Hello world servlet in Glassfish. Need help to start, please.

Question

Hello.
I am new to servlet technology. I am reading the Servlet specification 2.4 and I want to try everything on practice. I want to start using the Glassfish. Currently I want to try it as a simple servlet container. A few years ago I used to work with tomcat and it was easy to compile a servlet and see its output in the browser. But now I am totaly confused with Glassfish but still I want to know more about it.
So my question is:
I compiled my helloworld servlet using jsdk1.5 and using libraries that came with sun app server 9 (glassfish). And now I want to see my servlet working. But I cannot find where should I put my compiled servlet (previously I put it into WEB-INF/classes). I also cannot find the web application descriptor (previously web.xml) to declare my servlet. Please, point me in the right direction so I could start with Glassfish and j2ee 5.0.
Thanks,
Grisha.

Answer 1

Enter this line as the first line of code in your servlet source file.
package com.servlet;Create remainder of directory structure on web server i.e. com/servlet
So you should have this:~
~ROOT/WEB-INF/classes/com/servlet/
Place simpleServlet into above directory
So you should have this:~
~ROOT/WEB-INF/classes/com/servlet/simpleServlet.java
create a web.xml file and put the following into it.
<web-app>
    <servlet>
        <servlet-name>simpleServlet</servlet-name>
        <servlet-class>com.servlet.simpleServlet</servlet-class>
   </servlet>
       <servlet-mapping>     
              <servlet-name>simpleServlet</servlet-name>
              <url-pattern>/simpleServlet </url-pattern>
        </servlet-mapping>
</web-app>Place web.xml in ~/ROOT/WEB-INF/
So you should have this:
~/ROOT/WEB-INF/web.xml
Start your webserver. open web browser and type
http://localhost:8080/simpleServlet
That should go a long way to getting you started. I never used Glassfish so I just hope the directory structure is as I expect.