rocketmq发送消息代码

        DefaultMQProducer defaultMQProducer = new DefaultMQProducer();        defaultMQProducer.setProducerGroup(Constant.operationLogGroup);        defaultMQProducer.setInstanceName(Constant.operationLogInstance);        defaultMQProducer.setNamesrvAddr(Constant.rocketQueneAddr);        try {            defaultMQProducer.start();            defaultMQProducer.send(message);        } catch (Exception e) {            logger.error("produce operation log message error", e);        } finally {            defaultMQProducer.shutdown();        }