How to access url parameters in struts2

Question

I am working on a struts2 project. I have created url with in my project and have passed parameters using tags. My question is how do i read the parameter in the actions? also if do the same would i be able to see the parameters as query string. i ask because i am not able to and i saw it in one of the tutorials.

Solution

Typically, you will interact with parameters in your actions by using fields on your actions, exposed by setters. Assume the following URL maps to my example Struts2 action:

URL

http://localhost/myAction?firstName=SonOfTheEARTh

Action Code

public class MyAction extends ActionSupport {
    private String firstName;

    public String execute() throws Exception {
        // do something here
        return SUCCESS;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(final String firstName) {
        this.firstName = firstName;
    }
}

JSP

Using Struts tags: <s:property value="firstName"/>

Using JSP EL/JSTL: ${action.firstName}