SpringBoot整合Rabbitmq设置消息请求头

        String str = "{\"origin\":\"BBC\",\"origin_coupon_id\":51,\"name\":\"123\",\"start_time\":1537763820,\"end_time\":1540874220,\"duration\":\"\",\"validity_type\":0,\"type\":1,\"total_cnt\":\"10000\",\"area\":\"\"}";
        Message message = MessageBuilder.withBody(str.getBytes())
                .setContentType(MessageProperties.CONTENT_TYPE_TEXT_PLAIN)
                .setContentEncoding("utf-8")
                .setMessageId(UUID.randomUUID()+"")
                .build();
        rabbitmqTemplate.convertAndSend("COUPON_EXCHANGE","COUPON_QUEUE",message);