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Add javadoc to quick start examples.

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This commit is contained in:
Zhanhui Li
2017-01-22 16:20:21 +08:00
parent e447bd0175
commit e9a87ea93e
2 changed files with 63 additions and 11 deletions
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example/src/main/java/org/apache/rocketmq/example/quickstart/Consumer.java
+28
View File
@@ -25,15 +25,39 @@ import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.common.consumer.ConsumeFromWhere;
import org.apache.rocketmq.common.message.MessageExt;
/**
* This example shows how to subscribe and consume messages using providing {@link DefaultMQPushConsumer}.
*/
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_4");
/*
* Specify name server addresses.
* <p/>
*
* Alternatively, you may specify name server addresses via exporting environmental variable: NAMESRV_ADDR
*/
consumer.setNamesrvAddr("name-server1-ip:9876;name-server2-ip:9876");
/*
* Specify where to start in case the specified consumer group is a brand new one.
*/
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
/*
* Subscribe one more more topics to consume.
*/
consumer.subscribe("TopicTest", "*");
/*
* Register callback to execute on arrival of messages fetched from brokers.
*/
consumer.registerMessageListener(new MessageListenerConcurrently() {
@Override
@@ -44,7 +68,11 @@ public class Consumer {
}
});
/*
* Launch the consumer instance.
*/
consumer.start();
System.out.printf("Consumer Started.%n");
}
}
example/src/main/java/org/apache/rocketmq/example/quickstart/Producer.java
+35 -11
View File
@@ -18,36 +18,60 @@ package org.apache.rocketmq.example.quickstart;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.client.producer.DefaultMQProducer;
import org.apache.rocketmq.client.producer.LocalTransactionExecuter;
import org.apache.rocketmq.client.producer.LocalTransactionState;
import org.apache.rocketmq.client.producer.SendResult;
import org.apache.rocketmq.common.message.Message;
import org.apache.rocketmq.remoting.common.RemotingHelper;
/**
* This class demonstrates how to send messages to brokers using provided {@link DefaultMQProducer}.
*/
public class Producer {
public static void main(String[] args) throws MQClientException, InterruptedException {
/*
* Instantiate with a producer group name.
*/
DefaultMQProducer producer = new DefaultMQProducer("please_rename_unique_group_name");
/*
* Specify name server addresses.
* <p/>
*
* Alternatively, you may specify name server addresses via exporting environmental variable: NAMESRV_ADDR
*/
producer.setNamesrvAddr("name-server1-ip:9876;name-server2-ip:9876");
/*
* Launch the instance.
*/
producer.start();
for (int i = 0; i < 1000; i++) {
try {
Message msg = new Message("TopicTest",
"TagA",
("Hello RocketMQ " + i).getBytes(RemotingHelper.DEFAULT_CHARSET)
/*
* 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.
*/
SendResult sendResult = producer.send(msg);
LocalTransactionExecuter tranExecuter = new LocalTransactionExecuter() {
@Override
public LocalTransactionState executeLocalTransactionBranch(Message msg, Object arg) {
return null;
}
};
System.out.printf("%s%n", sendResult);
} catch (Exception e) {
e.printStackTrace();
Thread.sleep(1000);
}
}
/*
* Shut down once the producer instance is not longer in use.
*/
producer.shutdown();
}
}