Action 访问Servlet API的三种方法

Action 访问Servlet API的三种方法

一、ActionContext

ActionContext ac=ActionContext.getContext();
Map session=ac.getSession();
session.put("username", username);
session.put("password", password);

读取值
welcome ${session.username} <br>
welcome ${session.password} <br>

二、实现ServletRequestAware, ServletResponseAware接口（不推荐，耦合太大）

implements ServletRequestAware, ServletResponseAware
private HttpServletRequest request;
private HttpServletResponse response;

public void setServletRequest(HttpServletRequest request)
{
this.request=request;
}
public void setServletResponse(HttpServletResponse response)
{
this.response=response;
}
execute()中的方法：
HttpSession session=request.getSession();
session.setAttribute("username", username);
session.setAttribute("password", password);

读取值
welcome ${session.username} <br>
welcome ${session.password} <br>

三、ServletActionContext方法（推荐使用）

HttpServletRequest request = ServletActionContext.getRequest();
HttpServletResponse response=ServletActionContext.getResponse();
request.getSession().setAttribute("username", username);
request.getSession().setAttribute("password", password);