Servlets :: Setting Httponly Programmatically In Cookies Doesn't Seem To Work
Nov 5, 2014
I am using servlet 2.4 I used the ff. code below to set httponly in my application's cookies but it did not work. When I do a javascrip alert (document. cooke) in my page, the session id still shows up.
Cookie [] cookies = request.getCookies();
for(int x=0; x<cookies.length; x++){
Cookie cookie = (Cookie) cookies[x];
String cookieValue = cookie.getValue();
cookie.setValue(cookieValue + "; HttpOnly");
}
I also tried doing this and it wouldn't work too
String sessionid = request.getSession().getId();
response.setHeader("SET-COOKIE", "JSESSIONID=" + sessionid + "; HttpOnly");
by the way I am using an application server with its JAVA EE version = 1.4 and JAVA SE version = 5
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Dec 9, 2014
I have a stylesheet (mystylesheet.css) with following entry:
.flowpane{
-fx-background-color: rgb(0,0,0);
}
In then start-method of my application I execute:
StackPane root = new FlowPane();
Scene scene = new Scene(root,primaryScreenBounds.getWidth(),primaryScreenBounds.getHeight());
scene.getStylesheets().add(css.getFile());
root.applyCss();
No FlowPane gets black. But if I do that in SceneBuilder and add the stylesheet to root than after loading Fxml-file the FlowPane gets black.
Another approach:
StackPane root = new FlowPane();
Scene scene = new Scene(root,primaryScreenBounds.getWidth(),primaryScreenBounds.getHeight());
scene.getStylesheets().add(css.getFile());
root.getStyleSheets().add(css.getFile());
root.applyCss();
Nothing happens.
StackPane root = new FlowPane();
Scene scene = new Scene(root,primaryScreenBounds.getWidth(),primaryScreenBounds.getHeight());
scene.getStylesheets().add(css.getFile());
root.getStyleSheets().add(css.getFile());
root.getStyleClass().add("flowpanel");
root.applyCss();
Doesn't work too;
but root.setStyle("-fx-background-color: rgb(0,0,0) works. But I need to style my application by css-files.
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Mar 26, 2015
As below i m creating cookie .
Cookie myCookie = new Cookie("myck", value);
myCookie.setSecure(true);
response.addCookie(myCookie);
I am trying to read that cookie in javascript as below.
var cookieValue = $.cookie("myck");
I can see the cookie in the browser. However the read is not happening I tried to set httponly to false
myCookie.setHttpOnly(false);
However it is throwing compilation error as my servlet version is 2.5
Is there any way to get the cookie in javascript?
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Mar 4, 2014
I'm experimenting the basic concepts of Servlet technology with my below simple setup.
I have a welcome.jsp defined under webContent in eclipse and my welcome.jsp looks like
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1" [b]session="false"[/b]%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
[Code] ....
Now I have few questions based on the above setup
1) As you see session="false" in jsp, and when I used scriptlet like <%= request.getSession(false) %>, I see "null" being printed but if I use pageContext.request.session.id, the session is not null. How does session = "false" influences scriptlets and implicit objects and why the behavior is different
2) If session really exists, even when session=false is used, when I disabled cookies in FireFox browser and click on "click Me" hyperlink, the control goes to Controller, but in the servlet, I see 'No Session Created" being displayed. Which means session was not created and probably because I used false is getSession(false). But if I enable cookies, with the same setup, I get Session ID = << some value>> being printed and this is same as the session what printed through pageContext.request.session.id in the jsp.
So when cookies disabled, how can pageContext.request.session.id actually printed session id , but not in servlet and when cookies enabled, the same session id is displayed in both cases.
My question is why there is no impact in jsp, when cookies are disabled.
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Mar 19, 2015
I am trying to use three cookies in a servlet to store the background and foreground color and text size but my code is not working for some reason. When I run the servlet I get an IndexOutOfBounds exception and in my code is says my cookies are not ever used, when they should be to store the variables?
package httpServlets;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Date;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
[code]....
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Feb 18, 2014
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class frmSearch extends JDialog
{
Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
JPanel jpnlMain = new JPanel();
[Code] ....
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Sep 9, 2014
import com.googlecode.javacpp.Loader;
import com.googlecode.javacv.*;
import com.googlecode.javacv.cpp.*;
import com.googlecode.javacv.cpp.opencv_core.CvMemStorage;
import com.googlecode.javacv.cpp.opencv_core.CvPoint;
import com.googlecode.javacv.cpp.opencv_core.CvScalar;
import com.googlecode.javacv.cpp.opencv_core.CvSeq;
import com.googlecode.javacv.cpp.opencv_core.IplImage;
import com.googlecode.javacv.cpp.opencv_highgui.CvCapture;
import com.googlecode.javacv.cpp.opencv_imgproc.CvMoments;
[code]....
Everything works in this except the part where drawing a convexhull and the convexitydefects around an object. Drawing circle around the COG works OK. I tried to draw them with these lines but no luck.
hullSeq = cvConvexHull2(bigContour, hullStorage, CV_COUNTER_CLOCKWISE, 0);
defects = cvConvexityDefects(bigContour, hullSeq, defectsStorage);
cvDrawContours(img1,defects , CvScalar.BLUE, CvScalar.BLUE, 1,0,0);
cvDrawContours(img1,hullSeq , CvScalar.BLUE, CvScalar.BLUE, 1,0,0);
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Apr 14, 2015
Why the keyTyped function isn't triggered, when i type a key?
Here is my code:
package main;
import java.awt.Component;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.ArrayList;
[Code] .....
I have noticed, that if i call setVisible(true) before i add the button, then it works, but the button is not displayed... How can i achieve that the button is displays AND the KeyListener works?
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Oct 10, 2014
int arabe = Integer.readLine(args[0]);
String romain= "";
The compilator says that it can't find symbol. The arrow is under the "".""
It worked before.
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Jun 10, 2015
I have java http client which sends periodically (every 30 sec; this code is run by heartbeat thread in the cycle) heartbeats:
private PostResponse post(String jSessionCookie, final String action, final String data, final int postTimeoutMs) throws IOException, SSYSException
{
final HttpURLConnection httpConn = openHttpUrlConnection(true, postTimeoutMs, jSessionCookie);
final OutputStream os = httpConn.getOutputStream();
try (final PrintWriter wr = new PrintWriter( DefaultProperty.isEnableSocketTraceGW ? new TracerOutputStream(os) : os ))
[Code] .....
On the server side there is Tomcat 8.0.21 + APR connector. Every time this heartbeat is sent I see in the Wireshark and EtherDetect that new TCP connection is opened (SYN-SYNACK packets) and after getting response from Tomcat connection is closed (FIN – FINACK packets). I was expecting that TCP connections will be reused but not closed.
Capture.png 182.0 K
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Feb 24, 2014
Java Code:
import java.io.*;
import java.util.Scanner;
public class asciiFile {
int height;
int width;
Scanner input;
char[][] poop;
public asciiFile(File f) throws FileNotFoundException{ //constructor
[code]...
The constructor is supposed to take an ASCII file, take the numbers in the file, and populate a 2D array with the numbers in the file.
For some reason, the for loop I use to populate the array works outside of the constructor. When I put it in one of the methods, it runs normally. However, when I keep it in the constructor, I get the following error:
Exception in thread "main" java.lang.NullPointerException
at asciiFile.<init>(asciiFile.java:16)
at main.main(main.java:6)
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Mar 2, 2014
There is a specific function I have added to a program I've been working with for a while which involves retrieving data from a website. Here is that code:
Java Code: public String getWebData(String urlString, String add) throws IOException{
String output = "";
try {
//+s being the token, for example if dictionary.com was being used
add = add.replace(" ", "+s");
urlString = urlString + add;
URL url = new URL(urlString);
InputStream inputStream = url.openStream();
[code]....
Anyway, when I run this program within Netbeans, it works perfectly. I have a backup of the project in eclipse as well, and I've copied all of the code over and tried running the same thing in Eclipse - exactly the same, it works perfectly. The problem is whether I compile the the code in Netbeans or Eclipse, the exported runnable jar for some reason has an issue with this one method. It doesn't crash, and it seems to be doing something, but it is by no means giving me the data from the website like it is supposed to.
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Oct 9, 2014
I have this code: [URL] .... It works on fiddle but on local it does not work. What should be the problem?
Fiddle:
$('#addnewline').on('click', function (e) {
e.preventDefault();
var $textarea = $('#thetext');
$textarea.val(function () {
return $(this).val().substring(0, this.selectionstart) + "<br>" + $(this).val().substring(this.selectionstart);
});
});
<button id="addnewline">New line</button>
<br />
<textarea rows="4" cols="50" id="thetext">Some text
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Oct 30, 2014
Below is my code
<%--
Document : closeAc
--%>
<%@page import="javax.swing.JOptionPane"%>
<%@page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" import="java.sql.*, java.util.Date;"%>
<%
try {
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
[code]....
All I'm trying to do is to search the data from the database and is doesn't show up!
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Oct 17, 2014
I'm trying to read a xml file and delete it's contents. I do this by reading the file,writing it to a temp and then overwriting the original with the temp by renaming it
//overwrite original xml file with new file
boolean successful = outputFile.renameTo(inputFile);
System.out.println("success");
It does say the value of the local variable is not used however. I've debugged to ensure it hits the code it always prints out the line after too.It just does not overwrite my original xml file with the temp one.
It's had votes on stack so I thought that would of been reputableStack - overwrite but the second one got voted as a good answer. But still I would like to know if my code can work or not.
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Nov 9, 2014
I have a JList<Object> in my code (it actually takes JLabels) called imageList, and I've given it a custom CellRenderer using the following code:
cellRenderer = new DefaultListCellRenderer() {
private static final long serialVersionUID = 1L;
@Override
public Component getListCellRendererComponent(JList<?> list,
Object value, int index, boolean isSelected,
boolean cellHasFocus) {
[Code] .....
However, when I click anywhere on the JList, nothing gets printed to the console, which suggests that the mousePressed() method isn't being invoked. I think it's a problem with the CellRenderer, because I have similar code elsewhere that works, the only difference being I don't use a custom CellRenderer.
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Jun 6, 2014
Scanner sc = new Scanner(System.in);
String input = sc.nextLine();
if (input == "next") {
System.out.print("good Job!");
}
else {
System.out.println("Why ?");
}
//If I type in next it prints out "Why ?" instead of "Good Job!" - Why though ?
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Jun 10, 2014
I have a web app that accepts requests. Once a request is sent, I want to create a thread that will sleep for several days if no user action is taken on the request to remind the user to do something. The problem is, how do I ensure the timer will pick up at the same place if the server is restarted? Would serializing the thread do that? I'm guessing no because I think you're just creating a new instance at start up. Just checking If there's anything built into Java to do this.
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Feb 11, 2014
Why I can't get an external style sheet work work when using JSP files? Putting a link in the doc head like I would for an HTML or PHP file does not work. The style sheet is in the exact same directory as the JSP files and I cannot get it to work. I think I have tried about everything that has been suggested on the web with no luck.
If I create an HTML doc in the same directory as the JSP files, and add the below line in the document head, it works fine. Doing the same thing with a JSP file does nothing.
<link rel="stylesheet" type="text/css" href="style.css">
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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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Jan 17, 2015
Okay I am new to web-programming in general and am confused about how sessions work-:
1) Are sessions stored only on the client computer ? If so then if cookies are disabled then if browsers only store the session how are they able to remember the exact JSESSIONID ? Also how does the server (like Tomcat) remember which JSESSIONID belongs to which user ? Where does it store that information ?
2) If the server also stores the session information then how fast does it become out of date ?
3) If a client has cookies disabled does the server maintain a key-value pair of the IP and the session-id, so that if the same client logs in then the same session-id will be appended ?
4) When does the web-container make the decision of using cookies or the encodeURL() method to embed the session info ?
I use Tomcat 8.0 for now.
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Apr 28, 2014
Why we need to use ServletContext attribute when we already have ServletContext parameters.Whats the difference between ServletContext Attributes and ServletContext parameters.
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Sep 15, 2014
I am trying to develop a app for facebook and other social networks using webview. When the app is closed all the cookies are removed and when it is relaunched we can't get use of cookies. I want to know how to store cookies permanently and use them when the browser is relaunched. And I also want to know how to save web history permanently.
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Apr 17, 2014
I'm having serious issues right now with a JTable inside a JScrollPane.i have some methods that returns different indexes (rows) that i select programatically in a JTable and the problem is that sometimes it goes beyond of what i can see, like, the row gets selected but the scrollbar won't follow up.
i've searched up in google and saw several different methods but those were extremely complex and for stuff i don't need.the simplest solution i found is this:
tInfo.setRowSelectionInterval(searchIndexes.get(currentIndex), searchIndexes.get(currentIndex));
tInfo.scrollRectToVisible(tInfo.getCellRect(currentIndex, 1, true));
but it just doesn't do anything.My table (tInfo) has only two columns so no horizontal bars, just vertical. What can i do to align the scrollbar with the currently selected row in my table? :C
Found a solution using scrollPane.getVerticalScrollBar().setValue();in another thread, i didn't even notice there were like 3 more threads about the same, just different kind of code used in each.
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Mar 24, 2015
I am developing application called java compiler... It takes java program as input and compiles and run it, gives output. but if input program has infinite loop then how can identify and stop process execution.
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Mar 3, 2006
I have a JScrollPane with a JTextArea. The JTextArea is loaded with 10 lines of data. I have two JCheckBox's. The first check box sets the scroll to 10. sp.getVerticalScrollBar().setValue(10); The second check box reloads (ta.setText(text)) the text and then sets the scroll to 10. Why does the second one not work? I have attached a simple program. It is probably easier for you to compile and run than for me to go into detail explaining further.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Tester extends JFrame {
private static final String text = "1
[Code] ......
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