Solved

servlet/jsp invocation error

Posted on 2012-03-15
3
618 Views
Last Modified: 2012-03-15
Hello:

I am learning jsp/servlets using tomcat. Please find attached along with this question a zip file containing source code for a simple MVC pattern wherein the servlet is the controller, the JSP is the view and a Plain Old Java Class as the model. Also included in the code is the actual (compiled) webapp ready to be deoplyed in tomcat. This webapp is in the folder titled "serveonce".
Sources are included in a separate directory.
The application compiles fine but when I try to run it I get an error as shown in the file err.png (included in the zip file).
All of the above code is in the zip file attached below in my second post below. The filename is code.zip/
Please let me know where I am going wrong?

 (since experts exchange wont allow me to attach a .jsp file I am including it in the code below. The jsp file goes under the "serveonce " folder.
newjsp.jsp

<%@ page import = "java.lang.String" %>

<html>
    <body>
        <h1 align="center">My First Servlet</h1>
        <%
            String myName = (String)request.getAttribute("Names");
            out.println(myName);
         %>

    </body>
</html>

Open in new window

0
Comment
Question by:arjoshi77
3 Comments
 

Author Comment

by:arjoshi77
ID: 37724116
0
 
LVL 9

Accepted Solution

by:
arioh earned 500 total points
ID: 37724395
hi

According to err.png you are just opening a folder with your app in FF, but not running your webapp. You should open an url instead. It would be like "http://localhost:<tomcat port>/serveonce/form.html". Tomcat port is usually 8888 or 8080
0
 
LVL 7

Expert Comment

by:gudii9
ID: 37725049
You should provide application context name and servlet name and port everything in the url like
http://localhost:8080/firstapp/myServlet(depending on the exact port number, path)

Here are interesting explanation, examples, links

http://www.java-samples.com/showtutorial.php?tutorialid=552


http://oreilly.com/catalog/javacook/chapter/ch18.html

http://www.javalobby.org/java/forums/t15789.html
http://www.redbooks.ibm.com/redbooks/pdfs/sg245755.pdf
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This was posted to the Netbeans forum a Feb, 2010 and I also sent it to Verisign. Who didn't help much in my struggles to get my application signed. ------------------------- Start The idea here is to target your cell phones with the correct…
Java functions are among the best things for programmers to work with as Java sites can be very easy to read and prepare. Java especially simplifies many processes in the coding industry as it helps integrate many forms of technology and different d…
This theoretical tutorial explains exceptions, reasons for exceptions, different categories of exception and exception hierarchy.
This tutorial will introduce the viewer to VisualVM for the Java platform application. This video explains an example program and covers the Overview, Monitor, and Heap Dump tabs.

863 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now