如何使用ActionContext中的参数，请求和会话对象？

本文介绍了如何使用ActionContext中的参数，请求和会话对象？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 在这段代码中，我使用ActionContext从Request对象获取Session和ServletActionContext。我觉得这是不好的做法，因为必须只对Request对象使用ActionContext。Here in this code I am using ActionContext to get Session and ServletActionContext from Request object. I feel this is bad practice, as one must use ActionContext only for Request object. ActionContext的Request对象是否等同于Servlets中的Request对象？如果是，如何使用它来获取请求参数？Is ActionContext's Request object equivalent to the Request object in Servlets ? If yes, how to get request parameters using it ?Map session = (Map) ActionContext.getContext().getSession();HttpServletRequest request = ServletActionContext.getRequest();String operatorId = request.getParameter("operatorId");session.put("OperatorId", operatorId);// getting hashmap from BeananalysisNames= slsLoginDetailsRemote.getAnalysisNamesIdMap();// sending map for multiselectsession.put("AnalysisNames",analysisNames);推荐答案在Struts2中，会话映射和请求映射是包装器底层的HttpServletRequest和Session对象。In Struts2, Session Map and Request Map are wrappers for the underlying HttpServletRequest and Session objects.如果您只需要访问属性，请使用包装器。If you only need to access attributes, use the wrappers.使用ActionContext获取它们（两者都是包装器和底层HTTP对象）仅如果你在拦截器或 POJO 内。Use ActionContext to get them (both the wrappers and the underlying HTTP objects) only if you are inside an Interceptor or a POJO.如果您在 Action 中，最佳做法是实现一个自动填充Action的接口对象：If you are inside an Action, the best practice is to implement an Interface that will automatically populate your Action's object:要获取 请求地图包装 ，使用 RequestAwarepublic class MyAction implements RequestAware { private Map<String,Object> request; public void setRequest(Map<String,Object> request){ this.request = request; }}获取 会话地图包装 ，使用 SessionAwarepublic class MyAction implements SessionAware { private Map<String,Object> session; public void setSession(Map<String,Object> session){ this.session = session; }}获取基础 HttpServletRequest 和 HttpSession 对象，使用 ServletRequestAware ：To get the underlying HttpServletRequest and HttpSession objects, use ServletRequestAware:public class MyAction implements ServletRequestAware { private javax.servlet.http.HttpServletRequest request; public void setServletRequest(javax.servlet.http.HttpServletRequest request){ this.request = request; } public HttpSession getSession(){ return request.getSession(); }}也就是说，JSP页面之间的标准数据流和动作或动作和动作是通过Accessors / Mutators获得的，更好地称为Getters和Setters。不要重新发明轮子。That said, the standard data flow between JSP pages and Actions, or Actions and Actions, is obtained through Accessors / Mutators, better known as Getters and Setters. Don't reinvent the wheel. 这篇关于如何使用ActionContext中的参数，请求和会话对象？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！