Simple Example on Struts | Working with Struts : Step-by-step for a novice in Netbeans

Ravi Gaurav Pandey | https://cn.linkedin.com/in/ravigpandey

Simple Example on Struts with Netbeans

Hi, after a long time Im uploading any content on scribd due to lack of time and other projetcs. This time I have given a very precise step-by-step tutorial on struts. This is mainly targeted for a novice in the field. Here, first of all, you have to go through the Architecture; so as to understand the process flow of struts. Without knowing the basics of data and control flow in struts, one can develop a good struts program but cant debug whenever required. Here we go :

And also, while working with Struts, always be careful for naming of variables. Whatever name you will provide as the PROPERTY in a JSP page, must be supported by a setter and getter with similar name in ActionForm. Like, if the name of TextBox Property is TxtAddrs; then the setter and

getter would be setTxtAddrs and getTxtAddrs respectively.

Go to File->New->Project

Choose Java Web -> Web Application


Press Next, Provide Project name and Project Location

Press next, then Select your web server and context path (by default application name appear as

context path, here I am using the same)


Press Next, from the list of Frameworks select strut. Here we are providing default Action

Servlet Name and Action URL Pattern (i.e. action, *.do). Check Add Struts TLDs.

Click on finish, project will contains following content.


Create a new JSP file, with name sample. Insert following codes, which includes some Struts

html tags.

Sample Page

Name:


Right-click the SimpleStruts project node and Choose New > Other.

Under Categories choose Struts, then under File Types choose Struts ActionForm Bean.

Click Next

Provide a class name, NameForm.

Provide example as a package (It is recomended by netbeans that the java class should not be

placed in default package).


Inside Source Packages, inside example package we can find created NameForm ActionBean.

Edit NameForm code to be like below.

package example;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionErrors;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.action.ActionMessage;

/**

*

* @author Ravi

*/

public class NameForm extends org.apache.struts.action.ActionForm {

private String name = null;

public String getName() {

return (name);

}

public void setName(String name) {

this.name = name;

}

public void reset(ActionMapping mapping, HttpServletRequest request) {

this.name = null;

}

}

Create a new JSP file displayname.jsp, with following code.


Sample Struts Display Name

Hello !!

In the Projects window, right-click the SimpleStruts project node.

Choose New > Other. From the Struts category choose Struts Action and click Next.

Provide Class name as NameAction, Package as example and Action Path /name. Other option

can be left as default.


Delete the forward slash for the Input Resource field

Set Scope to Request (Session is the default scope setting in Struts.)

Deselect the Validate ActionForm Bean option

Add folloing code inside the execute() method.

package example;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;


import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;

/**

*

* @author Ravi

*/

public class NameAction extends org.apache.struts.action.Action {

@Override

public ActionForward execute(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response)

throws Exception {

String target = new String("success");

String name=null;

if ( form != null ) {

// Use the NameForm to get the request parameters

NameForm nameForm = (NameForm)form;

name = nameForm.getName();

}

// if no mane supplied Set the target to failure

if ( name == null || name.equals("")) {

target = new String("failure");

}

else {

request.setAttribute("NAME", name);

}

return (mapping.findForward(target));

}

}

Adding forward Entries to struts-config.xml in struts-config.xml, go to action-mapping tag

Right click on the NameForm action, and click add success forward and failure forward.


Now, replace the index page content with below code and run.

The running WebApp will display a form with a textbox to accept the name of a person. After

submitting the user would be redirected to displayname.jsp. But is the textbox is empty then

the user will be redirected to the first page always.

After developing this much, you can also try HttpServlets as a redirection location for your

webapp. That means despite ending the response at some JSP or HTML page, one can also

proceed ahead (if necessary) to redirect the control to some Servlet file. While doing this you

just need to add the URL of your servlet to the Forward section of struts-config.xml, just like

adding a url of JSP page.

I hope you have enjoyed this tutorial and Struts as well. Happy Coding

Simple Example on Struts | Working with Struts : Step-by-step for a novice in Netbeans

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