How to set up Eclipse environment to develop a Portlet Project

This example uses Eclipse Helios, Ubuntu 10.04 and Liferay V6.0(Tomcat)
First of all, download liferay-portal-tomcat-6.0.6-20110225.zip and liferay-plugins-sdk-6.0.6-20110225.zip from http://sourceforge.net/projects/lportal/files/Liferay%20Portal/6.0.6/



Next, open Eclipse and go to Help/Install New Software. After that, click Add to add a new repository. Set the name as Liferay and the location as http://releases.liferay.com/tools/ide/eclipse/helios/stable


Then, you have to select Liferay repository and check Liferay Tools and click Next to download Liferay plugins for Eclipse. Also, you have to accept the license.




When the process installation finishes, you must restart Eclipse IDE.



Next, extract the contents of liferay-portal-tomcat-6.0.6-20110225.zip and liferay-plugins-sdk-6.0.6-20110225.zip in any directory of your computer.

After that, configure a New Server in Eclipse. You must lookup for Liferay V6.0


Set the Liferay Tomcat Directory(this target must be the Tomcat server which is into Liferay server).


Set the Tomcat bundle zip(this target must be the ext.zip into the ext directory of the liferay-plugins-sdk)




Finally, click Finish.


Now, we have to configure the Eclipse preferences for Liferay.

Lookup for Liferay Installed Plugin. Click add.



Set the location where you extracted liferay-plugins-sdk and set a name. Finally, click OK

click ok again.





Then we are going to create our first project.
click on File/new/Liferay Project

Set the name for the project


Click Next.

Select Liferay MVC and check Create Custom portlet class



Click Next.


Set name for the portlet class, set a java package and select javax.portlet.GenericPortlet as superclass then Click Next.



You may change the name of the portlet for Liferay, click Next



Also, you may change the css styles also set the category where the portlet will be set. Click Next



In this screen you should check the option processAction to process information which will be sent from a form.


Next, change view.jsp to:
<%@ taglib uri="http://java.sun.com/portlet_2_0" prefix="portlet" %>
<portlet:defineObjects />
${message}
<form id="formData" action="<portlet:actionURL/>" method="POST">
<table>
<tr><td>Phone:</td><td><input type="text" name="phone"></td></tr>
<tr><td>Email:</td><td><input type="text" name="email"></td></tr>
<tr><td><input type="submit" value="Send Info"></td>
<td><input type="reset" value="Clean"></td></tr>
</table>
</form>

Next, create a new JSP page. Right Click over the project new/other/Web/JSP


set the name result.jsp



Change result.jsp to:
<%@ taglib uri="http://java.sun.com/portlet_2_0" prefix="portlet" %>
<portlet:defineObjects />
${info}

After that, open the file PorletTest.java.

Change processAction to:
public void processAction(
ActionRequest actionRequest, ActionResponse actionResponse)
throws IOException, PortletException {
String phone = (String) actionRequest.getParameter("phone");
String email = (String) actionRequest.getParameter("email");
String info="You entered the following information:"+phone+","+email;
actionResponse.setRenderParameter("info", info);
}

Also, Change doView method to:
public void doView(
RenderRequest renderRequest, RenderResponse renderResponse)
throws IOException, PortletException {
if(renderRequest.getParameter("info")==null){
renderRequest.setAttribute("message", "Please, enter your phone number and email");
include(viewJSP, renderRequest, renderResponse);
}else{
renderRequest.setAttribute("info",renderRequest.getParameter("info"));
PortletRequestDispatcher prd = getPortletContext().getRequestDispatcher("/html/portlettest/result.jsp");
prd.include(renderRequest, renderResponse);
}
}



Next, right click over the project. Select Run on Server and choose Liferay V.6 and click Finish.


The liferay server home page will be opened.


Sign in as user test@liferay.com with password test



Click on Add/more and lookup for PortletTest. Next click add.

The form will appear. Enter the data


Click Send Info