1.点歌支付防抖

2.点歌记录倒序
3.下单同步保存库存记录

src/main/java/com/chaozhanggui/system/cashierservice/util/MQUtils.java

@@ -0,0 +1,26 @@
+package com.chaozhanggui.system.cashierservice.util;
+
+import com.alibaba.fastjson.JSONObject;
+import com.chaozhanggui.system.cashierservice.rabbit.RabbitConstants;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.amqp.rabbit.core.RabbitTemplate;
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Component
+public class MQUtils {
+    private final RabbitTemplate rabbitTemplate;
+
+    public MQUtils(RabbitTemplate rabbitTemplate) {
+        this.rabbitTemplate = rabbitTemplate;
+    }
+
+    private  <T> void sendMsg(String exchange, String routingKey, T data, String note) {
+        log.info("开始发送{}mq消息, exchange: {}, routingKey: {}, data: {}", note, exchange, routingKey, data);
+        rabbitTemplate.convertAndSend(exchange, routingKey, JSONObject.toJSONString(data));
+    }
+
+    public <T> void sendStockSaleMsg(T data) {
+        sendMsg(RabbitConstants.EXCHANGE_STOCK_RECORD, RabbitConstants.ROUTING_STOCK_RECORD_SALE, data, "商品售出增加库存记录");
+    }
+}