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0. Remove you're e-mail address - it's a big invite to the Vikings.
1. Have you tried some diagnostics? Put some logging into your code and find out where things are going Lady Gaga, then post a nice little snippet to show what's gone wrong with an explanation of what you tried.
2. ??
3. Profit.
Panic, Chaos, Destruction.
My work here is done.
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Sending an Email in Java (Servlet)
Prerequisites:
1. Java Mail API (mail.jar)
2. activation.jar
3. HTML Form (Optional)
4. Servlet or JSP (to send the email)
Steps:
1. Download and install JDK6U16
2. Download Apache Tomcat
3. Download Eclipse
4. In Eclipse, make sure to add the apache server first
5. Create a dynamic web project
6. Under the WEB-INF create a folder called lib and paste mail.jar and activation.jar
7. Create a jsp and call it index.jsp
8. Create a servlet and call it sendMail
9. Create a class called MyPasswordAuthenticator (will act as authentication or you can use the code inside the sendMail as you like)
10. Create two jsps (success and error)
11. Create a css file called style
index.jsp Code:
<html>
<head>
<title>Sending email</title>
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body>
<center>
<form action="sendMail" method="get">
<table>
<tr>
<td>From</td>
<td><input type="text" name="from"></td>
</tr>
<tr>
<tr>
<td>To</td>
<td><input type="text" name="to"></td>
</tr>
<tr>
<td>Subject</td>
<td><input type="text" name="subject"></td>
</tr>
<tr>
<td>Message</td>
<td><textarea cols="25" rows="8" name="message"></textarea></td>
</tr>
</table>
<br>
<input type="submit" value="submit">
</form>
</center>
</body>
</html>
style.css
* { font-size: 12px; font-family: Verdana }
input, textarea { border: 1px solid #ccc }
textarea { text-align:left}
table { margin-top: 10% }
.error { margin-top: 10%; border: 1px dotted #db1f1f; width: 250px }
.msg { margin-top: 10%; border: 1px dotted #ccc; width: 250px }
sendMail Servlet
import java.util.Properties;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.servlet.RequestDispatcher;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class sendMail extends HttpServlet
{
public void doGet(HttpServletRequest req, HttpServletResponse resp)
{
String username = "your gmail account";
String password = "your gmail password";
Properties props = new Properties();
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.starttls.enable", "true");
Session session = null;
if (username != null && password != null)
{
props.put("mail.smtp.auth", "true");
session = Session.getInstance(props, new MyPasswordAuthenticator(username, password));
}
else
{
session = Session.getDefaultInstance(props, null);
}
MimeMessage message = new MimeMessage(session);
try
{
message.setFrom(new InternetAddress(req.getParameter("from")));
InternetAddress[] address = InternetAddress.parse(req.getParameter("to"), false);
message.setRecipients(Message.RecipientType.TO, address);
message.setSubject(req.getParameter("subject"));
message.setText(req.getParameter("message"));
Transport.send(message);
RequestDispatcher d = req.getRequestDispatcher("success.jsp");
d.forward(req, resp);
}
catch (Exception e)
{
try
{
RequestDispatcher d = req.getRequestDispatcher("error.jsp");
d.forward(req, resp);
}
catch (Exception e2) {}
}
}
}
MyPasswordAuthenticator
import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;
class MyPasswordAuthenticator extends Authenticator
{
String user;
String pw;
public MyPasswordAuthenticator (String username, String password)
{
super();
this.user = username;
this.pw = password;
}
public PasswordAuthentication getPasswordAuthentication()
{
return new PasswordAuthentication(user, pw);
}
}
success.jsp
<html>
<head>
<title>Message</title>
</head>
<body>
<center>
<div class="msg">
<h2>Message</h2>
<p>
Email sent
</p>
</div>
</center>
</body>
</html>
error.jsp
<html>
<head>
<title>Error</title>
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body>
<center>
<div class="error">
<h2>Error</h2>
<p>
Message: <%= request.getAttribute("ErrorMessage") %>
</p>
</div>
</center>
</body>
</html>
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">
<display-name>SendingEmail</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<description></description>
<display-name>sendMail</display-name>
<servlet-name>sendMail</servlet-name>
<servlet-class>sendMail</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>sendMail</servlet-name>
<url-pattern>/sendMail</url-pattern>
</servlet-mapping>
</web-app>
Make sure to put your gmail username and password in sendMail servlet
Next run index.jsp
Good luck
modified on Tuesday, September 8, 2009 7:35 PM
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Thanks Member 4277480 for ur reply
SIR i deployed your coding in NET-BEANS.
The files like
index.jsp
error.jsp
success.jsp
style.css
MyPasswordAuthenticator.java
sendMail.java
was easily uploded into it but
in case of mail.jar & activation.jar
i downloaded the javamail-1.4.2 and jaf-1_1_1
rar files from sun.com and then there is a confusion on by which
name they are to be import to source library..
i gave the names javamail-1.4.2 and jaf-1_1_1 and give path to jar files....
i also provided the gmail account and password , but i am not able to send the mail.
would you please tell whether you were succeeded in doing it and help me out sir, it is very important for me.
please provide a bit more details
I need your helping hand
please help....
what i think that i haven't configured any smtp server.
Could you please tell what should i do for it...
i think i am missing this thing only
reply soon
modified on Friday, September 11, 2009 5:17 AM
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http://www.mediafire.com/download.php?yygnyhmd1dg
1. Download rar from above.
2. Open it using Eclipse (JDK6U16)
3. When you provide your account make sure its in the format email@gmail.com
All done.
To setup a personal smtp read this guide:
http://www.ehow.com/how_4489548_set-up-smtp-server-windows.html
Good Luck
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hello sir
the link you provide
http://www.mediafire.com/download.php?yygnyhmd1dg
is not working, the rar file is not available..
please look at it
also tell me that, the code you provided me is just sufficient to send message
or i need to configure a smtp server also..
because i am just running your code
please reply soon...
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well Member 4277480
i am trying your code but it still not sending them.
Tell me whether i have to configure some smtp settings
to the gmail account which i am using here.
also if possible please send some important screenshot
like when configuring tomcat server.
also tell me what is this program actually doing, is this sending the mails to any client by using my email address in FROM: option.
do i need to configure any port
Please help me this last time...
I am very close to successfully running it..
Please reply with screenshots
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hi
how to convert java swings application to java applet
please guide me
import java.awt.Component;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.text.DateFormatSymbols;
import java.util.Calendar;
import java.util.Locale;
import javax.swing.DefaultListCellRenderer;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import com.standbysoft.datepicker.JDatePicker;
public class GeneralDemo extends JPanel {
private JDatePicker datePicker;
public GeneralDemo() {
datePicker = new JDatePicker();
setLayout(new GridBagLayout());
add(datePicker, new GridBagConstraints(0, 7, 1, 1, 0.0, 0.0, GridBagConstraints.NORTH, GridBagConstraints.HORIZONTAL, new Insets(0, 5, 5, 5), 0, 0));
}
private static void createAndShowGUI() {
JFrame frame = new JFrame("GeneralDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GeneralDemo newContentPane = new GeneralDemo();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
//Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
have a nice day
bye
naga
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0. Wrap you code in <PRE> tags, it'll keep it flame-retardent.
1. What have you tried? You have to make an effort for anyone here to help, just asking for code won't be of any use.
Panic, Chaos, Destruction.
My work here is done.
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Applet Code
import java.applet.*;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import com.standbysoft.component.date.swing.JDatePicker;
public class GeneralDemo_2 extends Applet
{
private JDatePicker datePicker;
public void init()
{
datePicker = new JDatePicker();
setLayout(new GridBagLayout());
add(datePicker, new GridBagConstraints(0, 7, 1, 1, 0.0, 0.0, GridBagConstraints.NORTH, GridBagConstraints.HORIZONTAL, new Insets(0, 5, 5, 5), 0, 0));
}
}
HTML Code
<object
code="GeneralDemo_2.class"
type="application/x-java-applet"
archive="jdatepicker.jar"
height="300" width="450"
>
</object>
Make sure you have the jdatepicker.jar in the same location as your .class and html
Good Luck
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import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.http.HttpServlet;
import java.io.*;
public class DateExample extends HttpServlet{
public void doGet(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException {
res.setContentType("text/html");
PrintWriter pw=res.getWriter();
pw.println("<html><head><title>wELCOME TO sERVLET pROGRAMING</title></head>");
pw.println("<body>");
pw.println("Print date and time");
java.util.Date dat=new java.util.Date();
pw.println(dat);
pw.println("</body></html>");
System.out.println("Thnx 4 using this application");
}
}
<servlet>
<servlet-name>hai
<servlet-class>DateExample<
<servlet-mapping>
<servlet-name>hai
<url-pattern>/ServletSample
at the time of deployment iam getting error like this, tell me how to resolve this one.
The requested resource (/ServletSamples/DateExample) is not available.
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A 404 error indicates a WEB/HTML issue rather than a programming bug.
Take a look at your web servers logs. 404 indicates it couldn't find the resource (URI). Is your web.xml properly configured for the servlet?
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Make sure this is in your 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">
<display-name>Test_1.1</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<description></description>
<display-name>DateExample</display-name>
<servlet-name>DateExample</servlet-name>
<servlet-class>DateExample</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>DateExample</servlet-name>
<url-pattern>/DateExample</url-pattern>
</servlet-mapping>
</web-app>
Your code works fine
Good luck
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Hi All,
I am very new to this forum. And I have very little knowledge in java. I want to create one key logger application. Please suggest me which language is best whether java or c++. And I dont where to start and how to start. Please people you have any ideas share with me.
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Refering to sun.com[^] JAVA is running 4.5 billion PC's worldwide - why use anything else for a keylogger-virus?? 
You should start with a concept. A concept does make it easier. I'm pretty sure about that!
greets
Torsten
___________________________________________________________________
I never finish anyth...
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It's really like comparing apples and oranges but anyone will tell you to do it in C++. The advantages of C++ outweigh Java any day of the week; java is intepreted and slow. C++ is native and fast.
Yeah, the only reason I'm helping you us because of the sheer stupidity of your question, in fact it is indeed so stupid, I have absolutely no confidence in your ability to learn java, nevertheless C++.
Good luck at failing.
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It is possible to do it in both but it all comes down to your preference.
Since you posted in Java forum you can use this http://www.steelbrothers.ch/jusb/ Learn it by yourself (no support on this one due to the nature of your application)
Just in case you want to verify input and not log the keys. This is limited to your application.
Snippet
addKeyListener(new KeyAdapter()
{
public void keyTyped(KeyEvent e)
{
}
});
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Hi everyone,
I planned to do a project in Digital Signature.
I just know how to Digitally Sign a Static document.
Now, I need to know, how to sign a document that has a dynamic content.
Can anyone help me to know, how to sign a dynamic content document!
I jus need the steps for how to sign a dynamic document.
Regards,
Vivek
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I need to implement the solution for the dynamic content digital signature as in the paper below!
Just for reference.... http://www.isg.rhul.ac.uk/cjm/dcaods.pdf
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so you have your reference doc, what have you tried?
If this is an accademic project [aka homework] the security of the signature is not too important, it is just the concept.
If this is commercial, then go out and buy a solution - it will be secure and properly tested.
Panic, Chaos, Destruction.
My work here is done.
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Interesting project, so I believe the main issue is how to implement the aware application that replace the dynamic content from the document, the rest can be achieved easily including the security side notes.
Any one willing to suggest how to do the separation?
modified on Friday, September 4, 2009 10:46 PM
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The solution is to convert the given file into a byte array text file and then digitally sign it.
The code I used is as follows (I was lazy to do the output for the data,key,sig) but its easy to do.
import java.io.FileInputStream;
import java.io.InputStream;
import java.security.InvalidKeyException;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Signature;
import java.security.SignatureException;
import java.security.interfaces.DSAPrivateKey;
import java.security.interfaces.DSAPublicKey;
public class SigningDocument
{
public static void main(String[] args) throws Exception
{
InputStream in = new FileInputStream("dcaods.pdf");
int bytesRead=0;
int bytesToRead=1024;
byte[] input = new byte[bytesToRead];
while (bytesRead < bytesToRead)
{
int result = in.read(input, bytesRead, bytesToRead - bytesRead);
if (result == -1) break;
bytesRead += result;
}
KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA");
keyGen.initialize(1024);
KeyPair keypair = keyGen.genKeyPair();
DSAPrivateKey privateKey = (DSAPrivateKey)keypair.getPrivate();
DSAPublicKey publicKey = (DSAPublicKey)keypair.getPublic();
byte[] signature= createSignature(privateKey,input);
boolean v = verifySignature(publicKey,input,signature);
System.out.print(v);
}
public static byte[] createSignature(PrivateKey key, byte[] buffer)
{
try
{
Signature sig = Signature.getInstance(key.getAlgorithm());
sig.initSign(key);
sig.update(buffer, 0, buffer.length);
return sig.sign();
}
catch (SignatureException e) {}
catch (InvalidKeyException e) {}
catch (NoSuchAlgorithmException e) {}
return null;
}
public static boolean verifySignature(PublicKey key, byte[] buffer, byte[] signature)
{
try
{
Signature sig = Signature.getInstance(key.getAlgorithm());
sig.initVerify(key);
sig.update(buffer, 0, buffer.length);
return sig.verify(signature);
}
catch (SignatureException e) {}
catch (InvalidKeyException e) {}
catch (NoSuchAlgorithmException e) {}
return false;
}
}
What do you think guys?
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@Nagy Vilmos
I am doing this for my learning purpose only and not commercial.
@Member 4277480,
I can understand that you are converting a given file into a text file and digitally signing it.
But, again if the file is renamed the content will become dynamic. To get the true requirement
just have a look at http://www.unirc.it/firma/en/Buccafurri_ISSA_1008.pdf[^]
So, we need to remove the dynamic contents present in it or do some manipulations.
The thing is i cannot figure out how to remove the dynamic content or how to do some manipulations to make the content static.
Thanks in advance!!!
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