Subversion Repositories SmartDukaan

package in.shop2020.serving.interceptors;

import java.util.Date;

import javax.servlet.http.HttpServletResponse;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionInvocation;

import com.opensymphony.xwork2.interceptor.AbstractInterceptor;

public class CachingInterceptor extends AbstractInterceptor {

    private static final long serialVersionUID = -2714402286574091187L;

    private static final long SECONDS_IN_HOUR = 60*60;

    public String intercept(ActionInvocation actionInvocation) throws Exception {

        HttpServletResponse response = ServletActionContext.getResponse();

        long expiresTime = (new Date()).getTime() + SECONDS_IN_HOUR * 1000;

        response.setDateHeader("Expires", expiresTime);

        response.setHeader("Cache-Control", "public");

        return actionInvocation.invoke();

    }

}