Jboss4.x下helloworld的EJB2.x程序

文件结构： E:.│ build.XML│└─src    ├─META-INF    │      application.xml    │      ejb-jar.xml    │      jboss.xml    │    ├─powerwind    │      ClientServlet.Java    │      Hello.java    │      HelloBean.java    │      HelloHome.java    │    └─WEB-INF            jboss-web.xml            web.xml ant文件build.xml                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

更多的请看：http://www.QQread.com/windows/2003/index.Html

 java源文件Hello.javapackage powerwind; import java.rmi.RemoteException;import javax.ejb.EJBObject; publicinterface Hello extends EJBObject {    public String sayHello() throws RemoteException;} HelloHome.javapackage powerwind; import java.rmi.RemoteException;import javax.ejb.CreateException;import javax.ejb.EJBHome; publicinterface HelloHome extends EJBHome {    public Hello create() throws RemoteException, CreateException;} HelloBean.javapackage powerwind; import java.rmi.RemoteException;import javax.ejb.EJBException;import javax.ejb.SessionBean;import javax.ejb.SessionContext; publicclass HelloBean implements SessionBean {     private SessionContext context;     publicvoid ejbCreate() throws EJBException, RemoteException {    }    publicvoid ejbActivate() throws EJBException, RemoteException {    }    publicvoid ejbPassivate() throws EJBException, RemoteException {    }    publicvoid ejbRemove() throws EJBException, RemoteException {    }     publicvoid setSessionContext(SessionContext newContext)           throws EJBException {       context = newContext;    }     public String sayHello() throws EJBException {       return"Hello from ejb";    }} 用于测试的Servlet ClientServlet.javapackage powerwind; import java.io.IOException;import java.io.PrintWriter; import javax.naming.InitialContext;import javax.rmi.PortableRemoteObject;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse; publicclass ClientServlet extends HttpServlet {     publicvoid doGet(HttpServletRequest request, HttpServletResponse response)           throws ServletException, IOException {        response.setContentType("text/html");       PrintWriter out = response.getWriter();       String message = null;       try {           InitialContext ic = new InitialContext();           Object obj = ic.lookup("HelloEJB");           HelloHome home = (HelloHome) PortableRemoteObject.narrow(obj,                  powerwind.HelloHome.class);           Hello hello = home.create();           message = hello.sayHello();       } catch (Exception e) {           e.printStackTrace();       }       out.println(message);       out.flush();       out.close();    }     publicvoid doPost(HttpServletRequest request, HttpServletResponse response)           throws ServletException, IOException {       doGet(request, response);    } }  

更多的请看：http://www.qqread.com/windows/2003/index.html

 配置文件：ejb-jar.xml    HelloEJB,my first ejb program    HelloEJB                      HelloEJB           powerwind.HelloHome           powerwind.Hello           powerwind.HelloBean           Stateless           Container            jboss-jar                      HelloEJB           HelloEJB      
     application.xml    HelloEJB J2EE Application                      HelloEJB.war           /HelloEJB                      HelloEJB.jar     jboss-web.xml           HelloEJB       HelloEJB     web.xml   
       ClientServlet       powerwind.ClientServlet                ClientServlet       /ClientServlet                HelloEJB       Session       powerwind.HelloHome       powerwind.Hello      输入 ant –deploy 部署，启动Jboss服务器，在浏览器地址栏输入：http://localhost:8080/HelloEJB/ClientServlet然后看到浏览器输出“Hello from ejb”，就是成功了。