HttpServletResponse in Struts 2 Action Class

There are two ways to get the servlet response object inside struts 2 action class’s execute method.

• ServletActionContext : Directly accessing the getresponse method from the ServletActionContext class will return the response object.
• ServletResponseAware : If you implement the action class with ServletResponseAware interface, then struts controller will send the response object through setServletResponse method. You are requested to declare a variable for response object and write getter and setter methods.

1. ServletActionContext

import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.ServletActionContext;

public class Struts2HelloWorldAction{
	public String execute() {
		HttpServletResponse response = ServletActionContext.getResponse();
		return "SUCCESS";
	}
}

2. ServletResponseAware

import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.interceptor.ServletResponseAware;

public class Struts2HelloWorldAction implements ServletResponseAware{

	HttpServletResponse response;

	public String execute() {
		Locale locale = getServletResponse().getLocale();
		return "SUCCESS";

	}

	public void setServletResponse(HttpServletResponse response) {
		this.response = response;
	}

	public HttpServletresponse getServletResponse() {
		return this.response;
	}
}

However, it is recommended to use ServletResponseAware instead of ServletActionContext method.