public static void main(String[] args) {
try {
MQProducer producer = new DefaultMQProducer("please_rename_unique_group_name");
producer.start();
String[] tags = new String[] {"TagA", "TagB", "TagC", "TagD", "TagE"};
for (int i = 0; i < 100; i++) {
// 订单ID相同的消息要有序
int orderId = i % 10;
Message msg =
new Message(
"TopicTest", tags[i % tags.length], "KEY" + i, ("Hello RocketMQ " + i).getBytes());
SendResult sendResult =
producer.send(
msg,
new MessageQueueSelector() {
@Override
public MessageQueue select(List<MessageQueue> mqs, Message msg, Object arg) {
Integer id = (Integer) arg;
int index = id % mqs.size();
return mqs.get(index);
}
},
orderId);
System.out.println(sendResult);
}
producer.shutdown();
} catch (MQClientException e) {
e.printStackTrace();
} catch (RemotingException e) {
e.printStackTrace();
} catch (MQBrokerException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
/**
* @param args
* @throws MQClientException
*/
public static void main(String[] args) throws MQClientException {
MQProducer oneWayOrderProducer = new DefaultMQProducer("example.producer");
oneWayOrderProducer.start();
String[] tags = new String[] {"TagA", "TagB", "TagC", "TagD", "TagE"};
MessageQueueSelector selector =
new MessageQueueSelector() {
@Override
public MessageQueue select(List<MessageQueue> mqs, Message msg, Object arg) {
Integer id = (Integer) arg;
int index = id % mqs.size();
return mqs.get(index);
}
};
for (int i = 0; i < 10; i++) {
try {
int orderId = i % 10;
Message msg =
new Message(
"TopicTest",
tags[i % tags.length],
"KEY" + i,
("Hello RocketMQ from OneWay" + i).getBytes());
oneWayOrderProducer.sendOneway(msg, selector, orderId);
} catch (RemotingException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (MQClientException e1) {
e1.printStackTrace();
}
}
oneWayOrderProducer.shutdown();
System.exit(0);
}
public static void main(String[] args) throws MQClientException, InterruptedException {
TransactionCheckListener transactionCheckListener = new TransactionCheckListenerImpl();
TransactionMQProducer producer = new TransactionMQProducer("please_rename_unique_group_name");
// 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.setNamesrvAddr("127.0.0.1:9876");
producer.setTransactionCheckListener(transactionCheckListener);
producer.start();
String[] tags = new String[] {"TagA", "TagB", "TagC", "TagD", "TagE"};
TransactionExecuterImpl tranExecuter = new TransactionExecuterImpl();
for (int i = 0; i < 100; i++) {
try {
Message msg =
new Message(
"TopicTest", tags[i % tags.length], "KEY" + i, ("Hello RocketMQ " + i).getBytes());
SendResult sendResult = producer.sendMessageInTransaction(msg, tranExecuter, null);
System.out.println(sendResult);
Thread.sleep(10);
} catch (MQClientException e) {
e.printStackTrace();
}
}
for (int i = 0; i < 100000; i++) {
Thread.sleep(1000);
}
producer.shutdown();
}