浅谈Springboot整合RocketMQ使用心得

昵称597197 2018-03-07

展开全文

一、阿里云官网---帮助文档

https://help.aliyun.com/document_detail/29536.html?spm=5176.doc29535.6.555.WWTIUh

https://help.aliyun.com/document_detail/29553.html

按照官网步骤，创建Topic、申请发布（生产者）、申请订阅（消费者）

二、代码

1、配置：

public class MqConfig {
  /**
   * 启动测试之前请替换如下 XXX 为您的配置
   */
  public static final String PUBLIC_TOPIC = "test";//公网测试
  public static final String PUBLIC_PRODUCER_ID = "PID_SCHEDULER";
  public static final String PUBLIC_CONSUMER_ID = "CID_SERVICE";
 
  public static final String ACCESS_KEY = "123";
  public static final String SECRET_KEY = "123";
  public static final String TAG = "";
  public static final String THREAD_NUM = "25";//消费端线程数
  /**
   * ONSADDR 请根据不同Region进行配置
   * 公网测试: http://onsaddr-internet.aliyun.com/rocketmq/nsaddr4client-internet
   * 公有云生产: http://onsaddr-internal.aliyun.com:8080/rocketmq/nsaddr4client-internal
   * 杭州金融云: http://jbponsaddr-internal.aliyun.com:8080/rocketmq/nsaddr4client-internal
   * 深圳金融云: http://mq4finance-sz.addr.aliyun.com:8080/rocketmq/nsaddr4client-internal
   */
  public static final String ONSADDR = "http://onsaddr-internal.aliyun.com:8080/rocketmq/nsaddr4client-internal";
}

ONSADDR 阿里云用公有云生产，测试用公网

不同的业务可以设置不同的tag，但是如果发送消息量大的话，建议新建TOPIC

2、生产者

方式1：

配置文件：producer.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www./dtd/spring-beans.dtd">
<beans>
  <bean id="producer" class="com.aliyun.openservices.ons.api.bean.ProducerBean"
     init-method="start" destroy-method="shutdown">
    <property name="properties">
      <map>
        <entry key="ProducerId" value="" /> <!-- PID,请替换 -->
        <entry key="AccessKey" value="" /> <!-- ACCESS_KEY,请替换 -->
        <entry key="SecretKey" value="" /> <!-- SECRET_KEY,请替换 -->
        <!--PropertyKeyConst.ONSAddr 请根据不同Region进行配置
         公网测试: http://onsaddr-internet.aliyun.com/rocketmq/nsaddr4client-internet
         公有云生产: http://onsaddr-internal.aliyun.com:8080/rocketmq/nsaddr4client-internal
         杭州金融云: http://jbponsaddr-internal.aliyun.com:8080/rocketmq/nsaddr4client-internal
         深圳金融云: http://mq4finance-sz.addr.aliyun.com:8080/rocketmq/nsaddr4client-internal -->
        <entry key="ONSAddr" value="http://onsaddr-internal.aliyun.com:8080/rocketmq/nsaddr4client-internal"/>
      </map>
    </property>
  </bean>
</beans>

启动方式1，在使用类的全局里设置：

//初始化生产者
  private ApplicationContext ctx;
  private ProducerBean producer;
 
  @Value("${producerConfig.enabled}")//开关，spring配置项，true为开启，false关闭
  private boolean producerConfigEnabled;
 
  @PostConstruct
  public void init(){
    if (true == producerConfigEnabled) {
      ctx = new ClassPathXmlApplicationContext("producer.xml");
      producer = (ProducerBean) ctx.getBean("producer");
    }
  }

PS：最近发现一个坑，如果producer用上面这种方式启动的话，一旦启动的多了，会造成fullGC，所以可以换成下面这种注解方式启动，在用到的地方手动start、shutdown

方式2：配置类（不需要xml）

@Configuration
public class ProducerBeanConfig {
 
  @Value("${openservices.ons.producerBean.producerId}")
  private String producerId;
 
  @Value("${openservices.ons.producerBean.accessKey}")
  private String accessKey;
 
  @Value("${openservices.ons.producerBean.secretKey}")
  private String secretKey;
 
  private ProducerBean producerBean;
 
  @Value("${openservices.ons.producerBean.ONSAddr}")
  private String ONSAddr;
 
  @Bean
  public ProducerBean oneProducer() {
    ProducerBean producerBean = new ProducerBean();
    Properties properties = new Properties();
    properties.setProperty(PropertyKeyConst.ProducerId, producerId);
    properties.setProperty(PropertyKeyConst.AccessKey, accessKey);
    properties.setProperty(PropertyKeyConst.SecretKey, secretKey);
    properties.setProperty(PropertyKeyConst.ONSAddr, ONSAddr);
 
    producerBean.setProperties(properties);
    return producerBean;
  }
}

PS：经过这次双11发现，以上2种方式在大数据量，多线程情况下都不太适用，性能很差，所以推荐用3

方式3：（不需要xml）

@Component
public class ProducerBeanSingleTon {
 
  @Value("${openservices.ons.producerBean.producerId}")
  private String producerId;
 
  @Value("${openservices.ons.producerBean.accessKey}")
  private String accessKey;
 
  @Value("${openservices.ons.producerBean.secretKey}")
  private String secretKey;
 
  @Value("${openservices.ons.producerBean.ONSAddr}")
  private String ONSAddr;
 
  private static Producer producer;
 
  private static class SingletonHolder {
    private static final ProducerBeanSingleTon INSTANCE = new ProducerBeanSingleTon();
  }
 
  private ProducerBeanSingleTon (){}
 
  public static final ProducerBeanSingleTon getInstance() {
    return SingletonHolder.INSTANCE;
  }
 
  @PostConstruct
  public void init(){
    // producer 实例配置初始化
    Properties properties = new Properties();
    //您在控制台创建的Producer ID
    properties.setProperty(PropertyKeyConst.ProducerId, producerId);
    // AccessKey 阿里云身份验证，在阿里云服务器管理控制台创建
    properties.setProperty(PropertyKeyConst.AccessKey, accessKey);
    // SecretKey 阿里云身份验证，在阿里云服务器管理控制台创建
    properties.setProperty(PropertyKeyConst.SecretKey, secretKey);
    //设置发送超时时间，单位毫秒
    properties.setProperty(PropertyKeyConst.SendMsgTimeoutMillis, "3000");
    // 设置 TCP 接入域名（此处以公共云生产环境为例）
    properties.setProperty(PropertyKeyConst.ONSAddr, ONSAddr);
    producer = ONSFactory.createProducer(properties);
    // 在发送消息前，必须调用start方法来启动Producer，只需调用一次即可
    producer.start();
  }
 
  public Producer getProducer(){
    return producer;
  }
}

spring配置

spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
 
consumerConfig.enabled = true
 
producerConfig.enabled = true #方式1：
 
scheduling.enabled = false
 
#方式2、3：rocketMQ \u516C\u7F51\u914D\u7F6E
openservices.ons.producerBean.producerId = pid
openservices.ons.producerBean.accessKey = 
openservices.ons.producerBean.secretKey = 
 
openservices.ons.producerBean.ONSAddr = 公网、杭州公有云生产

方式1投递消息代码：

try {
  String jsonC = JsonUtils.toJson(elevenMessage);
  Message message = new Message(MqConfig.TOPIC, MqConfig.TAG, jsonC.getBytes());
  SendResult sendResult = producer.send(message);
  if (sendResult != null) {
    logger.info(".Send mq message success!”;
 
  } else {
    logger.warn(".sendResult is null.........");
  }
  } catch (Exception e) {
     logger.warn("DoubleElevenAllPreService");
     Thread.sleep(1000);//如果有异常，休眠1秒
  }

方式2投递消息代码：（可以每发1000个启动/关闭一次）

   producerBean.start();
try {
   String jsonC = JsonUtils.toJson(elevenMessage);
   Message message = new Message(MqConfig.TOPIC, MqConfig.TAG, jsonC.getBytes());
   SendResult sendResult = producer.send(message);
   if (sendResult != null) {
     logger.info(".Send mq message success!”;
 
   } else {
     logger.warn(".sendResult is null.........");
   }
   } catch (Exception e) {
      logger.warn("DoubleElevenAllPreService");
      Thread.sleep(1000);//如果有异常，休眠1秒
   }
 
   producerBean.shutdown();

方式3：投递消息

try {
  String jsonC = JsonUtils.toJson(elevenMessage);
  Message message = new Message(MqConfig.TOPIC, MqConfig.TAG, jsonC.getBytes());
  Producer producer = ProducerBeanSingleTon.getInstance().getProducer();
  SendResult sendResult = producer.send(message);
  if (sendResult != null) {
    logger.info("DoubleElevenMidService.Send mq message success! Topic is:"”;
 
  } else {
    logger.warn("DoubleElevenMidService.sendResult is null.........");
  }
  } catch (Exception e) {
    logger.error("DoubleElevenMidService Thread.sleep 1 s___error is "+e.getMessage(), e);
    Thread.sleep(1000);//如果有异常，休眠1秒
  }

发送消息的代码一定要捕获异常，不然会重复发送。

这里的TOPIC用自己创建的，elevenMessage是要发送的内容，我这里是自己建的对象

3、消费者

配置启动类：

@Configuration
@ConditionalOnProperty(value = "consumerConfig.enabled", havingValue = "true", matchIfMissing = true)
public class ConsumerConfig {
 
  private Logger logger = LoggerFactory.getLogger(LoggerAppenderType.smsdist.name());
 
  @Bean
  public Consumer consumerFactory(){//不同消费者 这里不能重名
    Properties consumerProperties = new Properties();
    consumerProperties.setProperty(PropertyKeyConst.ConsumerId, MqConfig.CONSUMER_ID);
    consumerProperties.setProperty(PropertyKeyConst.AccessKey, MqConfig.ACCESS_KEY);
    consumerProperties.setProperty(PropertyKeyConst.SecretKey, MqConfig.SECRET_KEY);
    //consumerProperties.setProperty(PropertyKeyConst.ConsumeThreadNums,MqConfig.THREAD_NUM);
    consumerProperties.setProperty(PropertyKeyConst.ONSAddr, MqConfig.ONSADDR);
    Consumer consumer = ONSFactory.createConsumer(consumerProperties);
    consumer.subscribe(MqConfig.TOPIC, MqConfig.TAG, new DoubleElevenMessageListener());//new对应的监听器
    consumer.start();
    logger.info("ConsumerConfig start success.");
     
 
    return consumer;
 
  }
}

CID和ONSADDR一点要选对，用自己的，消费者线程数等可以在这里配置

创建消息监听器类，消费消息：

@Component
public class MessageListener implements MessageListener {
  private Logger logger = LoggerFactory.getLogger("remind");
 
  protected static ElevenReposity elevenReposity;
  @Resource
  public void setElevenReposity(ElevenReposity elevenReposity){
    MessageListener .elevenReposity=elevenReposity;
  }
 
 
  @Override
  public Action consume(Message message, ConsumeContext consumeContext) {
 
    if(message.getTopic().equals("自己的TOPIC")){//避免消费到其他消息 json转换报错
      try {
 
      byte[] body = message.getBody();
      String res = new String(body);
       
      //res 是生产者传过来的消息内容
 
        //业务代码
 
      }else{
        logger.warn("!");
      }
 
      } catch (Exception e) {
        logger.error("MessageListener.consume error:" + e.getMessage(), e);
      }
 
      logger.info("MessageListener.Receive message”);
      //如果想测试消息重投的功能,可以将Action.CommitMessage 替换成Action.ReconsumeLater
      return Action.CommitMessage;
    }else{
      logger.warn();
      return Action.ReconsumeLater;
    }
 
  }