圆月山庄资源网 Design By www.vgjia.com

一:访问或添加request/session/application属性
 
复制代码 代码如下:
public String scope() throws Exception{

   ActionContext ctx = ActionContext.getContext();

   ctx.getApplication().put("app", "应用范围");//往ServletContext里放入app

   ctx.getSession().put("ses", "session范围");//往session里放入ses

   ctx.put("req", "request范围");//往request里放入req

   return "scope";

}

 

JSP:
复制代码 代码如下:
 <body>

    ${applicationScope.app} <br>

    ${sessionScope.ses}<br>

    ${requestScope.req}<br>

 </body>

 

二:获取HttpServletRequest / HttpSession / ServletContext / HttpServletResponse对象
 

方法一,通过ServletActionContext.类直接获取:
复制代码 代码如下:
public String rsa() throws Exception{

       HttpServletRequest request = ServletActionContext.getRequest();

       ServletContext servletContext = ServletActionContext.getServletContext();

       request.getSession()

       HttpServletResponse response = ServletActionContext.getResponse();

       return "scope";

}

方法二,实现指定接口,由struts框架运行时注入:
复制代码 代码如下:
public class HelloWorldAction implements ServletRequestAware, ServletResponseAware, ServletContextAware{

       private HttpServletRequest request;

       private ServletContext servletContext;

       private HttpServletResponse response;

       public void setServletRequest(HttpServletRequest req) {

              this.request=req;

       }

       public void setServletResponse(HttpServletResponse res) {

              this.response=res;

       }

       public void setServletContext(ServletContext ser) {

              this.servletContext=ser;

       }

}

标签:
Struts2,servlet

圆月山庄资源网 Design By www.vgjia.com
广告合作:本站广告合作请联系QQ:858582 申请时备注:广告合作(否则不回)
免责声明:本站文章均来自网站采集或用户投稿,网站不提供任何软件下载或自行开发的软件! 如有用户或公司发现本站内容信息存在侵权行为,请邮件告知! 858582#qq.com
圆月山庄资源网 Design By www.vgjia.com