struts2的API

xiaoxiao2021-02-28 120

//演示如何获得ServletAPI public class Demo5Action extends ActionSupport{ //方式一: 解耦的Api访问Servlet各个域 // 操作: request|session|application域 public String execute() throws Exception { //session域 Map<String, Object> session = ActionContext.getContext().getSession(); //application域 Map<String, Object> application = ActionContext.getContext().getApplication(); //request域 //Map<String, Object> request = (Map<String, Object>) ActionContext.getContext().get("request"); ActionContext ac = ActionContext.getContext(); //------------------------------------------------------------------------------------- session.put("name", "sessionTom"); application.put("name", "applicationTom"); ac.put("name", "requestTom"); return SUCCESS; } }

//演示如何获得ServletAPI public class Demo6Action extends ActionSupport{ //方式二:获得原生Servlet对象 // 操作: request|session|application域 public String execute() throws Exception { //获得原生request对象 HttpServletRequest request = ServletActionContext.getRequest(); //获得原生response对象 HttpServletResponse response = ServletActionContext.getResponse(); //获得原生Session对象 HttpSession session = request.getSession(); //获得ServletContext对象 ServletContext servletContext = ServletActionContext.getServletContext(); //------------------------------------------------------------------------------- request.setAttribute("name", "requestJerry"); session.setAttribute("name", "sessionJerry"); servletContext.setAttribute("name", "applicationJerry"); return SUCCESS; } }

//演示如何获得ServletAPI public class Demo7Action extends ActionSupport implements ServletRequestAware { private HttpServletRequest request; //方式3:实现接口获得servlet对象 // 操作: request|session|application域 public String execute() throws Exception { request.setAttribute("name", "requestJack"); return SUCCESS; } public void setServletRequest(HttpServletRequest request) { this.request=request; } }

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