Struts2.0学习笔记 --- 访问或添加几个属性的三种方式

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第一种方式：最常用到

public String execute() {ActionContext ac=ActionContext.getContext();ac.getApplication().put("app", "application");ac.getSession().put("ses", "session");ac.put("req","context");return SUCCESS;}

获取时直接

    ${applicationScope.app }    ${sessionScope.ses }    ${requestScope.con }

第二种方式：

HttpServletRequest request=ServletActionContext.getRequest();ServletContext servletContext=ServletActionContext.getServletContext();request.setAttribute("req", "req");HttpServletResponse  response = ServletActionContext.getResponse();

第三种方式：

实现制定接口，由struts框架运行时注入：

public class ShowWords implements ServletRequestAware, ServletResponseAware, ServletContextAware {private HttpServletRequest  request;private ServletContext servletContext;private HttpServletResponse response;public String execute() {request.setAttribute("req", "arg0");return "success";}@Overridepublic void setServletContext(ServletContext arg0) {servletContext=arg0;}@Overridepublic void setServletResponse(HttpServletResponse arg0) {response=arg0;}@Overridepublic void setServletRequest(HttpServletRequest arg0) {request=arg0;}}

直接执行execute，便可把数据储存在request域中，访问方式同第一种情况。

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