springboot开发笔记(5.1.阿里rocketmq demo)

1.前言

项目中用到阿里的rocketmq，本以为已经和springboot集成好了，找了一圈也没找到，只好自己写一个凑合先用用。

2.win10下rocketmq下载安装

地址：https://github.com/alibaba/RocketMQ/releases
可能已经又更新了，我用的3.5.8，解压后里边有个install.bat，双击运行（这部分可能需要配置maven，java环境，自行处理一下吧），运行完成后有一个target文件夹

3.启动rocketmq

进入目录，…\target\alibaba-rocketmq-broker\alibaba-rocketmq\bin
（1）启动nameServer，ctrl+r，输入cmd，启动命令窗口，cd进入上面路径下输入：
mqnamesrv.exe -n 127.0.0.1:9876
（2）启动brocker，同样新建cmd命令窗口，同路径下输入：
mqbroker.exe -n 127.0.0.1:9876 autoCreateTopicEnable=true
（3）启动admin，新建cmd命令窗口，同路径输入，可以看到topic，需要启动下面代码
mqadmin.exe topicList -n 127.0.0.1:9876

4.测试代码

新建springboot项目：根据springboot开发笔记(1)
http://blog.csdn.net/bjjoy2009/article/details/78079221
pom.xml添加内容

<dependency>
    <groupId>com.alibaba.rocketmqgroupId>
    <artifactId>rocketmq-clientartifactId>
    <version>3.5.8version>
dependency>
<dependency>
    <groupId>com.alibabagroupId>
    <artifactId>fastjsonartifactId>
    <version>1.2.29version>
dependency>

java代码如下（网上copy的）

package com.example.demo.rocketmq;

import com.alibaba.rocketmq.client.exception.MQClientException;
import com.alibaba.rocketmq.client.producer.DefaultMQProducer;
import com.alibaba.rocketmq.client.producer.LocalTransactionExecuter;
import com.alibaba.rocketmq.client.producer.LocalTransactionState;
import com.alibaba.rocketmq.client.producer.SendResult;
import com.alibaba.rocketmq.common.message.Message;
import com.alibaba.rocketmq.remoting.common.RemotingHelper;

/**
 * @author bjjoy
 * @date 2018/2/3
 **/
public class Producer {

    public static void main(String[] args) throws MQClientException, InterruptedException {
        DefaultMQProducer producer = new DefaultMQProducer("please_rename_unique_group_name");
        producer.setNamesrvAddr("127.0.0.1:9876");
        producer.start();

        for (int i = 0; i < 3; i++) {
            try {
                Message msg = new Message("TopicTest",
                        "TagA",
                        ("Hello RocketMQ " + i).getBytes(RemotingHelper.DEFAULT_CHARSET)
                );
                SendResult sendResult = producer.send(msg);
                LocalTransactionExecuter tranExecuter = new LocalTransactionExecuter() {

                    @Override
                    public LocalTransactionState executeLocalTransactionBranch(Message msg, Object arg) {
                        // TODO Auto-generated method stub
                        return null;
                    }
                };

                //producer.sendMessageInTransaction(msg, tranExecuter, arg)
                System.out.println(sendResult);
            } catch (Exception e) {
                e.printStackTrace();
                Thread.sleep(1000);
            }
        }

        producer.shutdown();
    }
}

package com.example.demo.rocketmq;

import com.alibaba.rocketmq.client.consumer.DefaultMQPushConsumer;
import com.alibaba.rocketmq.client.consumer.listener.ConsumeConcurrentlyContext;
import com.alibaba.rocketmq.client.consumer.listener.ConsumeConcurrentlyStatus;
import com.alibaba.rocketmq.client.consumer.listener.MessageListenerConcurrently;
import com.alibaba.rocketmq.client.exception.MQClientException;
import com.alibaba.rocketmq.common.consumer.ConsumeFromWhere;
import com.alibaba.rocketmq.common.message.MessageExt;

import java.io.UnsupportedEncodingException;
import java.util.List;

/**
 * @author bjjoy
 * @date 2018/2/3
 **/
public class Consumer {

    public static void main(String[] args) throws InterruptedException, MQClientException {
        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("please_rename_unique_group_name_4");

        consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);

        consumer.setNamesrvAddr("127.0.0.1:9876");

        consumer.subscribe("TopicTest", "*");

        consumer.registerMessageListener(new MessageListenerConcurrently() {

            @Override
            public ConsumeConcurrentlyStatus consumeMessage(List msgs,
                                                            ConsumeConcurrentlyContext context) {
                System.out.println(Thread.currentThread().getName() + " Receive New Messages: " + msgs);
                for(MessageExt me:msgs){
                    try {
                        System.out.println(new String(me.getBody(),"utf-8"));
                    } catch (UnsupportedEncodingException e) {
                        e.printStackTrace();
                    }
                }
                return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
            }
        });

        consumer.start();

        System.out.println("Consumer Started.");
    }
}

5.后续

上面代码只是测试一下rocketmq，下面需要整合到springboot项目中，目前还没想好如何整合。通过注解方式呢，这个不太熟。通过配置方式，像前面博客springboot开发笔记(3)
http://blog.csdn.net/bjjoy2009/article/details/78725398
谁知道呢，先看看吧。