There are several Web Server plug-ins and Application Servers available for Linux that provide support for Java Servlets. These include:
To be written.
See http://www.allaire.com/products/jrun/for more information.
JServ has been replaced with Tomcat from the Apache Jakarta project: http://jakarta.apache.org/. This section is still written for JServ and needs to be updated.
Apache JServe is a 100% pure Java servlet engine fully compliant with the Java Servlet 2.0 specification. Apache JServ is part of the Java Apache Project. (From the Apache Java Project website).
Apache JServ can be obtained from http://java.apache.org/jserv/index.html.
>From the Apache JServ Project home page, follow the Download Apache JServ link.
Currently RPM distributions are available for RedHat Linux. For other Linux distributions you will have to build from source. The following example describes how install the RPM for RedHat 6x.
As of the time of this writing, the current version is 1.1b3.
I suggest installing files in the /usr/local directory. After downloading the files, run:
mkdir /usr/local/apachejserv mv ApacheJServ*.rpm /usr/local/apachejserv
For RedHat and RedHat-derived distributions, use the RedHat Package Manager (RPM) to install the rpm file such as:
rpm -i ApacheJServ-1.1-b2_RH6x.i386.rpm
The above example shows version 1.1-b2 for the RedHat 6x on the Intel architecture.
You will need to stop, set your Java environment variables, and restart Apache to register Apache JServ.
To stop Apache, type:
cd /etc/rc.d/init.d ./httpd stop
Note: The httpd script used at boot time may be in a different location on other Linux distributions
To set you Java environment, see the How to Install the JDK section of this document, specifically for the JDK you intend to use. You need to set several properties in the jserv.properties file installed in /etc/httpd/conf/jserv. Specifically, look for:
To restart Apache, type:
cd /etc/rc.d/init.d ./httpd start
To confirm that the Apache JServ is installed and running on your computer, open your web browser, and enter the URL: "http://127.0.0.1/servlet/IsItWorking" substituting the correct IP address if you are browsing from another machine.
You should see a web page to the effect of "Yes, It's Working!". Contratulations, you have installed, set up an environment for, and tested the Apache JServ for Linux.
For more assistance, I suggest you look into the Apache JServ website at
http://java.apache.org/jserv/index.html.
Now, to compile and run your own servlet. Enter the following Java servlet program.
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class HelloWorldServlet extends HttpServlet {
public void service (HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
}
}
For more information, I suggest you look into the Java Apache Project website at http://java.apache.org/.
See BEA WegLogic below.
To be written.
See http://www.enhydra.orgfor more information.
To be written.
See http://www-4.ibm.com/software/webservers/appserv/linux.htmlfor more information.
To be written.
See ://www.locomotive.org/for more information.
The Jetty HTTP server is a combined server and servlet container. Installation of the HTTP server (see above) provides servlet support. More information can be obtained via the demo server and tutorial installed with the HTTP server.