Jbuilder5+Weblogic6.1开发EJB 的成功例子

王朝java/jsp·作者佚名  2006-01-08
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Jbuilder5+weblogic6.1编写EJB的成功例子

1.安装Jbuilder5 enterprise 到c:\jbuider5 BAS 安装到c:\BAS2.安装weblogic6.1 到C:\bea

weblogic 在C:\bea\wlserver6.1 下

3.配置jbuidler5(否则会发现创建ejb的选项是灰色的)

Tools\Enterprise setup

Application Server

BAS 4.5: 选择BAS安装目录c:\BAS

Weblogic6.0:

weblogic installation directory 选择C:\bea\wlserver6.1

bea home directory 选择 C:\bea

4.编写EJB

package:ejbpro

ejb group name:ejbgroup

包文件:ejbgroup.jar,包含ejb-jar.xml,manifest.mf,weblogic-ejb-jar.xml,以及ejbpro下的所有编译过的类文件

类文件:

1)远程接口

//myFirst.java//remote interface

package ejbpro;

import java.rmi.*;

import javax.ejb.*;

/**

* Title:

* Description:

* Copyright: Copyright (c) 2002

* Company:

* @author

* @version 1.0

*/

public interface myFirst extends EJBObject {

public String message(String str) throws RemoteException;

}

2)Bean类

//myFirstBean.java//bean object

package ejbpro;

import java.rmi.*;

import javax.ejb.*;

/**

* Title:

* Description:

* Copyright: Copyright (c) 2002

* Company:

* @author

* @version 1.0

*/

public class myFirstBean implements SessionBean {

private SessionContext sessionContext;

public void ejbCreate() {

}

public void ejbRemove() throws RemoteException {

}

public void ejbActivate() throws RemoteException {

}

public void ejbPassivate() throws RemoteException {

}

public void setSessionContext(SessionContext sessionContext) throws RemoteException {

this.sessionContext = sessionContext;

}

public String message(String str)throws RemoteException{

System.out.println("Remote Object Received From Client: \""+str+"\""); //打印(从客户端)接收到的字符串。

return "Hello,I'm Remote Object"; //返回一应答字符串。

}

}

3)HOME接口

//myFirstHome.java//remote home

package ejbpro;

import java.rmi.*;

import javax.ejb.*;

/**

* Title:

* Description:

* Copyright: Copyright (c) 2002

* Company:

* @author

* @version 1.0

*/

public interface myFirstHome extends EJBHome {

public myFirst create() throws RemoteException, CreateException;

}

4)客户端javaBean

//Client.java//java Bean

package ejbpro;

/**Client side JavaBean to call EJB

* By TomChen

* 2002-4-26

*/

public class Client {

public String message(){

String receiveFromRemote="Error";

try{

javax.naming.Context initContext=new javax.naming.InitialContext();

Object obj=initContext.lookup("myj2ee"); //远程查找,由名字得到对应的对象。

myFirstHome home=(myFirstHome)javax.rmi.PortableRemoteObject.narrow(obj,myFirstHome.class);

myFirst remote=home.create();

receiveFromRemote=remote.message("Hello,Remote Object!"); //远程方法调用

//System.out.println("Received From Remote Object: \""+receiveFromRemote+"\"");

}

catch(Exception e){

e.printStackTrace();

}

return receiveFromRemote;

}

public static void main(String[] args){

try{

javax.naming.Context initContext=new javax.naming.InitialContext();

Object obj=initContext.lookup("myj2ee"); //远程查找,由名字得到对应的对象。

myFirstHome home=(myFirstHome)javax.rmi.PortableRemoteObject.narrow(obj,myFirstHome.class);

myFirst remote=home.create();

String receiveFromRemote=remote.message("Hello,Remote Object!"); //远程方法调用

System.out.println("Received From Remote Object: \""+receiveFromRemote+"\"");

}

catch(Exception e){

e.printStackTrace();

}

}

}

5.部署EJB

1)将ejbgroup.jar copy 到C:\bea\wlserver6.1\config\mydomain\applications 2)将ejbpro copy 到 C:\bea\wlserver6.1\config\mydomain\applications\DefaultWebApp\WEB-INF\classes

3)启动weblogic default server

进入控制台http://localhost:7001/console

点击左面的操作目录 Deployement 下的EJB,点击右框架中的Install a new EJB...Upload ejbgroup.jar

上传后左边的EJB下出现ejbgroup,点击,在右边的框架中选中 Deployed,点击Apply

finised.

6.编写index.jsp

<html>

<head>

<title>EJB测试 </title>

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

</head>

<body bgcolor="#FFFFFF">

<jsp:useBean id="ejb" class="ejbpro.Client"/>

<%

String str=ejb.message();

out.println(str);

%>

</body>

</html>

放在C:\bea\wlserver6.1\config\mydomain\applications\DefaultWebApp\下

7.开始测试 http://localhost:7001/index.jsp

有问题联系我chenwpp@21cn.com

 
 
 
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