環境配置說明
Jboss4.2.3
Java ee 5
MySql5.0
安裝jdk,我的目錄為C:\Sun\SDK
安裝jboss.我的目錄為D:\jboss4.2.3
安裝mysql
配置環境變量JBOSS_HOME D:\jboss4.2.3
配置環境變量 JAVA_HOME C:\Sun\SDK\jdk
JBOSS的JMS配置
由于沒有用到集群所以用JBOSS的default應用即可。
1、配置MySQL數據庫的JNDI
將MySQL數據庫驅動拷到default\lib下JBOSS沒有自帶MySQL的數據庫驅動。
在D:\jboss4.2.3\docs\examples\jca 下的文件夾下面有很多不同數據庫引用的數
據源定義模板。將其中的 mysql-ds.xml 文件Copy到你使用的服務器下如 D:\ jboss4.2
.3\server\default\deploy。
修改 mysql-ds.xml 文件的內容使之能通過JDBC正確訪問你的MySQL數據庫如下
<?xml version="1.0" encoding="UTF-8"?>
<datasources>
<local-tx-datasource>
<jndi-name>MySqlDS</jndi-name>

<connection-url> jdbc:mysql://localhost:3306/test</connection-url>
<driver-class>com.mysql.jdbc.Driver</driver-class>
<user-name>root</user-name>
<password>rootpassword</password>
<exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MyS
QLExceptionSorter</exception-sorter-class-name>
<metadata>
<type-mapping>mySQL</type-mapping>
</metadata>
</local-tx-datasource>
</datasources>
這里定義了一個名為MySqlDS的數據源其參數包括JDBC的URL 驅動類名用戶名
及密碼等。
通過配置后就可以通過JNDI名java:MySqlDS 訪問到配置的Mysql數據庫。
2、配置JBOSS的JMS環境
將D:\jboss4.2.3\docs\examples\jms下的mysql-jdbc2-service.xml拷到D:\jbos
s4.2.3\server\default\deploy\jms 下。并將數據庫DataSourceBinding 改成name=M
ySqlDS連到你的MySql數據庫
將D:\jboss4.2.3\server\default\deploy\jms 目錄下的hsqldb-jdbc-state-servic
e文件改名為mysql-jdbc-state-service.xml 并將<depends optional-attribute-name
="ConnectionManager">jboss.jca:service=DataSourceBinding,name=MySqlDS<
/depends>
該成name=MySqlDS用于連接你的MySql的數據庫。
啟動JBOSS后在控制臺將會看到類似如下的信息就表示默認的JMS的jndi名已經綁定了
。JMS的配置成功了。
10:14:42,343 INFO [ConnectionFactoryBindingService] Bound ConnectionM
anager 'jboss.jca:service=DataSourceBinding,name=DefaultDS' to JNDI name 'j
ava:DefaultDS'
10:14:42,984 INFO [ConnectionFactoryBindingService] Bound ConnectionM
anager 'jboss.jca:service=ConnectionFactoryBinding,name=JmsXA' to JNDI nam
e 'java:JmsXA'
10:14:43,171 INFO [ConnectionFactoryBindingService] Bound ConnectionM
anager 'jboss.jca:service=DataSourceBinding,name=MySqlDS' to JNDI name 'ja
va:MySqlDS'
10:14:43,968 INFO [A] Bound to JNDI name: queue/A
10:14:44,000 INFO [B] Bound to JNDI name: queue/B
10:14:44,000 INFO [C] Bound to JNDI name: queue/C
10:14:44,000 INFO [D] Bound to JNDI name: queue/D
10:14:44,015 INFO [ex] Bound to JNDI name: queue/ex
10:14:44,046 INFO [testTopic] Bound to JNDI name: topic/testTopic
10:14:44,046 INFO [securedTopic] Bound to JNDI name: topic/securedTopi
c
10:14:44,062 INFO [testDurableTopic] Bound to JNDI name: topic/testDura
bleTopic
10:14:44,062 INFO [testQueue] Bound to JNDI name: queue/testQueue
10:14:44,140 INFO [myQueue] Bound to JNDI name: queue/myQueue
10:14:44,203 INFO [UILServerILService] JBossMQ UIL service available at :
/127.0.0.1:8093
連接到MySQL數據庫也可以看到默認的建了幾個以jms_開頭的數據表。用語保存jm
s的用戶信息和持久化消息。
JBOSS的JMS實例
JBOSS的JMS環境建立好了以后我們就可以寫幾個發送接受JMS的程序來驗證一下。
當你發送一個消息你不能直接發送到對此消息感興趣的接受者。而是你發送到一個目的
地。對此消息感興趣的接受者必須連接到目的地得到此消息或在目的地設置訂閱。
在JMS中有兩種域topics 和queues 。
*一個消息發送到一個topics 可以有多個客戶端。用topic發布允許一對多或多對多
通訊通道。消息的產生者被叫做publisher, 消息接受者叫做subscriber。
*queue 是另外一種方式僅僅允許一個消息傳送給一個客戶。一個發送者將消息放在消
息隊列中接受者從隊列中抽取并得到消息消息就會在隊列中消失。第一個接受者抽取并得
到消息后其他人就不能在得到它。
為了能發送和接收消息必須得到一個JMS連接。該連接是使用JMS Provider得到連接
的在得到連接之后建立一個會話(Session)。然后再建立publisher/sender 來發送消息
或subscriber/receiver來接收消息。
運行時如果使用topic 那么publisher 或subscriber 通過一個topic來關聯如果使用
queue 則sender 或receiver通過queue來關聯起來。
通常在JMS框架中運轉的方法如下
(1) 得到一個JNDI初始化上下文(Context)
(2) 根據上下文來查找一個連接工廠TopicConnectFactory/ QueueConnectionFacto
ry (有兩種連接工廠根據是topic/queue來使用相應的類型)
(3) 從連接工廠得到一個連接(Connect 有兩種[TopicConnection/ QueueConnectio
n]);
(4) 通過連接來建立一個會話(Session);
(5) 查找目的地(Topic/ Queue);
(6) 根據會話以及目的地來建立消息制造者(TopicPublisher/QueueSender)和消費者(
TopicSubscriber/ QueueReceiver).
為了得到一個連接和得到一個目的地用來關聯publisher/sender 或subscriber/recei
ver 必須用provider-specific參數。
在D:\jboss4.2.3\server\default\deploy\jms下的jbossmq-destinations-service.
xml是在配置JMS目的地的xml文件。在文件中已經存在幾個缺省的目的地所以你比較容易
明白怎樣增加到文件中
1、 topics例子
package com.msg;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.jms.TopicConnectionFactory;
import javax.jms.TopicConnection;
import javax.jms.TopicSession;
import javax.jms.TopicPublisher;
import javax.jms.Topic;
import javax.jms.TextMessage;
import javax.jms.Session;
import javax.jms.JMSException;
import java.util.Hashtable;
public class HelloPublisher {
TopicConnection topicConnection;
TopicSession topicSession;
TopicPublisher topicPublisher;
Topic topic;
public HelloPublisher(String factoryJNDI, String topicJNDI)
throws JMSException, NamingException {
Hashtable props = new Hashtable();
props.put(Context.INITIAL_CONTEXT_FACTORY,
"org.jnp.interfaces.NamingContextFactory");
props.put(Context.PROVIDER_URL, "localhost:1099");
props.put("java.naming.rmi.security.manager", "yes");
props.put(Context.URL_PKG_PREFIXES, "org.jboss.naming");
Context context = new InitialContext(props);
TopicConnectionFactory topicFactory = (TopicConnectionFactory) c
ontext
.lookup(factoryJNDI);
topicConnection = topicFactory.createTopicConnection();
topicSession = topicConnection.createTopicSession(false,
Session.AUTO_ACKNOWLEDGE);
topic = (Topic) context.lookup(topicJNDI);
topicPublisher = topicSession.createPublisher(topic);
}
public void publish(String msg) throws JMSException {
TextMessage message = topicSession.createTextMessage();
message.setText(msg);
topicPublisher.publish(topic, message);
}
public void close() throws JMSException {
topicSession.close();
topicConnection.close();
}
public static void main(String[] args) {
try {
HelloPublisher publisher = new HelloPublisher("ConnectionFa
ctory",
"topic/testTopic");
for (int i = 1; i < 11; i++) {
String msg = "Hello World no. " + i;
System.out.println("Publishing message: " + msg);
publisher.publish(msg);
}
publisher.close();
} catch (Exception ex) {
System.err
.println("An exception occurred while testing HelloP
ublisher25: "
+ ex);
ex.printStackTrace();
}
}
}
package com.msg;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.jms.TopicConnectionFactory;
import javax.jms.TopicConnection;
import javax.jms.TopicSession;
import javax.jms.TopicSubscriber;
import javax.jms.Topic;
import javax.jms.Message;
import javax.jms.TextMessage;
import javax.jms.Session;
import javax.jms.MessageListener;
import javax.jms.JMSException;
public class HelloSubscriber implements MessageListener {
TopicConnection topicConnection;
TopicSession topicSession;
TopicSubscriber topicSubscriber;
Topic topic;
public HelloSubscriber(String factoryJNDI, String topicJNDI)
throws JMSException, NamingException {
Context context = new InitialContext();
TopicConnectionFactory topicFactory = (TopicConnectionFactory) c
ontext
.lookup(factoryJNDI);
topicConnection = topicFactory.createTopicConnection();
topicSession = topicConnection.createTopicSession(false,Session.AUTO_ACKNOWLEDGE);
topic = (Topic) context.lookup(topicJNDI);
topicSubscriber = topicSession.createSubscriber(topic);
topicSubscriber.setMessageListener(this);
System.out.println("HelloSubscriber subscribed to topic: " + topic
JNDI);
topicConnection.start();
}
public void onMessage(Message m) {
try {
String msg = ((TextMessage) m).getText();
System.out.println("HelloSubscriber got message: " + msg);
} catch (JMSException ex) {
System.err.println("Could not get text message: " + ex);
ex.printStackTrace();
}
}
public void close() throws JMSException {
topicSession.close();
topicConnection.close();
}
public static void main(String[] args) {
try {
HelloSubscriber subscriber = new HelloSubscriber(
"TopicConnectionFactory", "topic/testTopic");
} catch (Exception ex) {
System.err.println("An exception occurred while testing HelloS
ubscriber: "
+ ex);
ex.printStackTrace();
}
}
}
2、 queues 例子
package com.msg;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueConnection;
import javax.jms.QueueSession;
import javax.jms.QueueSender;
import javax.jms.Queue;
import javax.jms.TextMessage;
import javax.jms.Session;
import javax.jms.JMSException;
import java.util.Hashtable;
public class HelloQueue {
QueueConnection queueConnection;
QueueSession queueSession;
QueueSender queueSender;
Queue queue;
public HelloQueue(String factoryJNDI, String topicJNDI)throws JMSException, NamingException {
Hashtable props = new Hashtable();
props.put(Context.INITIAL_CONTEXT_FACTORY,
"org.jnp.interfaces.NamingContextFactory");
props.put(Context.PROVIDER_URL, "localhost:1099");
props.put("java.naming.rmi.security.manager", "yes");
props.put(Context.URL_PKG_PREFIXES, "org.jboss.naming");
Context context = new InitialContext(props);
QueueConnectionFactory queueFactory = (QueueConnectionFactory)
context
.lookup(factoryJNDI);
queueConnection = queueFactory.createQueueConnection();
queueSession = queueConnection.createQueueSession(false,
Session.AUTO_ACKNOWLEDGE);
queue = (Queue) context.lookup(topicJNDI);
queueSender = queueSession.createSender(queue);
}
public void send(String msg) throws JMSException {
TextMessage message = queueSession.createTextMessage();
message.setText(msg);
queueSender.send(queue, message);
}
public void close() throws JMSException {
queueSession.close();
queueConnection.close();
}
public static void main(String[] args) {
try {
HelloPublisher publisher = new HelloPublisher("ConnectionFacto
ry",
"topic/testTopic");
for (int i = 1; i < 11; i++) {
String msg = "Hello World no. " + i;
System.out.println("Publishing message: " + msg);
publisher.publish(msg);
}
publisher.close();
} catch (Exception ex) {
System.err
.println("An exception occurred while testing HelloPub
lisher25: "
+ ex);
ex.printStackTrace();
}
}
}