This is a tutorial for how to implement your first Java application in Websphere CE server.
The example I am using is from Head First Servlet & JSP (Chapter 3).
User selects a value from form.html page and clicks submit button. The value will be passed to a servlet BeerSelect.java and then display the result.
Environment:
Eclipse 3.3, Websphere Community Edition 2.0
Step by Step:
1. Create a project called TestProject.
File -> New -> Web -> Dynamic Web Project
Project name: TestProject
Then click Finish.
2. In WebContent folder, create form.html file.
form.html
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<html>
<body>
<h1 align="center">Beer Selection Page</h1>
<form method="POST" action="SelectBeer.do">
Select beer characteristics<p>
Color:
<select name="color" size="1">
<option>light
<option>amber
<option>brown
<option>dark
</select>
<br><br>
<center>
<input type="SUBMIT">
</center>
</form>
</body>
</html>
3. In Java Resources: src folder, create package com.example.web.
Create BeerSelect.java file in this package.
BeerSelect.java
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package com.example.web;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class BeerSelect extends HttpServlet {
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("Beer Selection Advice<br>");
String c = request.getParameter("color");
out.println("<br>Got beer color " + c);
}
}
Pay attention to build folder: it will automatically generate com.example.web.BeerSelect.class file.
4. Change web.xml file.
web.xml
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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>TestProject</display-name>
<servlet>
<servlet-name>Ch3 Beer</servlet-name>
<servlet-class>com.example.web.BeerSelect</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Ch3 Beer</servlet-name>
<url-pattern>/SelectBeer.do</url-pattern>
</servlet-mapping>
</web-app>
5. This is geronimo-web.xml file.
geronimo-web.xml
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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://geronimo.apache.org/xml/ns/j2ee/web-1.1" xmlns:nam="http://geronimo.apache.org/xml/ns/naming-1.1" xmlns:sec="http://geronimo.apache.org/xml/ns/security-1.1" xmlns:sys="http://geronimo.apache.org/xml/ns/deployment-1.1">
<sys:environment>
<sys:moduleId>
<sys:groupId>default</sys:groupId>
<sys:artifactId>TestProject</sys:artifactId>
<sys:version>1.0</sys:version>
<sys:type>car</sys:type>
</sys:moduleId>
</sys:environment>
<context-root>/TestProject</context-root>
</web-app>
6. Start server and add project.
Right click server, choose Add and Remove Projects, add TestProject.
7. After project published, open browser and input http://localhost:8080/TestProject/form.html.
Your application is running.
