Rocketmq发送顺序消息

       要想保证消息的顺序性，要保证将需要保证顺序的消息按照顺序投递进一个队列中。

       下面演示rocketTemplate发送顺序消息。

      

@RestController
@RequestMapping("demo")
public class SendController {

    @Autowired
    private RocketMQTemplate rocketMQTemplate;

    @GetMapping("send")
    public String send(){
        List list = new ArrayList<>();
        User user1 = new User("创建", 1);
        User user2 = new User("创建", 2);
        User user3 = new User("创建", 3);
        User user4 = new User("创建", 4);
        User user5 = new User("中间", 1);
        User user6 = new User("中间", 2);
        User user7 = new User("中间", 3);
        User user8 = new User("中间", 4);
        User user9 = new User("完成", 1);
        User user10 = new User("完成", 2);
        User user11 = new User("完成", 3);
        User user12 &#