在 Servlet中获取Spring Bean

 

在 Servlet中获取Spring Bean，备忘 不解释

 

import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

public class HeartBeatServlet extends HttpServlet  {

	private static final long serialVersionUID = 6165817221166007344L;
	
	private static Logger log = LoggerFactory.getLogger(HeartBeatServlet.class);

	private IHeartBeatBolt hbBolt;
	
	
	@Override
	public void init() throws ServletException {
		/*
		 * How do I get a spring's bean from a servlet ? 
		 * REFER: http://www.kodejava.org/examples/32.html
		 * */
		ServletContext context = getServletContext();
		WebApplicationContext applicationContext =  WebApplicationContextUtils.getWebApplicationContext(context);
		hbBolt = (IHeartBeatBolt)applicationContext.getBean("hbBolt");
		log.info("HeartBeatServlet init ok");
	}