Struts2访问servlet分享

Shun

一：访问或添加request/session/application属性

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:

<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：

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：

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;
     }
}

[JSP] Struts2访问servlet分享

相关帖子

SpringBoot学习笔记（四、JPA）

鸿蒙OS应用开发之——项目介绍，Android社招面经分享

php中cookie与session的区别点总结

SpringBoot JWT实现token登录刷新功能

Java基础教程之获取操作系统及浏览器信息

oracle ORA-00031:session marked for kill（标记要

Oracle中死事务的检查语句

网页显示400 bad request的解决方法

华为游戏登录，解析凭证Access Token接口报{“error”：“invalid session”}

织梦DEDECMS伪静态下某些栏目显示:”Request Error!”的解决方法

Shun LV3