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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
< 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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
<? 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)。
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
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: " + tm.getText()); } catch (JMSException e) { e.printStackTrace(); } } public void setJmsTemplate(JmsTemplate jmsTemplate) { this .jmsTemplate = jmsTemplate; } } |
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
<!-- 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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
|
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: " + tm.getText()); } catch (JMSException e) { e.printStackTrace(); } } } |
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。
1
|
< property name = "pubSubDomain" value = "true" /> |
3.1Spring配置
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
<!-- 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 > |
3.2消息发布者
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
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: " + msg); return session.createTextMessage(msg); } }); } public void setTopicJmsTemplate(JmsTemplate topicJmsTemplate) { this .topicJmsTemplate = topicJmsTemplate; } } |
3.3消息订阅者(监听)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
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 " + tm.getText()); } catch (JMSException e) { e.printStackTrace(); } } } |
4.测试
4.1 测试代码
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
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
1
2
3
4
5
6
|
topic name 是topic: //guo_topic ,发布消息内容为: Hello T-To-Top-Topi-Topic! TopicMessageListener Hello T-To-Top-Topi-Topic! 向队列queue: //queue2 发送了消息------------Hello China~~~~~~~~~~~~~~~ ConsumerMessageListener收到了文本消息: Hello China~~~~~~~~~~~~~~~ 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