import com.opensymphony.xwork2.ActionContext; ... ActionContext ctx = ActionContext.getContext(); ... //操作session ctx.getSession().put("key:xxx", "value:xxx"); //操作application ctx.getApplication().put("key:xxx", "value:xxx");
2. 一些重要接口
虽然Struts2提供了ActionContext来操作Servlet API, 但是这种访问
毕竟不能获得Servlet API实例。
Action如果实现了以下接口,便可访问Servlet对象。
ServletContextAware - ServletContext
ServletRequestAware - HttpServletRequest
ServletResponseAware - HttpServletResponse
eg:
import javax.servlet.http.HttpServletRequest; import org.apache.struts2.interceptor.ServletRequestAware; ... public class SharpAction implements ServletRequestAware { ... //给Action配上需要的servlet类属性 private HttpServletRequest request; //这个是接口的方法,必须要实现 public void setServletRequest(HttpServletRequest request) { this.request = request; } public String execute() throws Exception { ... request.setAttribute("key:xxx", "value:xxx"); ... }