使用jetty实现服务器端推的技术

public class ContinuationServlet extends HttpServlet {

public void service(HttpServletRequest req, HttpServletResponse res)
throws java.io.IOException {

String reqId = req.getParameter("id");

Continuation cc = ContinuationSupport.getContinuation(req,null);

res.setContentType("text/plain");
res.getWriter().println("Request: "+reqId+"\tstart:\t"+new Date());
res.getWriter().flush();

cc.suspend(2000);

res.getWriter().println("Request: "+reqId+"\tend:\t"+new Date());
}
}