servlet2stateless.java
来自「J2EE 项目各个技术的源码」· Java 代码 · 共 71 行
JAVA
71 行
/* * Copyright 2002 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */package enterprise.servlet_stateless_war;import java.io.*;import javax.ejb.EJB;import javax.servlet.*;import javax.servlet.http.*;import javax.naming.*;import enterprise.servlet_stateless_ejb.*;// Though it is perfectly fine to declare the dependency on the bean// at the type level, it is not required for stateless session bean// Hence the next two lines are commented and we rely on the// container to inject the bean.// @EJB(name="StatelessSession", beanInterface=StatelessSession.class)public class Servlet2Stateless extends HttpServlet { // Using injection for Stateless session bean is still thread-safe since // the ejb container will route every request to different // bean instances. However, for Stateful session beans the // dependency on the bean must be declared at the type level @EJB private StatelessSession sless; public void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { resp.setContentType("text/html"); PrintWriter out = resp.getWriter(); try { out.println("<HTML> <HEAD> <TITLE> Servlet Output </TITLE> </HEAD> <BODY BGCOLOR=white>"); out.println("<CENTER> <FONT size=+1> Servlet2Stateless:: Please enter your name </FONT> </CENTER> <p> "); out.println("<form method=\"POST\">"); out.println("<TABLE>"); out.println("<tr><td>Name: </td>"); out.println("<td><input type=\"text\" name=\"name\"> </td>"); out.println("</tr><tr><td></td>"); out.println("<td><input type=\"submit\" name=\"sub\"> </td>"); out.println("</tr>"); out.println("</TABLE>"); out.println("</form>"); String val = req.getParameter("name"); if ((val != null) && (val.trim().length() > 0)) { out .println("<FONT size=+1 color=red> Greeting from StatelessSessionBean: </FONT> " + sless.sayHello(val) + "<br>"); } out.println("</BODY> </HTML> "); } catch (Exception ex) { ex.printStackTrace(); System.out.println("webclient servlet test failed"); throw new ServletException(ex); } }}⌨️ 快捷键说明
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