非常感谢http://my.oschina.net/xiaoxishan/blog?catalog=3270616
摘要
ActiveMQ学习笔记(四)http://my.oschina.net/xiaoxishan/blog/380446 中记录了如何使用原生的方式从ActiveMQ中收发消息。可以看出,每次收发消息都要写许多重复的代码,Spring 为我们提供了更为方便的方式,这就是Spring JMS。我们通过一个例子展开讲述。包括队列、主题消息的收发相关的Spring配置、代码、测试。
目录[-]
ActiveMQ学习笔记(四)http://my.oschina.net/xiaoxishan/blog/380446 中记录了如何使用原生的方式从ActiveMQ中收发消息。可以看出,每次收发消息都要写许多重复的代码,Spring 为我们提供了更为方便的方式,这就是Spring JMS。我们通过一个例子展开讲述。包括队列、主题消息的收发相关的Spring配置、代码、测试。
本例中,消息的收发都写在了一个工程里。
1.使用maven管理依赖包
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<
dependencies
>
<
dependency
>
<
groupId
>junit</
groupId
>
<
artifactId
>junit</
artifactId
>
<
version
>4.12</
version
>
<
scope
>test</
scope
>
</
dependency
>
<
dependency
>
<
groupId
>org.apache.activemq</
groupId
>
<
artifactId
>activemq-all</
artifactId
>
<
version
>5.11.0</
version
>
</
dependency
>
<
dependency
>
<
groupId
>org.springframework</
groupId
>
<
artifactId
>spring-jms</
artifactId
>
<
version
>4.1.4.RELEASE</
version
>
</
dependency
>
<
dependency
>
<
groupId
>org.springframework</
groupId
>
<
artifactId
>spring-test</
artifactId
>
<
version
>4.1.4.RELEASE</
version
>
</
dependency
>
</
dependencies
>
|
2.队列消息的收发
2.1Spring配置文件
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<?
xml
version
=
"1.0"
encoding
=
"UTF-8"
?>
<
beans
xmlns
=
"http://www.springframework.org/schema/beans"
xmlns:xsi
=
"http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<!-- 配置JMS连接工厂 -->
<
bean
id
=
"connectionFactory"
class
=
"org.apache.activemq.ActiveMQConnectionFactory"
>
<
property
name
=
"brokerURL"
value
=
"failover:(tcp://localhost:61616)"
/>
</
bean
>
<!-- 定义消息队列(Queue) -->
<
bean
id
=
"queueDestination"
class
=
"org.apache.activemq.command.ActiveMQQueue"
>
<!-- 设置消息队列的名字 -->
<
constructor-arg
>
<
value
>queue1</
value
>
</
constructor-arg
>
</
bean
>
<!-- 配置JMS模板(Queue),Spring提供的JMS工具类,它发送、接收消息。 -->
<
bean
id
=
"jmsTemplate"
class
=
"org.springframework.jms.core.JmsTemplate"
>
<
property
name
=
"connectionFactory"
ref
=
"connectionFactory"
/>
<
property
name
=
"defaultDestination"
ref
=
"queueDestination"
/>
<
property
name
=
"receiveTimeout"
value
=
"10000"
/>
</
bean
>
<!--queue消息生产者 -->
<
bean
id
=
"producerService"
class
=
"guo.examples.mq02.queue.ProducerServiceImpl"
>
<
property
name
=
"jmsTemplate"
ref
=
"jmsTemplate"
></
property
>
</
bean
>
<!--queue消息消费者 -->
<
bean
id
=
"consumerService"
class
=
"guo.examples.mq02.queue.ConsumerServiceImpl"
>
<
property
name
=
"jmsTemplate"
ref
=
"jmsTemplate"
></
property
>
</
bean
>
|
2.2消息生产者代码
从下面的代码可以出,使用Spring JMS,可以减少重复代码(接口类ProducerService代码省略)。
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package
guo.examples.mq02.queue;
import
javax.jms.Destination;
import
javax.jms.JMSException;
import
javax.jms.Message;
import
javax.jms.Session;
import
org.springframework.jms.core.JmsTemplate;
import
org.springframework.jms.core.MessageCreator;
public
class
ProducerServiceImpl
implements
ProducerService {
private
JmsTemplate jmsTemplate;
/**
* 向指定队列发送消息
*/
public
void
sendMessage(Destination destination,
final
String msg) {
System.out.println(
"向队列"
+ destination.toString() +
"发送了消息------------"
+ msg);
jmsTemplate.send(destination,
new
MessageCreator() {
public
Message createMessage(Session session)
throws
JMSException {
return
session.createTextMessage(msg);
}
});
}
/**
* 向默认队列发送消息
*/
public
void
sendMessage(
final
String msg) {
String destination = jmsTemplate.getDefaultDestination().toString();
System.out.println(
"向队列"
+destination+
"发送了消息------------"
+ msg);
jmsTemplate.send(
new
MessageCreator() {
public
Message createMessage(Session session)
throws
JMSException {
return
session.createTextMessage(msg);
}
});
}
public
void
setJmsTemplate(JmsTemplate jmsTemplate) {
this
.jmsTemplate = jmsTemplate;
}
}
|
2.3消息消费者代码
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package
guo.examples.mq02.queue;
import
javax.jms.Destination;
import
javax.jms.JMSException;
import
javax.jms.TextMessage;
import
org.springframework.jms.core.JmsTemplate;
public
class
ConsumerServiceImpl
implements
ConsumerService {
private
JmsTemplate jmsTemplate;
/**
* 接受消息
*/
public
void
receive(Destination destination) {
TextMessage tm = (TextMessage) jmsTemplate.receive(destination);
try
{
System.out.println(
"从队列"
+ destination.toString() +
"收到了消息:\t"
+ tm.getText());
}
catch
(JMSException e) {
e.printStackTrace();
}
}
public
void
setJmsTemplate(JmsTemplate jmsTemplate) {
this
.jmsTemplate = jmsTemplate;
}
}
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2.4队列消息监听
接受消息的时候,可以不用2.3节中的方式,Spring JMS同样提供了消息监听的模式,下面给出对应的配置和代码。
Spring配置
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<!-- 定义消息队列(Queue),我们监听一个新的队列,queue2 -->
<
bean
id
=
"queueDestination2"
class
=
"org.apache.activemq.command.ActiveMQQueue"
>
<!-- 设置消息队列的名字 -->
<
constructor-arg
>
<
value
>queue2</
value
>
</
constructor-arg
>
</
bean
>
<!-- 配置消息队列监听者(Queue),代码下面给出,只有一个onMessage方法 -->
<
bean
id
=
"queueMessageListener"
class
=
"guo.examples.mq02.queue.QueueMessageListener"
/>
<!-- 消息监听容器(Queue),配置连接工厂,监听的队列是queue2,监听器是上面定义的监听器 -->
<
bean
id
=
"jmsContainer"
class
=
"org.springframework.jms.listener.DefaultMessageListenerContainer"
>
<
property
name
=
"connectionFactory"
ref
=
"connectionFactory"
/>
<
property
name
=
"destination"
ref
=
"queueDestination2"
/>
<
property
name
=
"messageListener"
ref
=
"queueMessageListener"
/>
</
bean
>
|
监听类代码
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package
guo.examples.mq02.queue;
import
javax.jms.JMSException;
import
javax.jms.Message;
import
javax.jms.MessageListener;
import
javax.jms.TextMessage;
public
class
QueueMessageListener
implements
MessageListener {
//当收到消息时,自动调用该方法。
public
void
onMessage(Message message) {
TextMessage tm = (TextMessage) message;
try
{
System.out.println(
"ConsumerMessageListener收到了文本消息:\t"
+ tm.getText());
}
catch
(JMSException e) {
e.printStackTrace();
}
}
}
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3.主题消息收发
在使用Spring JMS的时候,主题(Topic)和队列消息的主要差异体现在JmsTemplate中"pubSubDomain"是否设置为True。如果为True,则是Topic;如果是false或者默认,则是queue。
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<
property
name
=
"pubSubDomain"
value
=
"true"
/>
|
3.1Spring配置
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<!-- 定义消息主题(Topic) -->
<
bean
id
=
"topicDestination"
class
=
"org.apache.activemq.command.ActiveMQTopic"
>
<
constructor-arg
>
<
value
>guo_topic</
value
>
</
constructor-arg
>
</
bean
>
<!-- 配置JMS模板(Topic),pubSubDomain="true"-->
<
bean
id
=
"topicJmsTemplate"
class
=
"org.springframework.jms.core.JmsTemplate"
>
<
property
name
=
"connectionFactory"
ref
=
"connectionFactory"
/>
<
property
name
=
"defaultDestination"
ref
=
"topicDestination"
/>
<
property
name
=
"pubSubDomain"
value
=
"true"
/>
<
property
name
=
"receiveTimeout"
value
=
"10000"
/>
</
bean
>
<!--topic消息发布者 -->
<
bean
id
=
"topicProvider"
class
=
"guo.examples.mq02.topic.TopicProvider"
>
<
property
name
=
"topicJmsTemplate"
ref
=
"topicJmsTemplate"
></
property
>
</
bean
>
<!-- 消息主题监听者 和 主题监听容器 可以配置多个,即多个订阅者 -->
<!-- 消息主题监听者(Topic) -->
<
bean
id
=
"topicMessageListener"
class
=
"guo.examples.mq02.topic.TopicMessageListener"
/>
<!-- 主题监听容器 (Topic) -->
<
bean
id
=
"topicJmsContainer"
class
=
"org.springframework.jms.listener.DefaultMessageListenerContainer"
>
<
property
name
=
"connectionFactory"
ref
=
"connectionFactory"
/>
<
property
name
=
"destination"
ref
=
"topicDestination"
/>
<
property
name
=
"messageListener"
ref
=
"topicMessageListener"
/>
</
bean
>
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3.2消息发布者
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package
guo.examples.mq02.topic;
import
javax.jms.Destination;
import
javax.jms.JMSException;
import
javax.jms.Message;
import
javax.jms.Session;
import
org.springframework.jms.core.JmsTemplate;
import
org.springframework.jms.core.MessageCreator;
public
class
TopicProvider {
private
JmsTemplate topicJmsTemplate;
/**
* 向指定的topic发布消息
*
* @param topic
* @param msg
*/
public
void
publish(
final
Destination topic,
final
String msg) {
topicJmsTemplate.send(topic,
new
MessageCreator() {
public
Message createMessage(Session session)
throws
JMSException {
System.out.println(
"topic name 是"
+ topic.toString()
+
",发布消息内容为:\t"
+ msg);
return
session.createTextMessage(msg);
}
});
}
public
void
setTopicJmsTemplate(JmsTemplate topicJmsTemplate) {
this
.topicJmsTemplate = topicJmsTemplate;
}
}
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3.3消息订阅者(监听)
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package
guo.examples.mq02.topic;
import
javax.jms.JMSException;
import
javax.jms.Message;
import
javax.jms.MessageListener;
import
javax.jms.TextMessage;
/**
*和队列监听的代码一样。
*/
public
class
TopicMessageListener
implements
MessageListener {
public
void
onMessage(Message message) {
TextMessage tm = (TextMessage) message;
try
{
System.out.println(
"TopicMessageListener \t"
+ tm.getText());
}
catch
(JMSException e) {
e.printStackTrace();
}
}
}
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4.测试
4.1 测试代码
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package
guo.examples.mq02;
import
javax.jms.Destination;
import
guo.examples.mq02.queue.ConsumerService;
import
guo.examples.mq02.queue.ProducerService;
import
guo.examples.mq02.topic.TopicProvider;
import
org.junit.Test;
import
org.junit.runner.RunWith;
import
org.springframework.beans.factory.annotation.Autowired;
import
org.springframework.beans.factory.annotation.Qualifier;
import
org.springframework.test.context.ContextConfiguration;
import
org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
/**
* 测试Spring JMS
*
* 1.测试生产者发送消息
*
* 2. 测试消费者接受消息
*
* 3. 测试消息监听
*
* 4.测试主题监听
*
*/
@RunWith
(SpringJUnit4ClassRunner.
class
)
// ApplicationContext context = new
// ClassPathXmlApplicationContext("applicationContext.xml");
@ContextConfiguration
(
"/applicationContext.xml"
)
public
class
SpringJmsTest {
/**
* 队列名queue1
*/
@Autowired
private
Destination queueDestination;
/**
* 队列名queue2
*/
@Autowired
private
Destination queueDestination2;
/**
* 主题 guo_topic
*/
@Autowired
@Qualifier
(
"topicDestination"
)
private
Destination topic;
/**
* 主题消息发布者
*/
@Autowired
private
TopicProvider topicProvider;
/**
* 队列消息生产者
*/
@Autowired
@Qualifier
(
"producerService"
)
private
ProducerService producer;
/**
* 队列消息生产者
*/
@Autowired
@Qualifier
(
"consumerService"
)
private
ConsumerService consumer;
/**
* 测试生产者向queue1发送消息
*/
@Test
public
void
testProduce() {
String msg =
"Hello world!"
;
producer.sendMessage(msg);
}
/**
* 测试消费者从queue1接受消息
*/
@Test
public
void
testConsume() {
consumer.receive(queueDestination);
}
/**
* 测试消息监听
*
* 1.生产者向队列queue2发送消息
*
* 2.ConsumerMessageListener监听队列,并消费消息
*/
@Test
public
void
testSend() {
producer.sendMessage(queueDestination2,
"Hello China~~~~~~~~~~~~~~~"
);
}
/**
* 测试主题监听
*
* 1.生产者向主题发布消息
*
* 2.ConsumerMessageListener监听主题,并消费消息
*/
@Test
public
void
testTopic()
throws
Exception {
topicProvider.publish(topic,
"Hello T-To-Top-Topi-Topic!"
);
}
}
|
4.2 测试结果
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topic name 是topic:
//guo_topic
,发布消息内容为: Hello T-To-Top-Topi-Topic!
TopicMessageListener
向队列queue:
//queue2
发送了消息------------Hello China~~~~~~~~~~~~~~~
ConsumerMessageListener收到了文本消息:
向队列queue:
//queue1
发送了消息------------Hello world!
从队列queue:
//queue1
收到了消息: Hello world!
|
5.代码地址
http://pan.baidu.com/s/1gdvPpWf