### Question:
Demo13Producer { public void syncSend(Integer id) { Demo13Message message = new Demo13Message(); message.setId(id); rabbitTemplate.convertAndSend(Demo13Message.EXCHANGE, Demo13Message.ROUTING_KEY, message); }  void syncSend(Integer id); void syncSendReturn(Integer id);  }### Answer:
@Test public void testSyncSend() throws InterruptedException { int id = (int) (System.currentTimeMillis() / 1000); producer.syncSend(id); logger.info("[testSyncSend][发送编号：[{}] 发送成功]", id); new CountDownLatch(1).await(); }