一、直接实现Action接口或集成ActionSupport类（推荐）
public class HelloAction implements Action {
@Override
public String execute() throws Exception {
Map<String, Object> requestScope = (Map<String, Object>) ActionContext.getContext().get("request");
Map<String, Object> sessionScope = ActionContext.getContext().getSession();
Map<String, Object> applicationScope = ActionContext.getContext().getApplication();
Map<String, Object> params = ActionContext.getContext().getParameters();
requestScope.put("name", "request");
sessionScope.put("name", "session");
applicationScope.put("name", "application");
String[] strs = (String[]) params.get("name");
System.out.println(Arrays.toString(strs));
return SUCCESS;
}
}
二、使用ServletActionContext对象获得原生的Servlet对象
public class HelloAction implements Action {
@Override
public String execute1() {
HttpServletRequest request = ServletActionContext.getRequest();
HttpServletResponse response = ServletActionContext.getResponse();
HttpSession session = request.getSession();
ServletContext context = ServletActionContext.getServletContext();
return SUCCESS;
}
}
三、
public class HelloAction extends ActionSupport implements ServletRequestAware, ServletResponseAware, SessionAware {
private HttpServletRequest request;
private HttpServletResponse response;
private Map<String, Object> session;
@Override
public void setSession(Map<String, Object> session) {
// TODO Auto-generated method stub
this.session = session;
}
@Override
public void setServletResponse(HttpServletResponse response) {
// TODO Auto-generated method stub
this.response = response;
}
@Override
public void setServletRequest(HttpServletRequest request) {
// TODO Auto-generated method stub
this.request = request;
}
@Override
public String execute() throws Exception {
return SUCCESS;
}
}