RocketMQ的使用

1 在resources目录下创建config目录，新建文件rocketmq.properties文件

# 指定namesrv地址
suning.rocketmq.namesrvAddr=localhost:9876

#生产者group名称
suning.rocketmq.producerGroupName=user_group

#事务生产者group名称
suning.rocketmq.transactionProducerGroupName=order_transaction

#消费者group名称
suning.rocketmq.consumerGroupName=user_consumer_group

#生产者实例名称
suning.rocketmq.producerInstanceName=user_producer_instance

#消费者实例名称
suning.rocketmq.consumerInstanceName=user_consumer_instance

#事务生产者实例名称
suning.rocketmq.producerTranInstanceName=user_producer_transacition

#一次最大消费多少数量消息
suning.rocketmq.consumerBatchMaxSize=1

#广播消费
suning.rocketmq.consumerBroadcasting=false

#消费的topic：tag
suning.rocketmq.subscribe[0]=user-topic:white

#启动的时候是否消费历史记录
suning.rocketmq.enableHistoryConsumer=false

#启动顺序消费
suning.rocketmq.enableOrderConsumer=false

2 新建properties文件读取类

package com.test.domi.config;

import java.util.ArrayList;
import java.util.List;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;

/**
 * @Author 18011618
 * @Date 19:31 2018/7/18
 * @Function 读取配置文件信息
 */
@PropertySource("classpath:config/rocketmq.properties")
@ConfigurationProperties(prefix = "suning.rocketmq")
@Configuration
public class RocketMQProperties {
    private String namesrvAddr;
    private String producerGroupName;
    private String transactionProducerGroupName;
    private String consumerGroupName;
    private String producerInstanceName;
    private String consumerInstanceName;
    private String producerTranInstanceName;
    private int consumerBatchMaxSize;
    private boolean consumerBroadcasting;
    private boolean enableHistoryConsumer;
    private boolean enableOrderConsumer;
    private List<String> subscribe = new ArrayList<String>();

    public String getNamesrvAddr() {
        return namesrvAddr;
    }

    public void setNamesrvAddr(String namesrvAddr) {
        this.namesrvAddr = namesrvAddr;
    }

    public String getProducerGroupName() {
        return producerGroupName;
    }

    public void setProducerGroupName(String producerGroupName) {
        this.producerGroupName = producerGroupName;
    }

    public String getTransactionProducerGroupName() {
        return transactionProducerGroupName;
    }

    public void setTransactionProducerGroupName(String transactionProducerGroupName) {
        this.transactionProducerGroupName = transactionProducerGroupName;
    }

    public String getConsumerGroupName() {
        return consumerGroupName;
    }

    public void setConsumerGroupName(String consumerGroupName) {
        this.consumerGroupName = consumerGroupName;
    }

    public String getProducerInstanceName() {
        return producerInstanceName;
    }

    public void setProducerInstanceName(String producerInstanceName) {
        this.producerInstanceName = producerInstanceName;
    }

    public String getConsumerInstanceName() {
        return consumerInstanceName;
    }

    public void setConsumerInstanceName(String consumerInstanceName) {
        this.consumerInstanceName = consumerInstanceName;
    }

    public String getProducerTranInstanceName() {
        return producerTranInstanceName;
    }

    public void setProducerTranInstanceName(String producerTranInstanceName) {
        this.producerTranInstanceName = producerTranInstanceName;
    }

    public int getConsumerBatchMaxSize() {
        return consumerBatchMaxSize;
    }

    public void setConsumerBatchMaxSize(int consumerBatchMaxSize) {
        this.consumerBatchMaxSize = consumerBatchMaxSize;
    }

    public boolean isConsumerBroadcasting() {
        return consumerBroadcasting;
    }

    public void setConsumerBroadcasting(boolean consumerBroadcasting) {
        this.consumerBroadcasting = consumerBroadcasting;
    }

    public boolean isEnableHistoryConsumer() {
        return enableHistoryConsumer;
    }

    public void setEnableHistoryConsumer(boolean enableHistoryConsumer) {
        this.enableHistoryConsumer = enableHistoryConsumer;
    }

    public boolean isEnableOrderConsumer() {
        return enableOrderConsumer;
    }

    public void setEnableOrderConsumer(boolean enableOrderConsumer) {
        this.enableOrderConsumer = enableOrderConsumer;
    }

    public List<String> getSubscribe() {
        return subscribe;
    }

    public void setSubscribe(List<String> subscribe) {
        this.subscribe = subscribe;
    }

    @Override
    public String toString() {
        return "RocketMQProperties{" +
                "namesrvAddr='" + namesrvAddr + '\'' +
                ", producerGroupName='" + producerGroupName + '\'' +
                ", transactionProducerGroupName='" + transactionProducerGroupName + '\'' +
                ", consumerGroupName='" + consumerGroupName + '\'' +
                ", producerInstanceName='" + producerInstanceName + '\'' +
                ", consumerInstanceName='" + consumerInstanceName + '\'' +
                ", producerTranInstanceName='" + producerTranInstanceName + '\'' +
                ", consumerBatchMaxSize=" + consumerBatchMaxSize +
                ", consumerBroadcasting=" + consumerBroadcasting +
                ", enableHistoryConsumer=" + enableHistoryConsumer +
                ", enableOrderConsumer=" + enableOrderConsumer +
                ", subscribe=" + subscribe +
                '}';
    }
}

3.加载properties文件

package com.test.domi.config;

import javax.annotation.PostConstruct;

import groovy.util.logging.Slf4j;
import org.apache.rocketmq.client.consumer.DefaultMQPushConsumer;
import org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyContext;
import org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyStatus;
import org.apache.rocketmq.client.consumer.listener.ConsumeOrderlyContext;
import org.apache.rocketmq.client.consumer.listener.ConsumeOrderlyStatus;
import org.apache.rocketmq.client.consumer.listener.MessageListenerConcurrently;
import org.apache.rocketmq.client.consumer.listener.MessageListenerOrderly;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.client.producer.DefaultMQProducer;
import org.apache.rocketmq.client.producer.TransactionMQProducer;
import org.apache.rocketmq.common.message.MessageExt;
import org.apache.rocketmq.common.protocol.heartbeat.MessageModel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.List;
import java.util.stream.Collectors;
/**
 * @Author 18011618
 * @Date 19:36 2018/7/18
 * @Function 通过使用指定的文件读取类 来加载配置文件到字段中
 */
@Configuration
@EnableConfigurationProperties(RocketMQProperties.class)
@Slf4j
public class RocketMQConfiguration {

    @Autowired
    private RocketMQProperties rocketMQProperties;

    //事件监听
    @Autowired
    private ApplicationEventPublisher publisher = null;

    private static boolean isFirstSub = true;

    private static long startTime = System.currentTimeMillis();
    private static Logger log = LoggerFactory.getLogger(RocketMQConfiguration.class);

    /**
     * 容器初始化的时候 打印参数
     */
    @PostConstruct
    public void init() {
        System.err.println(rocketMQProperties.getNamesrvAddr());
        System.err.println(rocketMQProperties.getProducerGroupName());
        System.err.println(rocketMQProperties.getConsumerBatchMaxSize());
        System.err.println(rocketMQProperties.getConsumerGroupName());
        System.err.println(rocketMQProperties.getConsumerInstanceName());
        System.err.println(rocketMQProperties.getProducerInstanceName());
        System.err.println(rocketMQProperties.getProducerTranInstanceName());
        System.err.println(rocketMQProperties.getTransactionProducerGroupName());
        System.err.println(rocketMQProperties.isConsumerBroadcasting());
        System.err.println(rocketMQProperties.isEnableHistoryConsumer());
        System.err.println(rocketMQProperties.isEnableOrderConsumer());
        System.out.println(rocketMQProperties.getSubscribe().get(0));
    }

    /**
     * 创建普通消息发送者实例
     * @return
     * @throws MQClientException
     */
    @Bean
    public DefaultMQProducer defaultProducer() throws MQClientException {
        DefaultMQProducer producer = new DefaultMQProducer(
                rocketMQProperties.getProducerGroupName());
        producer.setNamesrvAddr(rocketMQProperties.getNamesrvAddr());
        producer.setInstanceName(rocketMQProperties.getProducerInstanceName());
        producer.setVipChannelEnabled(false);
        producer.setRetryTimesWhenSendAsyncFailed(10);
        producer.start();
        log.info("rocketmq producer server is starting....");
        return producer;
    }

    /**
     * 创建支持消息事务发送的实例
     * @return
     * @throws MQClientException
     */
    @Bean
    public TransactionMQProducer transactionProducer() throws MQClientException {
        TransactionMQProducer producer = new TransactionMQProducer(
                rocketMQProperties.getTransactionProducerGroupName());
        producer.setNamesrvAddr(rocketMQProperties.getNamesrvAddr());
        producer.setInstanceName(rocketMQProperties
                .getProducerTranInstanceName());
        producer.setRetryTimesWhenSendAsyncFailed(10);
        // 事务回查最小并发数
        producer.setCheckThreadPoolMinSize(2);
        // 事务回查最大并发数
        producer.setCheckThreadPoolMaxSize(2);
        // 队列数
        producer.setCheckRequestHoldMax(2000);
        producer.start();
        log.info("rocketmq transaction producer server is starting....");
        return producer;
    }

    /**
     * 创建消息消费的实例
     * @return
     * @throws MQClientException
     */
    @Bean
    public DefaultMQPushConsumer pushConsumer() throws MQClientException {
        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer(
                rocketMQProperties.getConsumerGroupName());
        consumer.setNamesrvAddr(rocketMQProperties.getNamesrvAddr());
        consumer.setInstanceName(rocketMQProperties.getConsumerInstanceName());

        //判断是否是广播模式
        if (rocketMQProperties.isConsumerBroadcasting()) {
            consumer.setMessageModel(MessageModel.BROADCASTING);
        }
        //设置批量消费
        consumer.setConsumeMessageBatchMaxSize(rocketMQProperties
                .getConsumerBatchMaxSize() == 0 ? 1 : rocketMQProperties
                .getConsumerBatchMaxSize());

        //获取topic和tag
        List<String> subscribeList = rocketMQProperties.getSubscribe();
        for (String sunscribe : subscribeList) {
            consumer.subscribe(sunscribe.split(":")[0], sunscribe.split(":")[1]);
        }

        // 顺序消费
        if (rocketMQProperties.isEnableOrderConsumer()) {
            consumer.registerMessageListener(new MessageListenerOrderly() {
                @Override
                public ConsumeOrderlyStatus consumeMessage(
                        List<MessageExt> msgs, ConsumeOrderlyContext context) {
                    try {
                        context.setAutoCommit(true);
                        msgs = filterMessage(msgs);
                        if (msgs.size() == 0)
                            return ConsumeOrderlyStatus.SUCCESS;
                        publisher.publishEvent(new MessageEvent(msgs, consumer));
                    } catch (Exception e) {
                        e.printStackTrace();
                        return ConsumeOrderlyStatus.SUSPEND_CURRENT_QUEUE_A_MOMENT;
                    }
                    return ConsumeOrderlyStatus.SUCCESS;
                }
            });
        }
        // 并发消费
        else {

            consumer.registerMessageListener(new MessageListenerConcurrently() {

                @Override
                public ConsumeConcurrentlyStatus consumeMessage(
                        List<MessageExt> msgs,
                        ConsumeConcurrentlyContext context) {
                    try {
                        //过滤消息
                        msgs = filterMessage(msgs);
                        if (msgs.size() == 0)
                            return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
                        publisher.publishEvent(new MessageEvent(msgs, consumer));
                    } catch (Exception e) {
                        e.printStackTrace();
                        return ConsumeConcurrentlyStatus.RECONSUME_LATER;
                    }

                    return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
                }
            });
        }
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    Thread.sleep(5000);

                    try {
                        consumer.start();
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                    log.info("rocketmq consumer server is starting....");
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }

        }).start();

        return consumer;
    }

    /**
     * 消息过滤
     * @param msgs
     * @return
     */
    private List<MessageExt> filterMessage(List<MessageExt> msgs) {
        if (isFirstSub && !rocketMQProperties.isEnableHistoryConsumer()) {
            msgs = msgs.stream()
                    .filter(item -> startTime - item.getBornTimestamp() < 0)
                    .collect(Collectors.toList());
        }
        if (isFirstSub && msgs.size() > 0) {
            isFirstSub = false;
        }
        return msgs;
    }

}

4 创建生产者

package com.test.domi.controller;

import com.test.domi.dto.User;
import org.apache.rocketmq.client.producer.*;
import org.apache.rocketmq.common.message.Message;
import org.apache.rocketmq.common.message.MessageQueue;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import com.alibaba.fastjson.JSON;

import java.util.List;

@RestController
public class ProducerController {
    @Autowired
    private DefaultMQProducer defaultProducer;

    @Autowired
    private TransactionMQProducer transactionProducer;

    /**
     * 发送普通消息
     */
    @GetMapping("/sendMessage")
    public void sendMsg() {

        for(int i=0;i<10;i++){
            User user = new User();
            user.setId(String.valueOf(i));
            user.setUsername("jhp"+i);
            String json = JSON.toJSONString(user);
            Message msg = new Message("user-topic","white",json.getBytes());
            try {
                SendResult result = defaultProducer.send(msg);
                System.out.println("消息id:"+result.getMsgId()+":"+","+"发送状态:"+result.getSendStatus());
            } catch (Exception e) {
                e.printStackTrace();
                System.out.println("消息发送失败");
            }
        }

    }

    /**
     * 发送事务消息
     * @return
     */
    @GetMapping("/sendTransactionMess")
    public String sendTransactionMsg() {
        SendResult sendResult = null;
        try {
            // a,b,c三个值对应三个不同的状态
            String ms = "c";
            Message msg = new Message("user-topic","white",ms.getBytes());
            // 发送事务消息
            sendResult = transactionProducer.sendMessageInTransaction(msg, (Message msg1, Object arg) -> {
                String value = "";
                if (arg instanceof String) {
                    value = (String) arg;
                }
                if (value == "") {
                    throw new RuntimeException("发送消息不能为空...");
                } else if (value =="a") {
                    return LocalTransactionState.ROLLBACK_MESSAGE;
                } else if (value =="b") {
                    return LocalTransactionState.COMMIT_MESSAGE;
                }
                return LocalTransactionState.ROLLBACK_MESSAGE;
            }, 4);
            System.out.println(sendResult);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sendResult.toString();
    }

    /**
     * 支持顺序发送消息
     */
    @GetMapping("/sendMessOrder")
    public void sendMsgOrder() {
        for(int i=0;i<100;i++) {
            User user = new User();
            user.setId(String.valueOf(i));
            user.setUsername("jhp" + i);
            String json = JSON.toJSONString(user);
            Message msg = new Message("user-topic", "white", json.getBytes());
            try{
                defaultProducer.send(msg, new MessageQueueSelector() {
                    @Override
                    public MessageQueue select(List<MessageQueue> mqs, Message msg, Object arg) {
                        int index = ((Integer) arg) % mqs.size();
                        return mqs.get(index);
                    }
                },i);
            }
            catch (Exception e){
                e.printStackTrace();
            }
        }
    }
}

5.创建监听对象

package com.test.domi.config;

import org.apache.rocketmq.client.consumer.DefaultMQPushConsumer;
import org.apache.rocketmq.common.message.MessageExt;
import org.springframework.context.ApplicationEvent;
import java.util.List;
/**
 * 监听对象
 * @author 18011618
 *
 */
public class MessageEvent extends ApplicationEvent {
    private static final long serialVersionUID = -4468405250074063206L;
    private DefaultMQPushConsumer consumer;
    private List<MessageExt> msgs;

    public MessageEvent(List<MessageExt> msgs, DefaultMQPushConsumer consumer) throws Exception {
        super(msgs);
        this.consumer = consumer;
        this.setMsgs(msgs);
    }

    public DefaultMQPushConsumer getConsumer() {
        return consumer;
    }

    public void setConsumer(DefaultMQPushConsumer consumer) {
        this.consumer = consumer;
    }

    public List<MessageExt> getMsgs() {
        return msgs;
    }

    public void setMsgs(List<MessageExt> msgs) {
        this.msgs = msgs;
    }
}

6.监听消息进行消费

package com.test.domi.config;

import java.util.List;
import org.apache.rocketmq.common.message.MessageExt;
import org.springframework.context.event.EventListener;
import org.springframework.stereotype.Component;

/**
 * 监听消息进行消费
 */
@Component
public class ConsumerService {
    @EventListener(condition = "#event.msgs[0].topic=='user-topic' && #event.msgs[0].tags=='white'")
    public void rocketmqMsgListener(MessageEvent event) {
        try {
            List<MessageExt> msgs = event.getMsgs();
            for (MessageExt msg : msgs) {
                System.err.println("消费消息:"+new String(msg.getBody()));
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

访问/sendMessage的url生产消息，控制台打印如下：

消息id:C0A801652B5C18B4AAC20F5FF9C60032:,发送状态:SEND_OK
消息id:C0A801652B5C18B4AAC20F5FFFE20033:,发送状态:SEND_OK
消息id:C0A801652B5C18B4AAC20F5FFFE50034:,发送状态:SEND_OK
消息id:C0A801652B5C18B4AAC20F5FFFE80035:,发送状态:SEND_OK
消息id:C0A801652B5C18B4AAC20F5FFFEB0036:,发送状态:SEND_OK
消息id:C0A801652B5C18B4AAC20F5FFFEF0037:,发送状态:SEND_OK
消息id:C0A801652B5C18B4AAC20F5FFFF30038:,发送状态:SEND_OK
消息id:C0A801652B5C18B4AAC20F5FFFF90039:,发送状态:SEND_OK
消息id:C0A801652B5C18B4AAC20F5FFFFC003A:,发送状态:SEND_OK
消息id:C0A801652B5C18B4AAC20F5FFFFF003B:,发送状态:SEND_OK
消费消息:{"id":"9","username":"jhp9"}
消费消息:{"id":"6","username":"jhp6"}
消费消息:{"id":"0","username":"jhp0"}
消费消息:{"id":"5","username":"jhp5"}
消费消息:{"id":"1","username":"jhp1"}
消费消息:{"id":"2","username":"jhp2"}
消费消息:{"id":"7","username":"jhp7"}
消费消息:{"id":"3","username":"jhp3"}
消费消息:{"id":"4","username":"jhp4"}
消费消息:{"id":"8","username":"jhp8"}