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基于rabbitmq实战4.2章节发送即忘模型,书上是使用PiPa库完成,这里使用java实现package com.rayootech.rabbitmq.demo.inaction.alertwarning; import com.rabbitmq.client.Channel; import com.rabbitmq.client.Connection; import com.rabbitmq.client.ConnectionFactory; public class AlertWarningProducer { private static final String EXCHANGE_NAME = "alerts"; private static final String ROUTING_KEY = "critical.alert"; public static void main(String[] argv) { Connection connection = null; Channel channel = null; try { ConnectionFactory factory = new ConnectionFactory(); factory.setHost("rabbitmq128"); factory.setUsername("admin"); factory.setPassword("admin"); factory.setPort(5672); connection = factory.newConnection(); channel = connection.createChannel(); channel.exchangeDeclare(EXCHANGE_NAME,"topic",true); String message = "critical content!!!"; channel.basicPublish(EXCHANGE_NAME,ROUTING_KEY,null,message.getBytes()); System.out.println(" [x] Sent '" + ROUTING_KEY + "':'" + message + "'"); } catch (Exception e) { e.printStackTrace(); } finally { if (connection != null) { try { connection.close(); } catch (Exception ignore) {} } } } }
import com.rabbitmq.client.*; import javax.mail.*; import javax.mail.Message.RecipientType; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; import java.io.IOException; import java.util.Properties; import java.util.concurrent.TimeoutException; public class AlertWarningConsumer { private final static String EMAIL_RECIPIENTS="********@163.com";//接收者邮箱 private final static String EMAIL_SENDER="********@163.com";//发送者邮箱 private final static String EXCHANGE="alerts";//topic类型交换器 private final static String TYPE="topic"; private final static String QUEUE1="critical"; private final static String QUEUE2="rate_limt"; private final static String ROUTING_KEY1="critical.*"; private final static String ROUTING_KEY2="*.rate_limt"; /** * * @param recipients 接收人 * @param subject 发送主题 * @param msg 发送消息内容 * @throws IOException * @throws MessagingException */ public static void sendEmail(String recipients,String subject,Object msg) throws IOException,MessagingException { final Properties props = new Properties(); /* * 可用的属性: mail.store.protocol / mail.transport.protocol / mail.host / * mail.user / mail.from */ // 表示SMTP发送邮件,需要进行身份验证 props.put("mail.smtp.auth","true"); props.put("mail.smtp.host","smtp.163.com"); // 发件人的账号 props.put("mail.user",EMAIL_SENDER); // 访问SMTP服务时需要提供的密码 props.put("mail.password","*******"); // 构建授权信息,用于进行SMTP进行身份验证 Authenticator authenticator = new Authenticator() { @Override protected PasswordAuthentication getPasswordAuthentication() { // 用户名、密码 String userName = props.getProperty("mail.user"); String password = props.getProperty("mail.password"); return new PasswordAuthentication(userName,password); } }; // 使用环境属性和授权信息,创建邮件会话 Session mailSession = Session.getInstance(props,authenticator); // 创建邮件消息 MimeMessage message = new MimeMessage(mailSession); // 设置发件人 InternetAddress form = new InternetAddress( props.getProperty("mail.user")); message.setFrom(form); // 设置收件人 InternetAddress to = new InternetAddress(recipients); message.setRecipient(RecipientType.TO,to); // 设置邮件标题 message.setSubject(subject); // 设置邮件的内容体{"message":"告警消息邮件发送"} message.setContent(msg,"application/json;charset=UTF-8"); // 发送邮件 Transport.send(message); } public static void main(String[] args) { ConnectionFactory factory = new ConnectionFactory(); Connection connection = null; try { factory.setPort(5672); factory.setHost("rabbitmq128"); factory.setUsername("admin"); factory.setPassword("admin"); connection = factory.newConnection(); //创建连接 final Channel channel = connection.createChannel(); //声明交换器队列绑定等信息 channel.exchangeDeclare(EXCHANGE,TYPE,true); channel.queueDeclare(QUEUE1,false,null); channel.queueBind(QUEUE1,EXCHANGE,ROUTING_KEY1); channel.queueDeclare(QUEUE2,null); channel.queueBind(QUEUE2,ROUTING_KEY2); Consumer rate_limit_notify = new DefaultConsumer(channel){ @Override public void handleDelivery(String consumerTag,Envelope envelope,AMQP.BasicProperties properties,byte[] body) throws IOException { String subject = "rate_limit Alert"; String msg = new String(body,"UTF-8"); try { sendEmail(EMAIL_RECIPIENTS,subject,msg); } catch (MessagingException e) { e.printStackTrace(); } System.out.println("send alert E-mail!Alert text:Recipients: " + EMAIL_RECIPIENTS+" subject: "+subject); channel.basicAck(envelope.getDeliveryTag(),false); } }; Consumer critical_notify = new DefaultConsumer(channel){ @Override public void handleDelivery(String consumerTag,byte[] body) throws IOException { String subject = "Critical Alert"; String msg = new String(body,false); } }; //消息消费 channel.basicConsume(QUEUE1,"critical",critical_notify); channel.basicConsume(QUEUE2,"rate_limit",rate_limit_notify); } catch (IOException e) { e.printStackTrace(); } catch (TimeoutException e) { e.printStackTrace(); } } }
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