RabbitMQ 的使用

MiaoshaMessage  类

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import com.imooc.miaosha.domain.MiaoshaUser;

public class MiaoshaMessage {
private MiaoshaUser user;
private long goodsId;
public MiaoshaUser getUser() {
return user;
}
public void setUser(MiaoshaUser user) {
this.user = user;
}
public long getGoodsId() {
return goodsId;
}
public void setGoodsId(long goodsId) {
this.goodsId = goodsId;
}
}

MQConfig 类

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@Configuration
public class MQConfig {

public static final String MIAOSHA_QUEUE = "miaosha.queue";
public static final String QUEUE = "queue";
public static final String TOPIC_QUEUE1 = "topic.queue1";
public static final String TOPIC_QUEUE2 = "topic.queue2";
public static final String HEADER_QUEUE = "header.queue";
public static final String TOPIC_EXCHANGE = "topicExchage";
public static final String FANOUT_EXCHANGE = "fanoutxchage";
public static final String HEADERS_EXCHANGE = "headersExchage";

/**
* Direct模式 交换机Exchange
* */
@Bean
public Queue queue() {
return new Queue(QUEUE, true);
}

/**
* Topic模式 交换机Exchange
* */
@Bean
public Queue topicQueue1() {
return new Queue(TOPIC_QUEUE1, true);
}
@Bean
public Queue topicQueue2() {
return new Queue(TOPIC_QUEUE2, true);
}
@Bean
public TopicExchange topicExchage(){
return new TopicExchange(TOPIC_EXCHANGE);
}
@Bean
public Binding topicBinding1() {
return BindingBuilder.bind(topicQueue1()).to(topicExchage()).with("topic.key1");
}
@Bean
public Binding topicBinding2() {
return BindingBuilder.bind(topicQueue2()).to(topicExchage()).with("topic.#");
}
/**
* Fanout模式 交换机Exchange
* */
@Bean
public FanoutExchange fanoutExchage(){
return new FanoutExchange(FANOUT_EXCHANGE);
}
@Bean
public Binding FanoutBinding1() {
return BindingBuilder.bind(topicQueue1()).to(fanoutExchage());
}
@Bean
public Binding FanoutBinding2() {
return BindingBuilder.bind(topicQueue2()).to(fanoutExchage());
}
/**
* Header模式 交换机Exchange
* */
@Bean
public HeadersExchange headersExchage(){
return new HeadersExchange(HEADERS_EXCHANGE);
}
@Bean
public Queue headerQueue1() {
return new Queue(HEADER_QUEUE, true);
}
@Bean
public Binding headerBinding() {
Map<String, Object> map = new HashMap<String, Object>();
map.put("header1", "value1");
map.put("header2", "value2");
return BindingBuilder.bind(headerQueue1()).to(headersExchage()).whereAll(map).match();
}

}

MQSender  类

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@Service
public class MQSender {

private static Logger log = LoggerFactory.getLogger(MQSender.class);

@Autowired
AmqpTemplate amqpTemplate ;

public void sendMiaoshaMessage(MiaoshaMessage mm) {
String msg = RedisService.beanToString(mm);
log.info("send message:"+msg);
amqpTemplate.convertAndSend(MQConfig.MIAOSHA_QUEUE, msg);
}

// public void send(Object message) {
// String msg = RedisService.beanToString(message);
// log.info("send message:"+msg);
// amqpTemplate.convertAndSend(MQConfig.QUEUE, msg);
// }
//
// public void sendTopic(Object message) {
// String msg = RedisService.beanToString(message);
// log.info("send topic message:"+msg);
// amqpTemplate.convertAndSend(MQConfig.TOPIC_EXCHANGE, "topic.key1", msg+"1");
// amqpTemplate.convertAndSend(MQConfig.TOPIC_EXCHANGE, "topic.key2", msg+"2");
// }
//
// public void sendFanout(Object message) {
// String msg = RedisService.beanToString(message);
// log.info("send fanout message:"+msg);
// amqpTemplate.convertAndSend(MQConfig.FANOUT_EXCHANGE, "", msg);
// }
//
// public void sendHeader(Object message) {
// String msg = RedisService.beanToString(message);
// log.info("send fanout message:"+msg);
// MessageProperties properties = new MessageProperties();
// properties.setHeader("header1", "value1");
// properties.setHeader("header2", "value2");
// Message obj = new Message(msg.getBytes(), properties);
// amqpTemplate.convertAndSend(MQConfig.HEADERS_EXCHANGE, "", obj);
// }

}

MQReceiver 类

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@Service
public class MQReceiver {

private static Logger log = LoggerFactory.getLogger(MQReceiver.class);

@Autowired
RedisService redisService;

@Autowired
GoodsService goodsService;

@Autowired
OrderService orderService;

@Autowired
MiaoshaService miaoshaService;

@RabbitListener(queues=MQConfig.MIAOSHA_QUEUE)
public void receive(String message) {
log.info("receive message:"+message);
MiaoshaMessage mm = RedisService.stringToBean(message, MiaoshaMessage.class);
MiaoshaUser user = mm.getUser();
long goodsId = mm.getGoodsId();

GoodsVo goods = goodsService.getGoodsVoByGoodsId(goodsId);
int stock = goods.getStockCount();
if(stock <= 0) {
return;
}
//判断是否已经秒杀到了
MiaoshaOrder order = orderService.getMiaoshaOrderByUserIdGoodsId(user.getId(), goodsId);
if(order != null) {
return;
}
//减库存 下订单 写入秒杀订单
miaoshaService.miaosha(user, goods);
}

// @RabbitListener(queues=MQConfig.QUEUE)
// public void receive(String message) {
// log.info("receive message:"+message);
// }
//
// @RabbitListener(queues=MQConfig.TOPIC_QUEUE1)
// public void receiveTopic1(String message) {
// log.info(" topic queue1 message:"+message);
// }
//
// @RabbitListener(queues=MQConfig.TOPIC_QUEUE2)
// public void receiveTopic2(String message) {
// log.info(" topic queue2 message:"+message);
// }
//
// @RabbitListener(queues=MQConfig.HEADER_QUEUE)
// public void receiveHeaderQueue(byte[] message) {
// log.info(" header queue message:"+new String(message));
// }
//

}