顺序消息，报错，请求修改调试成功后粘贴出正确答案

Question

package com.example.rocketmq.comg;

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.MessageListenerConcurrently;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.common.message.MessageExt;

import java.util.List;

//顺序消息
public class Comsumer4 {
    public static void main(String[] args) throws MQClientException {
        //创建消息组
        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("Synccomsumer");
        //连接
        consumer.setNamesrvAddr("192.168.88.130:9876");
        //拿到Simple，再过滤
        consumer.subscribe("Simple","*");
        consumer.setMessageListener(new MessageListenerConcurrently() {
            @Override
            public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> list, ConsumeConcurrentlyContext consumeConcurrentlyContext) {
                for (int i=1;i<list.size();i++){
                    System.out.println("消息消费成功_"+new String(list.get(i).getBody()));
                }

                return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
            }
        });
        consumer.start();
        System.out.println("消费者启动成功");

    }
}
package com.example.rocketmq.comg;

import org.apache.rocketmq.client.exception.MQBrokerException;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.client.producer.DefaultMQProducer;
import org.apache.rocketmq.client.producer.MessageQueueSelector;
import org.apache.rocketmq.client.producer.SendResult;
import org.apache.rocketmq.common.message.Message;
import org.apache.rocketmq.common.message.MessageQueue;
import org.apache.rocketmq.remoting.exception.RemotingException;

import java.nio.charset.StandardCharsets;
import java.util.List;

//顺序消息public class OrderProducer {
    public static void main(String[] args) throws MQClientException, RemotingException, InterruptedException, MQBrokerException {
        //分组
        DefaultMQProducer producer = new DefaultMQProducer("OrderProducer");
        producer.setNamesrvAddr("192.168.88.130:9876");
        producer.start();
        for (int i=0;i<5;i++){
            for (int j=0;j<10;j++){
                //设置消息,有序发送
                Message message = new Message("Order", "TagA", ("order_" + i+"_step_"+j).getBytes(StandardCharsets.UTF_8));
                SendResult sendResult = producer.send(message, new MessageQueueSelector() {
                    @Override
                    public MessageQueue select(List<MessageQueue> list, Message message, Object o) {
                        Integer id = (Integer) o;
                        int index = id % list.size();
                        return list.get(index);
                    }
                }, i);
                System.out.println("信息发送成功_"+sendResult);
            }
        }
        producer.shutdown();
    }
}

Answer 1

你把报错发出来，看代码没用啊。
参考这个，比较详细：

RocketMQ安装部署及整合Springboot - 简书 转载原文：https://www.cnblogs.com/wuzhenzhao/p/11498735.html 作者：吴振照[https://home.cnblogs.... https://www.jianshu.com/p/624a239ef5aa