rabbitmq延迟交换机创建失败，卡着不动没有然后返回

也是够离谱的，我设置了延迟交换机后程序一直卡着不动了，交换机也没创建，把交换机类型的内置静态变量BuiltinExchangeType.DIRECT换成字符串direct就好了

    @Bean
    public CustomExchange delayExchange() {
        Map<String, Object> map = new HashMap<>();
        map.put("x-delayed-type", BuiltinExchangeType.DIRECT);//问题所在
        return new CustomExchange(DELAY_EXCHANGE,
                "x-delayed-message",
                true,
                false,
                map);
    }

修改成

    @Bean
    public CustomExchange delayExchange() {
        Map<String, Object> map = new HashMap<>();
        map.put("x-delayed-type","direct");//问题所在
        return new CustomExchange(DELAY_EXCHANGE,
                "x-delayed-message",
                true,
                false,
                map);
    }

具体原因谁能解释一下