说明:需结合ActiveMQ入门程序(下)
总体功能介绍:启动product与consumer项目,注册用户,查看邮件发送情况
- ActiveMQ入门程序(上)为product项目
- ActiveMQ入门程序(下)为consumer项目
功能介绍:
ActiveMQ入门程序(上): 用户注册,将记录插入数据库,之后将邮箱对象转JSON字符串,发送到消息队列。
1. 添加依赖包
<!--spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.14.RELEASE</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.47</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.12</version>
</dependency>
<!--消息队列-->
<dependency>
<groupId>org.apache.activemq</groupId>
<artifactId>activemq-all</artifactId>
<version>5.15.3</version>
</dependency>
<dependency>
<groupId>org.apache.activemq</groupId>
<artifactId>activemq-pool</artifactId>
<version>5.15.3</version>
</dependency>
2. 配置文件
activemq.properties
## ActiveMQ Config
activemq.brokerURL=tcp://localhost:61616
activemq.userName=zhangsan
activemq.password=123
activemq.pool.maxConnections=10
#queueName
activemq.queueName=mailqueue
spring-activemq.xml配置
--读取配置文件-->
<context:property-placeholder location="classpath:activemq-config.properties"></context:property-placeholder>
<!-- 使用第三方工厂 connectionFactory -->
<bean id="targetConnectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
<property name="brokerURL" value="${activemq.brokerURL}"/>
<!-- <property name="userName" value="${activemq.userName}"/>
<property name="password" value="${activemq.password}"/>-->
</bean>
<!-- ActiveMQ为我们提供了一个PooledConnectionFactory,通过往里面注入一个ActiveMQConnectionFactory
可以用来将Connection、Session和MessageProducer池化,这样可以大大的减少我们的资源消耗,要依赖于 activemq-pool包 -->
<bean id="pooledconnectionFactory" class="org.apache.activemq.pool.PooledConnectionFactory" destroy-method="stop">
<property name="connectionFactory" ref="targetConnectionFactory"/>
<property name="maxConnections" value="${activemq.pool.maxConnections}"/>
</bean>
<!-- Spring用于管理真正的ConnectionFactory的ConnectionFactory -->
<bean id="connectionFactory"
class="org.springframework.jms.connection.SingleConnectionFactory">
<!-- 目标ConnectionFactory对应真实的可以产生JMS Connection的ConnectionFactory -->
<property name="targetConnectionFactory" ref="pooledconnectionFactory" />
</bean>
<!--这个是目的地:mailQueue -->
<!-- 使用Queue方式 -->
<!-- <bean id="mailQueue" class="org.apache.activemq.command.ActiveMQQueue"/> -->
<!-- 使用Topic方式 -->
<bean id="mailQueue" class="org.apache.activemq.command.ActiveMQQueue">
<constructor-arg>
<value>${activemq.queueName}</value>
</constructor-arg>
</bean>
<!-- Spring提供的JMS工具类,它可以进行消息发送、接收等 -->
<bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
<property name="connectionFactory" ref="connectionFactory"/>
<property name="defaultDestination" ref="mailQueue"/>
</bean>
</beans>
applicationcontext.xml配置
<!--自动扫描-->
<context:component-scan base-package="net"/>
<!--导入mq的配置-->
<import resource="spring-activemq.xml"/>
springmvc-config.xml配置
<context:component-scan base-package="net.zjitc"/>
<!--注解自动扫描 使用默认的mapping和handler处理-->
<mvc:annotation-driven/>
web.xml配置
<!--spring bean的配置文件-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!--编码问题:字符集过滤器-->
<filter>
<filter-name>characterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--添加监听-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--配置mvc调度 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc-config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
3. 代码实现
实体类Mail定义
public class Mail {
/** 发件人 **/
private String from;
/** 收件人 **/
private String to;
/** 主题 **/
private String subject;
/** 邮件内容 **/
private String content;
MyProduct.java(用于发送消息)
@Service
public class MqProduct {
@Autowired
private JmsTemplate jmsTemplate;
public JmsTemplate getJmsTemplate() {
return jmsTemplate;
}
@Autowired
public void setJmsTemplate(JmsTemplate jmsTemplate) {
this.jmsTemplate = jmsTemplate;
}
/**
* <B>方法名称:</B>发送邮件信息对象<BR>
* <B>概要说明:</B>发送邮件信息对象<BR>
*
* @param mail
*/
public void sendMessage(final Mail mail) {
jmsTemplate.send(new MessageCreator() {
public Message createMessage(Session session) throws JMSException {
return session.createTextMessage(JSONObject.toJSONString(mail));
}
});
}
}
UserService.java(向数据库中插入记录,并将mail信息放入消息队列)
@Service
public class UserService {
@Autowired
MqProduct mqProduct;
public void insert(User user){
//1.插入数据库
//2.发送邮件消息放入队列
Mail mail = new Mail();
mail.setTo(user.getEmail());
mail.setSubject("邮箱激活");
mail.setContent("hi,this is a message");
mqProduct.sendMessage(mail);
}
}
UserController.java及register.jsp页面代码略
4. 测试
运行web项目,注册用户,打开http://localhost:8161/admin/ 查看消息队列。