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发布时间:2016-01-01 作者:网络 阅读:196次

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:
 

    ${applicationScope.app}

    ${sessionScope.ses}

    ${requestScope.req}

 

 

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;

       }

}

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