Ok, you can use sessions. Before redirection, use session.setAttribute("logout", true) . Then, into the login page you can place if(session.getAttribute( "logout" ).equals(true)){ ... } with the invalidation session code.
It's viable to use several panels (could be three) and use e.g. setLocation(130,10) to change the position of the panels. Setting a different background with setBackground(Color.white) and setSize(width,height) could help too in the positioning.
Remove the static modifiers in your Book class. Also you need to pass a new Book object on each iteration, e.g. mybooks.add(new Book(a_title, a_author,a_publisher, a_isbn)); if you have a constructor to initialize these variables.
In editData.jsp the textboxes appears before calling request.getParameter() for each variable. For that reason every textbox is empty. Try to move the block of get parameters above, next to variable declarations.
Go to the folder $JBOSS_HOME/server/default/conf/ and open jboss-service.xml into an editor. Where it says "org.jboss.web.WebService" go to the attribute Port. Delete the line "<value-factory bean="ServiceBindingManager" method="getIntBinding" parameter="jboss:service=WebService"/>" and put instead 8085, leaving in this way the line as:
<mbean code="org.jboss.web.WebService"
. . .
<attribute name="Port">
<!-- Get the port to use from ServiceBindingManager. -->
8085
</attribute>
. . .
</mbean>
Try to restart the application server. If the error appears again, you can leave the line as was before.
Use length() with strings. The library Apache Commons Lang provides isNumeric() to check strings. I'll give you an example, don't forget to download and add this external jar into your project:
import org.apache.commons.lang.StringUtils;
public class StringTest {
public static void main(String[] args) {
String s = "12345";
System.out.println(s.length());
if(StringUtils.isNumeric(s)) System.out.println("The string is numeric");;
}
}
Appears to be something related with encoding... There is missing two parenthesis at the end. Some array exceeded the length. I did correct indentation with Eclipse, looks better now.
That happens because before <% if (s != null && s.equals("Songs")) out.println("selected=\"selected\""); %> there is an extra > symbol, needs to be removed on each case.
<% String s = (String) request.getAttribute("subState"); %>
<option value=""><fmt:message key="help.text.choose"/></option>
<option value="Help" <% if (s.equals("Help")) out.println("selected=\"selected\""); %>><fmt:message key="help.text.help"/></option>
<option value="Other" <% if (s.equals("Other")) out.println("selected=\"selected\""); %>><fmt:message key="help.text.other"/></option>
Instead of using RequestDispatcher object in ContactServlet for the success page, redirect to the same contact form, send an attribute with request.setAttribute() , then finally in the contact form is practical to use a condition (check the attribute isn't null), to display the message.
To save the information of each field use request.setAttribute("emailState", email) and then out.println(request.getAttribute("emailState")) on the input value (contact form), very similar to the procedure to pass errors.
Well, we're validating if the message is null. It's possible to add more fields on that condition and an else clause to redirect to the form again. Also, would be nice to pass a request parameter to the jsp.
import java.io.IOException;
import java.util.Properties;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.mail.*;
import javax.mail.internet.*;
public class ContactServlet extends HttpServlet {
public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException{
String email = request.getParameter("email");
String subject = request.getParameter("subject");
String message = request.getParameter("message");
if(!message.isEmpty()){
String host = "smtp.gmail.com";
int port = 587;
String username = "*** your Gmail username ***";
String password = "*** your Gmail password ***";
Properties props = new Properties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
Session session = Session.getDefaultInstance(props, null);
String body = message;
try {
Message m = new MimeMessage(session);
m.setFrom(new InternetAddress(email, null));
m.addRecipient(Message.RecipientType.TO, new InternetAddress("destination@example.com", "me"));
m.setSubject(subject);
m.setText(body);
Transport transport = session.getTransport("smtp");
transport.connect(host, port, username, password);
Transport.send(m);
} catch (AddressException e) {
e.printStackTrace();
} catch (javax.mail.MessagingException e) {
e.printStackTrace();
}
RequestDispatcher view = request.getRequestDispatcher("success.jsp");
view.forward(request, response);
}else{
request.setAttribute("error", "Message is empty");
RequestDispatcher view = request.getRequestDispatcher("contact.jsp"); // return to contact form
view.forward(request, response);
}
}
}
Use out.println(request.getAttribute("error")) on the contact form to show the error. A better alternative would be:
