實戰JBuilder7+WebLogic7（四）續JMS+Message-Driven Bean (轉)

實戰JBuilder7+WebLogic7（四）續JMS+Message-Driven Bean (轉)[@more@]

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內容簡介：
1。連線MS SERVER2000
2。Session Bean
3。Entity Bean
4。JMS+Message-Driven bean
5。（待續）

全部實戰內容都經過嚴格測試，決無問題，只需嚴格按照文中步驟即可！

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LOGIC

1.  啟動WebLogic7

2.  開啟，在位址列中輸入：<

3.  輸入名和密碼

4.  在左邊的目錄樹中選中Services->JMS->Connection Factories，單擊右側的Configure a new JMS Connection Factory ，輸入以下資訊：

Configuration->General頁：

Name = MDBDemo Connection Factory

JNDIName= MDBDemoCF

其它不變，單擊Create建立Connection Factory。

Targets->Server頁：

將myserver(名稱)移至右側的列表中，但擊單擊Apply

5.  在左邊的目錄樹中選中Services->JMS->Stores，單擊右側的Configure a new JMileStore，輸入以下資訊：

Configuration->General頁：

Name ＝ MDBDemo Store

Directory: ＝ F:beauser_projectsmyainJMSStores （任意存在的目錄即可）

單擊Create建立JMSFileStore。

6.  Services->JMS->Servers，單擊右側的Configure a new JMS Connection Factory ，輸入以下資訊：

Configuration->General頁：

Name ＝ MDBDemo JMSServer

Store ＝ MDBDemo Store

其它不變，單擊Create建立JMS Server。

Targets->Servers頁：

Target ＝ myserver（你的weblogic server的名字）

單擊Configuration->General頁中的Configure Destinations

Name = MDBDemo Topic

JNDIName= MDBDemo Topic

其它不變，單擊Create建立Destination。

配置完畢。

建立Message Driven Bean：

1． 關閉所有工程：File->Close Projects

2． 選擇File－>New project

3． 在Name欄中輸入MDBDemo，Directory欄中輸入存放路徑（不要有空格），其他不變，單擊Finish。

4． 選擇File－>New->Enterprise->EJB Module單擊OK。

5． 在彈出的對話方塊中，在Name中輸入MDBMoudle, Version選擇：EJB2.0 Compliant其餘不變,單擊OK關閉當前對話方塊。

6． 在右側的EJB Designer 中單擊滑鼠右鍵選擇：Create EJB－>Message－Driven Bean，按如下填寫：

Bean Name ＝ MDBDemo

Transaction Type ＝ Container

Destination Name ＝ MDBDemo Topic

Destination Type ＝ x.jms.Topic

其它不變。

7．Project－>Make ”MDBModule”, 編譯成功後，右鍵單擊左上角的MDBModule選擇Deploy Options for ”MDBModule.jar”－>Deploy，將其釋出至Weblogic。

建立客戶端：

以下是客戶端原始碼，儲存成TestClient.java加入工程後，選擇Run－>Run “TestClient.java” using defaults執行即可，可以在weblogic console視窗看到輸出。如果看不到輸出，重起weblogic試一試。

package mdbdemo;

 

import java..RemoteException;

import java.util.Properties;

 

import javax.jms.JMSException;

import javax.jms.Message;

import javax.jms.Session;

import javax.jms.TextMessage;

import javax.jms.Topic;

import javax.jms.TopicConnection;

import javax.jms.TopicConnectionFactory;

import javax.jms.Topiblisher;

import javax.jms.TopicSession;

 

 

 

import javax.ejb.CreateException;

import javax.ejb.RemoveException;

import javax.naming.Context;

import javax.naming.InitialContext;

import javax.naming.NamingException;

import javax.rmi.PortableRemote;

 

/**

 * This class illustrates calling a Message-Driven bean and publishing

 * quotes on a topic.

 *

 * @author Copyright (c) 1998-2002 by BEA Systems, Inc. All Rights Reserved.

 */

 

public class TestClient {

  static private String TOPIC_NAME = "MDBDemo Topic";

 

  private String m_url;

 

  private Context m_context;

  private TopicConnection m_topicConnection;

 

  public TestClient(String url)

  throws NamingException

  {

  m_url = url;

 

  try {

  //

  // Create a context

  //

  m_context = getInitialContext();

 

  //

  // Create the connection and start it

  //

  TopicConnectionFactory cf =

  (TopicConnectionFactory) m_context.lookup("MDBDemoCF");

  m_topicConnection = cf.createTopicConnection();

  m_topicConnection.start();

 

  }

  catch(Exception ex) {

  ex.printStackTrace();

  }

  }

 

 

  /**

  * Runs this example from the command line. Example:

  *

  * java examples.ejb20.message.Client "t3://localhost:7001"

  *

  * The parameters are optional, but if any are supplied,

  * they are interpreted in this order:

  *

  * @param url  URL such as "t3://localhost:7001" of Server

  */

  public static void main(String[] args) throws Exception {

 

  log("nBeginning message.Client...n");

 

  String url  = "t3://localhost:7001";

 

  TestClient client = null;

  try {

  client = new TestClient(url);

  } catch (NamingException ne) {

  System.exit(1);

  }

 

  try {

  client.example();

  }

  catch (Exception e) {

  log("There was an exception while creating and using the MDB.");

   log("This indicates that there was a problem communicating with the server: "+e);

  //e.printStackTrace();

  }

 

  log("nEnd message.Client...n");

  }

 

  /**

  * Runs this example.

  */

  public void example()

  throws RemoteException, JMSException, NamingException

  {

  Topic newTopic = null;

  TopicSession session = null;

  try {

  session =

  m_topicConnection.createTopicSession(false,  // non transacted

   Session.AUTO_ACKNOWLEDGE);

 

  newTopic = (Topic) m_context.lookup(TOPIC_NAME);

  }

  catch(NamingException ex) {

  newTopic = session.createTopic(TOPIC_NAME);

  m_context.bind(TOPIC_NAME, newTopic);

  }

 

  TopicPublisher sender = session.createPublisher(newTopic);

  TextMessage tm = session.createTextMessage();

  String[] quotes = new String[] {

  "BEAS 40 1/8", "SUNW 79 1/2", "IBM 82 1/4", "Hello !"

  };

  for (int i = 0; i < quotes.length; i++) {

  tm.setText(quotes[i]);

  sender.publish(tm);

  }

  }

 

 

  /**

  * Using a Properties object will work on 1.1.x and Java2

  * clients

  */

  private Context getInitialContext() throws NamingException {

 

  try {

  // Get an InitialContext

  Properties h = new Properties();

  h.put(Context.INITIAL_CONTEXT_FACTORY,

  "weblogic.jndi.WLInitialContextFactory");

  h.put(Context.PROVIDER_URL, m_url);

  return new InitialContext(h);

  }

  catch (NamingException ex) {

  log("We were unable to get a connection to the WebLogic server at "+m_url);

  log("Please make sure that the server is running.");

  throw ex;

  }

  }

 

  /**

  * This is the Java2 version to get an InitialContext.

  * This version relies on the existence of a jndi.properties file in

  * the application's classpath.

  *

  */

//  private static Context getInitialContext()

//  throws NamingException

//  {

//  return new InitialContext();

//  }

 

  private static void log(String s) {

  System.out.println(s);

  }

 

}

實戰5：JSP呼叫EJB

  （待續）