文章目錄
rocketmq4.3.0消費者生成者官方測試用例
- 注意客戶端和服務端的版本最好一致!!
添加rocketmq的依賴
<dependency>
<groupId>org.apache.rocketmq</groupId>
<artifactId>rocketmq-client</artifactId>
<version>4.3.0</version>
</dependency>
可靠的同步傳輸廣泛應用於場景,如重要通知消息、短信通知、短信營銷系統等。
- 消費者分組
- rocketmq地址
- 主題、二級主題(tag)、消息
/**
* 可靠的同步傳輸廣泛應用於場景,如重要通知消息、短信通知、短信營銷系統等。
*/
public class SyncProducer {
public static void main(String[] args) throws Exception {
//Instantiate with a producer group name.
DefaultMQProducer producer = new
DefaultMQProducer("please_rename_unique_group_name");
// Specify name server addresses.
producer.setNamesrvAddr("192.168.102.134:9876");
//Launch the instance.
producer.start();
for (int i = 0; i < 100; i++) {
//Create a message instance, specifying topic, tag and message body.
Message msg = new Message("cancan" /* Topic */,
"TagA" /* Tag */,
("Hello RocketMQ " +
i).getBytes(RemotingHelper.DEFAULT_CHARSET) /* Message body */
);
//Call send message to deliver message to one of brokers.
SendResult sendResult = producer.send(msg);
System.out.printf("%s%n", sendResult);
}
//Shut down once the producer instance is not longer in use.
producer.shutdown();
}
}
消費者
- 消費組
- 消費者地址
- 主題、二級主題(tag)
/**
* 消費生產者數據
*/
public class Consumer {
public static void main(String[] args) throws InterruptedException, MQClientException {
// Instantiate with specified consumer group name.
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("please_rename_unique_group_name");
// Specify name server addresses.
consumer.setNamesrvAddr("localhost:9876");
// Subscribe one more more topics to consume.
//訂閱主題,後面的*爲二級主題,也稱爲tag
consumer.subscribe("TopicTest", "*");
// Register callback to execute on arrival of messages fetched from brokers.
consumer.registerMessageListener(new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
ConsumeConcurrentlyContext context) {
System.out.printf("%s Receive New Messages: %s %n", Thread.currentThread().getName(), msgs);
for (MessageExt msg : msgs) {
String str = new String(msg.getBody());
System.out.println("獲取消息體:"+str);
}
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
//Launch the consumer instance.
consumer.start();
System.out.printf("Consumer Started.%n");
}
}
異步傳輸通常用於響應時間敏感的業務場景。
- 消費者分組
- rocketmq地址
- 主題、二級主題(tag)、key(Message 索引鍵,RocketMQ可以利用這些key快速檢索到消息)、消息
/**
* 異步傳輸通常用於響應時間敏感的業務場景。
*/
public class AsyncProducer {
public static void main(String[] args) throws Exception {
//Instantiate with a producer group name.
DefaultMQProducer producer = new DefaultMQProducer("please_rename_unique_group_name");
// Specify name server addresses.
producer.setNamesrvAddr("192.168.102.134:9876");
//Launch the instance.
producer.start();
producer.setRetryTimesWhenSendAsyncFailed(0);
int messageCount = 103;//發送消息數量
final CountDownLatch countDownLatch = new CountDownLatch(messageCount);//定義條件
for (int i = 0; i < 100; i++) {
final int index = i;
//Create a message instance, specifying topic, tag and message body.
Message msg = new Message("TopicTest",
"TagA",
"OrderID188",
"Hello world".getBytes(RemotingHelper.DEFAULT_CHARSET));
producer.send(msg, new SendCallback() {
public void onSuccess(SendResult sendResult) {
countDownLatch.countDown();
System.out.printf("%-10d OK %s %n", index,
sendResult.getMsgId());
}
public void onException(Throwable e) {
countDownLatch.countDown();
System.out.printf("%-10d Exception %s %n", index, e);
e.printStackTrace();
}
});
}
//Shut down once the producer instance is not longer in use.
//Thread.sleep(3000); //延遲主線程的執行時間
countDownLatch.await(5, TimeUnit.SECONDS);//達到100關閉生產(發送者)
producer.shutdown();
}
}
單向傳輸用於需要中等可靠性的情況,如日誌收集。
- 消費者分組
- rocketmq地址
- 主題、二級主題(tag)、消息
/**
* 單向傳輸用於需要中等可靠性的情況,如日誌收集。
*/
public class OnewayProducer {
public static void main(String[] args) throws Exception{
//Instantiate with a producer group name.
DefaultMQProducer producer = new DefaultMQProducer("please_rename_unique_group_name");
// Specify name server addresses.
producer.setNamesrvAddr("192.168.102.134:9876");
//Launch the instance.
producer.start();
for (int i = 0; i < 100; i++) {
//Create a message instance, specifying topic, tag and message body.
Message msg = new Message("TopicTest" /* Topic */,
"TagA" /* Tag */,
("Hello RocketMQ " +
i).getBytes(RemotingHelper.DEFAULT_CHARSET) /* Message body */
);
//Call send message to deliver message to one of brokers.
producer.sendOneway(msg);
}
//Shut down once the producer instance is not longer in use.
producer.shutdown();
}
}
rocketmq關鍵字說明
參考我之前發的文章: https://blog.csdn.net/qq_34168515/article/details/106534430