action解耦方式

ServletAction方式，必须要有Servlet容器作支持

package com.hanqi.action;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.struts2.ServletActionContext;

public class TestServletAction {

public String testServletAction()
{
	//访问原生的web资源
	
	
	//1得到servletContext,相当于application
	ServletContext sc= ServletActionContext.getServletContext();
	
	System.out.println("app1="+sc.getAttribute("app1"));
	
	sc.setAttribute("app2", "原生的方式加入的application");
	
	//2访问Session
	HttpServletRequest hsr=ServletActionContext.getRequest();
	HttpSession hs=hsr.getSession();
	System.out.println("ses1="+hs.getAttribute("ses1"));
	hs.setAttribute("ses2", "原生方式放入的session");
	
	
	//3访问request
	System.out.println("req1="+hsr.getAttribute("req1"));
	
	hsr.setAttribute("req2", "原生方式放入的request");
	
	
	//4 访问parameter
	
	System.out.println("user1="+hsr.getParameter("user"));
	System.out.println("user2="+hsr.getParameter("user"));
	return "success";
}

}

实现接口方式

package com.hanqi.action;

import javax.servlet.ServletContext;
import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.struts2.interceptor.ServletRequestAware;
import org.apache.struts2.util.ServletContextAware;

public class TestServletActionAware
implements ServletRequestAware, ServletContextAware {

private ServletContext sc;
private HttpServletRequest hsr;
private HttpSession hs;
@Override
public void setServletContext(ServletContext arg0) {

	sc=arg0;

}

@Override
public void setServletRequest(HttpServletRequest arg0) {

	hsr=arg0;
	
	hs=arg0.getSession();
}

public String testServletAware()
{
	System.out.println("app1="+sc.getAttribute("app1"));
	
	sc.setAttribute("app2", "新的application");
	System.out.println("ses1="+hs.getAttribute("ses1"));
	
	hs.setAttribute("ses2","新的session");
	System.out.println("user="+hsr.getParameter("user"));
	
	hsr.setAttribute("req2", "新的request");
	return "success";
}

}