Hacking Infor Grid application development (part 2)

As a prolongation of my previous post on Hacking Infor Grid application development, this time I will show you how to add a simple HelloWorld servlet to your Infor Grid application.

HelloWorld servlet

Create a simple HelloWorld servlet:

package net.company.your;

import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class HelloWorldServlet extends HttpServlet {
	public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out.println("<html>");
		out.println("<body>");
		out.println("HelloWorld servlet! The time is " + new Date());
		out.println("</body>");
		out.println("</html>");
	}
}

Compile it with the Servlet API library that you can find in the LifeCycle Manager runtime:

E:\LifeCycle\<host>\grid\<grid>\runtimes\1.11.27\resources\servlet-api-2.5.jar
javac -cp servlet-api-2.5.jar WEB-INF\classes\net\company\your\HelloWorldServlet.java

1 2

Deployment descriptor

Create a simple deployment descriptor web.xml:

<?xml version="1.0" encoding="utf-8" ?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
	version="2.4">

	<display-name>HelloWorld Servlet</display-name>
	<description>My HelloWorld servlet</description>

	<servlet>
		<servlet-name>HelloWorldServlet</servlet-name>
		<servlet-class>net.company.your.HelloWorldServlet</servlet-class>
	</servlet>

	<servlet-mapping>
		<servlet-name>HelloWorldServlet</servlet-name>
		<url-pattern>/sup</url-pattern>
	</servlet-mapping>

</web-app>

File & folder structure

Set the following file & folder structure in a WEB-INF directory:

\---HelloWorld
    ...
    \---webapps
        \---HelloWorld
            ...
            \---WEB-INF
                |   web.xml
                |
                \---classes
                    \---net
                        \---company
                            \---your
                                    HelloWorldServlet.class

b3

With Eclipse

You can also use Eclipse to create the servlet and deployment descriptor and to compile:
e8

Deploy

You can create and deploy your servlet as a new application, or you can add WEB-INF to an existing application in LifeCycle Manager at:

E:\LifeCycle\<host>\grid\<grid>\grids\<grid>\applications\HelloWorld\webapps\HelloWorld\WEB-INF\

If you choose hot deployment, reload the Grid application module:

b4

 

 

Result

You can now test the result in a browser:
b5

And you can check the logs:
b6

Summary

That was how to add a simple servlet to your Infor Grid application. Next time, I will explore how to add JAR files and how to deploy a WAR file.

That’s it! Like + comment + subscribe + share.

Published by

thibaudatwork

M3 Technical Consultant

6 thoughts on “Hacking Infor Grid application development (part 2)”

  1. Thumbs up Thibaud! Especially for: “This is my call to Infor Product Development. If you are reading this, please jailbreak the Grid, release the tools and documentation and embrace the community. Help us reach a mutually beneficial relationship where great ideas can get out of anonymity and flourish”

    (Could not comment on the previous post)

    Like

    1. Bonjour Guillaume. Thank you. Yes, call your Infor representatives and let them know 😉 I wish they would open source Infor Grid application development, Smart Office, Infor Process Automation, Mashups, and more, at least for debugging and testing purposes. They already opened the source of M3 Java programs, why not open to more. I may start a petition.

      Like

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