Jbuilder5+Weblogic6.1开发EJB 的成功例子

最新推荐文章于 2025-08-11 12:19:29 发布

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本文介绍了使用Jbuilder5和weblogic6.1编写EJB的详细步骤，包括软件安装、Jbuilder5配置、EJB编写、部署，还给出了客户端JavaBean和index.jsp的代码示例，最后说明了测试方法，可帮助开发者完成EJB开发与测试。

Jbuilder5+weblogic6.1编写EJB的成功例子
1.安装Jbuilder5 enterprise 到c:/jbuider5/
BAS 安装到c:/BAS/
2.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

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