Servlets :: Tomcat Basic Authentication
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?
View Replies
ADVERTISEMENT
Mar 15, 2015
I am trying to make a simple login using netbeans, derby database included in netbeans and tomcat server. I made everything nice and separated: I have a model package with a class called DbConnector that has the following method:
public Connection connect() {
try {
return DriverManager.getConnection(url, user, pass);
} catch (SQLException ex) {
return null;
}
}
Then i have another class, an userDAODB that has a password check method:
public boolean checkPassword(String user, String password) {
try (Connection con = new DbConnector().connect(); Statement stmt = con.createStatement()) {
//checks the password in the database
In the main method of this class i tested everything, it works very nice, logs me in, other methods work too, no problem what so ever.But then i go to my servlet:
public class LoginTest extends HttpServlet {
public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
String username = request.getParameter("username");
String pass = request.getParameter("pass");
UserDAODB userDAO = new UserDAODB();
boolean authe = userDAO.checkPassword(username, pass);
[code]....
So when i start the webpage and i try to click on the login button I get a NullPointerException com.model. UserDAODB. check Password (User DAODB. java:14) - so line 2 here
I have been googling a bit, i placed the derby.jar and the derbyclient.jar in the lib directory of tomcat, i tried to modify the context.xml of my application, but then it wouldn't even start anymore.
View Replies
View Related
Jul 13, 2014
i was i a program for Execute JSP Page.Inside Tomcat Conf Server File i add following path:
<Context path = "JSPTEST"
docBase="D:Tomcat 8.0webappsJSPTEST">
</Context>
</Host>
</Engine>
</Service>
</Server>
and this is my Jsp page program:
<html>
<head>
<title>Hello World Example in Jsp</title>
</head>
<body>
<h1>
[code]....
but same error is repeting:The request resourse is not available.
View Replies
View Related
Oct 8, 2014
We have a website used for downloading large files as large as 6gb and sometimes larger. We have all files in FTP server. The websit is JSP/Servlet /Tomcat combination. Below is code sample. I need a solution to increase the download speed. I understand it is bound to network bandwidth but are the steps that we need to take while we have such large files.I read about multipart downloads,gunzip streaming.
//first connect to FTP server and login and keep connection
Calendar cal=Calendar.getInstance();
startTime=cal.getTime();
fis=ftp.downloadFile(ftpclient,separator+resourceID);
response.setContentType("application/*");
response.setHeader("Content-Disposition", "attachment; filename="" + downloadFileName + "";");
byte[] bytes = new byte[1024];
[code]....
View Replies
View Related
Jun 3, 2014
I have a simple application ( only 2 JSPs files and one servlet the main components the whole webapp directory is attached ), I am using security constraint to redirect the user to HTTPS instead of HTTP when he submit from first page to the second page.
The problem is when the user submit the first page I get the error HTTP Status 405 - HTTP method GET is not supported by this URL although I m using only POST.
I have traced the firefox browser using httpfox and the result was the first HTTP request was done using POST correctly but after redirect the browser send GET.
This problem appears with FireFOx and IE but doesnot appear with google chrome.
index.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="myTags" tagdir="/WEB-INF/tags" %>
<html>
<head>
<title>Welcome Page</title>
<link href="css/style.css" type = "text/css" rel="stylesheet" />
[Code] ......
View Replies
View Related
Feb 26, 2014
Below is my Servletclass code
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class MyFirstServlet extends HttpServlet {
[Code] .....
I have configured tomcat7 in my ecclipse ide...
View Replies
View Related
May 22, 2014
I'm trying to learn java by making a login page using java, servlet, javascript, html and mysql. I can login with username and password, I can get all the information from database in the edit page. However, when I edit and click on "Submit" in EditPage.jsp, it gives HTTP Status 404. Same screen appears when I click on "Sign Up" from first page (NewFile.jsp) and click on "Submit" button after filling up user information.
I am posting all my code here but probably important ones are:
EditPage.jsp, Edit.java, EditDetails.java, UpdateUser.java and for Sign Up SignUpPage.jsp and Registration.java.
Firstly here are my error message and ss from my project explorer:
Here is my code:
LoginServlet.java
package com.amzi.servlets;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
[Code] ....
View Replies
View Related
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.
View Replies
View Related
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...
View Replies
View Related
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?
View Replies
View Related
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]...
View Replies
View Related
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.
View Replies
View Related
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] ....
View Replies
View Related
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...
View Replies
View Related
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.
View Replies
View Related
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]...
View Replies
View Related
Jul 31, 2014
I am using RAD and I copied the Tomcat server from server to local folder. Then I tried to add this tomcat by adding new server. I got the error in title. After searching, I copied the Tomcatconf files to myworkspaceserver omcat at localhost-config, restart RAD and refresh. But now I am getting the error that the conf may corrupted or incomplete.
View Replies
View Related
Feb 19, 2014
I am developing an dashboard application in Java, JSTL, MySql, Apache Tomcat 6.I have the below files
1. Dashboard.java (model)
2. DashboardDAO.java (dao)
3. DashboardController.java (Controller)
//Source
protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
String forward = "";
forward = LIST_DASHBOARD;
HttpSession session = req.getSession(true);
session.setAttribute("dboard", dao.getAlldashboard(req));
setMasterInfo(req);
RequestDispatcher view = req.getRequestDispatcher(forward);
view.forward(req, res);
[code]....
It works in the first time. But, after sometime the data is not retrieved and display empty screen. Once, i stop and start the server again, the data is getting retrieved again. But, later when we refresh the empty page is getting displayed again.
View Replies
View Related
Jan 31, 2014
Currently we are facing a problem in application developed in JSF, Hibernate on Tomcat server 7. The UI is getting freezed after uncertain time. Sometimes it worked for 2 to 5 hours and sometimes it hangs out within 10 mins, too.
Session time out in web.xml is -1
Before, we were getting memory leak logs in catalina, so we implemented ClassLoaderLeakPreventor in the application. When problem occurs, below log is printing in catalina.out.
INFO: Reloading context [/SHRWeb241213]
Jan 31, 2014 12:42:36 PM org.apache.catalina.core.StandardContext reload
INFO: Reloading Context with name [/SHRWeb241213] has started
ClassLoaderLeakPreventor: com.cosmos.leakPrevention.ClassLoaderLeakPreventor shutting down context by removing known leaks (CL: 0x19a37a)
ClassLoaderLeakPreventor: Removing 47 classes from Mojarra descriptors cache
[Code] ....
View Replies
View Related
Nov 25, 2014
I keep getting this error when compiling the code . I think its got to do with the Tomcat server not working well with the textpad app...I'm using windows 8.1(for the course I have to use Textpad 4.7.3 & Apache Tomcat 5.5.7 Server) :
C:UsersReignDownloadsIntec - Codecourse technology59850dChapter 12WorkWebStocks.java:20: package javax.servlet does not exist
import javax.servlet.*;
^
C:UsersReignDownloadsIntec - Codecourse technology59850dChapter 12WorkWebStocks.java:21: package javax.servlet.http does not exist
import javax.servlet.http.*;
[code]....
tom cat is running as a service it shows started in the tom cat app and as a running service in windows services !!!
View Replies
View Related
May 23, 2014
I'm creating a java-web project inside tomcat. (Tomcas starts a servlet that starts a counter application pased on GPIO states). In there is a web-interface that is showing the counter and some other informaition. On the web interface there is also a configuration form where the client can set some names/backupintervall/counterDelay etc...
Only i run tomcat on a port 8045. Setting up by the tomcat xml. But what i want is a second port threat that listen to a port (given by properties file like: webport-second=4302). That threat must show the same information that i get from tomcat port 8045. Like a redirection to that port but without browser redirect.
Is that possible and how must i do that?
View Replies
View Related
Feb 16, 2015
I have a NetBeans web project on Tomcat 8.0.15, MySql (with Jconnector), Servlet/Jsp. I need a secure login!!! There is a login page. On successful login, if it is admin, servlet redirects to the admin page, if username is of a standardUser, the servlet redirects to the main page.
For now nothing works. The page is not redirected by servlet, on submit button press the error.html appears and shows response.getStatus() is 0!!! I tested(without login) servlet for username/password check against the DB and it works.
So Here is my code files: login.jsp:
<form id="loginForm" method="POST" action="j_security_check">
<input name="j_username" id="j_username" type="email" value="test.admin@vividspectradc.ca"></input>
<input name="j_password" id="j_password" type="password" value="test"></input>
<input id="loginSubmit" type="submit" value="Login"></input></form>
[Code] .....
Is context.xml - realm needed? Why error.html appears and shows response.getStatus() is 0?
So, how to create a secure login? How j_security_check connects to my MySql database!? - maybe that' the problem error page shows after login...?
View Replies
View Related
Jun 30, 2013
Below is my first servlet program:
FirstServlet.java:
package edu.aspire;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
[Code] .....
web.xml:
<?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_2_5.xsd" id="WebApp_ID" version="2.5">
[Code] ....
Deployement:
To deploy my project into %TOMCAT_HOME%webapps folder.
Right click on Project ->Export-> War File
Project Name: Hello
Destination: D:Program FilesApache Software FoundationTomcat 6.0webappsHello.war
Result found in web browser:
HTTP Status 404 - /Hello/first
And Hello.war file is not found in webapps folder too after exporting as .war.
I am using Apache tomcat 6.0.37, eclipse 3.7.2 release, tomcat plugin :com.sysdeo.eclipse.tomcat_3.3.0
View Replies
View Related
Jul 2, 2014
my task is to add a few functions to an example calculator. I managed to add a divide button but I simply can't figure out how to add a working Pi and reciprocal function.
package newjavaproject;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class CalculateurNC extends Applet {
[code]....
View Replies
View Related
Oct 20, 2014
Why I am getting errors for this program I (tried) to write. I am new to java.
import java.util.Scanner;
public class TheBarkingLot {
public static void main(String args[]) {
int n;
Scanner input = new Scanner(System.in);
System.out.println("How many large dogs are boarding today?");
[Code] ....
View Replies
View Related
Jan 24, 2015
im considered quite the "javanoob" as my account name states..The assignment is to basically take a number that is entered by a user, and based off what they type in, display a corresponding grade letter. For example, if they enter a number between 90-100, they should receive a response that they received an "A". Now, this is fairly simple using an if/else statement, but my professor wanted us to implement this, using a switch case to teach us the difference.
import java.util.*;
public class SwitchTest
{
public static void main(String[] args)
{
Scanner scan = new Scanner(System.in);
System.out.println("Please enter a number to find out what letter grade you have recieved");
[code]...
View Replies
View Related
