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);