Jetty例子
import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.mortbay.util.ajax.Continuation;import org.mortbay.util.ajax.ContinuationSupport;public class Time extends HttpServlet {/** * Constructor of the object. */public Time() {super();}/** * Destruction of the servlet. <br> */public void destroy() {super.destroy(); // Just puts "destroy" string in log// Put your code here}/** * The doGet method of the servlet. <br> * * This method is called when a form has its tag value method equals to get. * * @param request * the request send by the client to the server * @param response * the response send by the server to the client * @throws ServletException * if an error occurred * @throws IOException * if an error occurred */public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {PrintWriter out = response.getWriter();response.setContentType("text/html");Continuation cc = ContinuationSupport.getContinuation(request, null);System.out.println(cc);while (true) {cc.suspend(2000); // suspend the responseString jscript = "<script type="text/javascript"> document.write('你好'); </script>";out.println(jscript);out.flush();System.out.println("Test");}// out// .println("<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01// Transitional//EN">");// out.println("<HTML>");// out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");// out.println(" <BODY>");// out.print(" This is ");// out.print(this.getClass());// out.println(", using the GET method");// out.println(" </BODY>");// out.println("</HTML>");// out.flush();// out.close();}/** * The doPost method of the servlet. <br> * * This method is called when a form has its tag value method equals to * post. * * @param request * the request send by the client to the server * @param response * the response send by the server to the client * @throws ServletException * if an error occurred * @throws IOException * if an error occurred */public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {response.setContentType("text/html");PrintWriter out = response.getWriter();out.println("<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">");out.println("<HTML>");out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");out.println(" <BODY>");out.print(" This is ");out.print(this.getClass());out.println(", using the POST method");out.println(" </BODY>");out.println("</HTML>");out.flush();out.close();}/** * Initialization of the servlet. <br> * * @throws ServletException * if an error occurs */public void init() throws ServletException {// Put your code here}}?