Strut2------获取界面返回的session,application,parameter

1.Action类下的代码

public class ServletActionDemo extends ActionSupport {

    @Override

    public String execute() throws Exception {

        ActionContext context = ActionContext.getContext();

        Map<String, Object> sessionMap = context.getSession();

        Map<String, Object> applicationMap = context.getApplication();

        System.out.println(sessionMap);

        System.out.println(applicationMap.get("pass"));

        //获取URL地址上的？后面的参数内容

//      Map<String, Object> paramMap = context.getParameters();

//      System.out.println(((String[])paramMap.get("username"))[0]);

//      context.put("name", "天恒");

        HttpServletRequest request = ServletActionContext.getRequest();

        ActionContext context = ServletActionContext.getActionContext(request);

//      context = ActionContext.getContext();

//      context = ServletActionContext.getContext();

        System.out.println(context.getSession());

        return SUCCESS;

    }

}    

2.

public class ServletActionDemo2 extends ActionSupport implements ServletRequestAware{

    private HttpServletRequest request;

    @Override

    public String execute(){

        ActionContext context = ActionContext.getContext();

        HttpServletRequest request = ServletActionContext.getRequest();

        //request.getParameter("age")

        //context.getSession()

        System.out.println(request.getParameter("pass"));

        return SUCCESS;

    }

    @Override

    public void setServletRequest(HttpServletRequest request) {

        this.request = request;

    }

}