentication authentication) throws AuthenticationException {
String username = authentication.getName();
String password = (String) authentication.getCredentials();
[Code] ....
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Aug 1, 2014
I've created my database, set up the JDBC realm in GlassFish, added the persistence unit, created the entity classes, the backing bean, the ejb, called the EL expressions...
When I'm supposed to login it throws a "loginBean.username is unreachable" or something. I don't understand why, the inputText's value is supposed to go straight to the backing bean right?
I know this is a very vague description but I can provide you with all the code you may want, it's simply I cannot think of anything to do right now since I'm not familiar with the methodology yet...
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Apr 25, 2014
For my job I would to develop a Java application which downloads some data from a webpage and then process them.
The problem is that I have to authenticate to a proxy server to connect to the internet. As I browsed on the net, there is a possible way for implementation.
Authenticator.setDefault(new Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password);
[Code] .....
Sometimes it works fine, but usually I get the following exception:
java.io.IOException: Unable to tunnel through proxy. Proxy returns "HTTP/1.1 407 Proxy Authentication Required"
at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:2083)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:183)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1511)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1439)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
I don't understand what's the problem and why it's not persistent.
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Jul 11, 2014
i am trying to access an https request on a server and authenticating it after passing on username and passwork. I have even set up the proxy of the employer to get the request back as a zipped folder.
I always get an error on: " InputStream reader = con.getInputStream();"
Can be a proxy setting issue too but I am not sure why it should be.
Is there a way to create a secure channel in java to connect to https or by any way the below code could be modified to connect it to the server?
Code is as below:
import java.net.*;
import java.net.Proxy.Type;
import java.io.*;
import javax.net.ssl.HttpsURLConnection;
import com.sun.org.apache.xerces.internal.impl.dv.util.Ba se64;
public class DownloadFile
{
[Code]...
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Jan 30, 2014
I have a secured Struts application in WebSphere that uses FORM j_security_check for authentication.There is also a Post Logon "filter" defined which runs some code after a login is processed.The extract from web.xml showing the login configuration and filter is as follows:
<login-config>
<auth-method>FORM</auth-method>
<realm-name>MyRealm</realm-name>
<form-login-config>
<form-login-page>/login.html</form-login-page>
<form-error-page>/error.html</form-error-page>
[code]....
If a user isn't logged into the application and they try to access one of the secured servlets, for example quotes.do, they are directed to the login page to enter their information.If they login successfully, they are then directed to quotes.do, rather than the default "welcome" page. Is there a setting in the web.xml or the post logon filter where I can force j_security_check to ALWAYS go to the default welcome page after a successful login?
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Mar 10, 2014
Today downloaded eclipse and for the database i installed MSSQL 2008 R2. I want to make a webpage where i started with the login credentials, how to make a webpage for the login credentials?
I need two boxes
ID:
Password:
[Submit Button]
how to make a webpage and how can i run locally should i install IIS?
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Mar 8, 2014
I have created a jsp page named Login.jsp, here's the followings code:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!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=ISO-8859-1">
<link type="text/css" rel="stylesheet" href="inc/style.css" >
[Code] ....
Is that the structure of my page is correct? I create a new folder below WebContent in my project, named "authentication" and i placed below home.jsp. This page will display, if the login and password is correct.
Also, i change some thing in web.xml of project :
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>authentication</display-name>
[Code] ...
When i enter "http://localhost:8080/Gestion_de_stock/authentication/home.jsp" many problem appears :
Firstly, the login page doesn't display with the style that i made in a css file "style.css"
Also, when i enter a correct login and password an error page display and a url i don't know where it comes from [URL] .....
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Jul 20, 2014
I have write a SSO class for Single Sign on But i am getting one issue i am using JSF2 for my web application...here is my SSO class :
public class ApplicationSSO implements SSO {
public String authenticateUser(RequestContext request) {
UmUsersList user = (UmUsersList) request.getSessionContext().getAttribute("USER");
return user.getUmulEmailId();
}
[Code] .....
As you can see i have write below line
JSFUtils.redirectPage("../login/Login.xhtml");
It mean if User null it will redirect to Login page but it is not working. How to solve the issue i am end up with
An error has occurred.
For detailed error information, please see the HTML source code, and contact the forum Administrator.
Error while executing SSO actions: java.lang.NullPointerException
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Mar 22, 2014
How to hold/cancel print job once it has already been put into the queue in windows with java code?
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Mar 25, 2014
Code for login page by java and how we can implement it.
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Jan 26, 2015
I've made a login system with a username and a password. The password is visible and I wanna hide it, how do I do that? Here is my code (have used swing);
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Password implements ActionListener {
private String Username = "hudhud";
private String Password = "fitness";
[Code] ......
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Aug 4, 2014
I am getting data from user and checking it with database (MS SQL ) if it fits it is switching to new window. In new window I need to use again my database so I need to add connecting data again. I would like to get them from login window. How to do that? I know theory but when I am writing code nothing works. Here is working code for login panel :
/*import java.awt.BorderLayout;
import javax.swing.*;
public class Login extends JFrame {
[Code].....
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Jun 10, 2014
i have this code to connect and login to a HTTPS website Now when i run it i get a 500 code error and if i print out the html of the website it says something went wrong. This is the website [URL]
And this is code
package main;
import java.io.BufferedReader;
import java.io.InputStreamReader;
[Code]....
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Jan 16, 2015
I have tried to login a website using HtmlUnit but it get an error.
try {
response.setContentType("text/html;charset=UTF-8");
String loginUrl = "h t t ps://www.fshare.vn";
int loginFormNum = 1;
String userName = "LoginForm[email]";
String password = "LoginForm[password]";
[Code] ....
Exception : [URL] ....
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Nov 13, 2014
I've been building out a course lab project over the last few weeks, and at the time (with what we knew), it made sense to use a session level ResourceBundle to facilitate translations.
In order to validate if there is a session level ResourceBundle, I have a filter running (checking if the bundle exists, creating one if not, etc...).
The problem I now have is the final step of the project (the part most recently taught), is to add Declarative Security.
Of course, when that happens the login.jsp is called and the Filter doesn't run. It's not a problem for most scenarios, except for someone who bookmarks a link inside the secure part of the site. Then, the ResourceBundle doesn't exist and the login.jsp content that should be translated is "".
Is there a way to indicate via the web.xml that a specific Filter should be allowed before the login.jsp is displayed?
I imagine JSTL:FMT is probably the best solution, but we don't cover that until after the lab is due. I have a (messy) short-term solution of creating a temporary ResourceBundle in the login.jsp via a scriplet if the session scope ResourceBundle is null, but I was wondering if I missed something with the web.xml.
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Mar 26, 2014
After confirmation to the login details I added new cookie having logging information and then dispatched this request to controller servlet where this cookie is checked if it is present then user is forwarded to a particular page. Otherwise is redirected to the sign in page. Now the problem is when we add cookies then it is added into "response" object and when we get cookies we get them from "request" object. So for the first time redirection to controller servlet "response" object would not have this cookie as it is not available in "request" object. But will be available for later requests.
My question is what is the way to get this cookie in the first request. Or is there any way to send refresh like response to the browser so that this cookie is added??
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