struts2的action中取得spring管理的容器中的bean

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;

import org.apache.log4j.Logger;
import org.apache.struts2.ServletActionContext;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;
import com.opensymphony.xwork2.ActionSupport;
public class MyAction  extends ActionSupport
		HttpServletRequest request = ServletActionContext.getRequest();
		ServletContext sc=request.getSession().getServletContext();
		ApplicationContext ac = WebApplicationContextUtils.getRequiredWebApplicationContext(sc);
		Object obj = (Object) ac.getBean("objectName");
}