public class Producer {
public static void main(String[] args) throws MQClientException, InterruptedException {
DefaultMQProducer producer = new DefaultMQProducer("ProducerGroupName");
producer.setNamesrvAddr("10.235.170.7:9877");
producer.setNamesrvAddr("127.0.0.1:9876");
producer.start();
try {
for (int i = 0; i < 6000000; i++) {
Message msg = new Message("TopicFilter7",// topic
"TagA",// tag