(08)通过和 ServletAPI 耦合的方式获取 WEB 资源

public String test() {
        /*
         * ServletActionContext 可以获取到当前Action对象所需要的一切Servlet API相关的对象。
         */
        HttpServletRequest request = ServletActionContext.getRequest();
        HttpSession session = ServletActionContext.getRequest().getSession();
        HttpServletResponse response = ServletActionContext.getResponse();
        ServletContext context = ServletActionContext.getServletContext();

        //......

        return "success";
    }

package com.qbz.struts2_03_03;

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

import org.apache.struts2.interceptor.ServletRequestAware;
import org.apache.struts2.interceptor.ServletResponseAware;
import org.apache.struts2.util.ServletContextAware;
/*
 * 通过实现ServletXXXAware 接口的方式可以由Struts2 注入需要的Servlet相关的对象
 * 
 * ServletRequestAware：注入HttpServletRequest 对象
 * ServletContextAware：注入ServletContext 对象
 * ServletResponseAware：注入HttpServletResponse 对象
 * 
 */
public class ServletXXXAwareTest implements ServletContextAware,ServletRequestAware,ServletResponseAware{

    private HttpServletRequest request ;
    private HttpSession session = request.getSession();
    private HttpServletResponse response ;
    private ServletContext context ;

    public String test(){

        //......

        return "success";
    }

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

    @Override
    public void setServletRequest(HttpServletRequest request) {
        this.request = request;
    }

    @Override
    public void setServletContext(ServletContext context) {
        this.context = context;
    }

}