RabbitMQ-记录一个问题及解决

我在配置文件中写入了
rabbitmq: host: 127.0.0.1 port: 5672 username: guest passport: guest virtualhost: / switchFlag: true pool_size: 10
然后希望实现一个监听器，所以加上了注解形式@RabbitListener(queues = CommonConstants.QUERE_NAME_NOTIFY)，由于我工作环境原因，在不同电脑上coding（笔记本没有安装rabbitMQ），为了能否方便使用配置文件中的switchFlag进行切换，所以使用了@ConditionalOnProperty(value = "rabbitmq.switchFlag")，但是我今天心血来潮，想把direct的exchange切换成topic，由于之前的做法是`public void run(ApplicationArguments args) throws Exception {
String host = rabbitmqProperties.getHost();
Integer port = rabbitmqProperties.getPort();
String userName = rabbitmqProperties.getUsername();
String password = rabbitmqProperties.getPassport();
String virtualhost = rabbitmqProperties.getVirtualhost();
Integer poolSize = rabbitmqProperties.getPoolSize();

    RabbitmqConnectionPool.initRabbitmqConnectionPool(host, port, userName, password, virtualhost, poolSize);
    RabbitmqConnection connection = RabbitmqConnectionPool.getConnection();
    Channel channel = connection.getConnection().createChannel();
    // 声明exchange中的消息为可持久化，不自动删除
    // channel.exchangeDeclare(CommonConstants.EXCHANGE_NAME_DIRECT, BuiltinExchangeType.DIRECT, true, false, null);

    channel.exchangeDeclare(CommonConstants.EXCHANGE_NAME_TOPIC, BuiltinExchangeType.TOPIC, true, false, null);

    // 声明点赞的消息队列

// channel.queueDeclare(CommonConstants.QUERE_NAME_PRAISE, true, false, false, null);
// //绑定队列到交换机
// channel.queueBind(CommonConstants.QUERE_NAME_PRAISE, CommonConstants.EXCHANGE_NAME_DIRECT, CommonConstants.QUERE_KEY_PRAISE);
//
// // 声明收藏的消息队列
// channel.queueDeclare(CommonConstants.QUERE_NAME_COLLECT, true, false, false, null);
// //绑定队列到交换机
// channel.queueBind(CommonConstants.QUERE_NAME_COLLECT, CommonConstants.EXCHANGE_NAME_DIRECT, CommonConstants.QUERE_KEY_COLLECT);

    channel.queueDeclare(CommonConstants.QUERE_NAME_NOTIFY, true, false, false, null);
    channel.queueBind(CommonConstants.QUERE_NAME_NOTIFY, CommonConstants.EXCHANGE_NAME_TOPIC, CommonConstants.QUERE_KEY_NOTIFY);

    channel.close();`而这个的运行是在listen之后的，导致一直在报bug。最后解决办法是：先手动注释listen的注解，声明exchange和queue之后，再重新运行代码。