Java - writeUTF在我的消息中附加一个“n”。为什么？

Question

因此我向WebSphere发送消息并将其成功地放入队列中。但是我遇到了从另一个队列中解决问题的问题。但是当我使用以下行发送消息时，我注意到了它：

inputMessage.writeUTF（消息）; 消息是：

basket/argos/1001?authToken=fgTSdfs&trustToken=gdf43FsfSFefs33&apiKey=ahjd9234imnmdfnwi&sig=abcde&currency=GBP

存储在xml文件中，它在消息的前面附加一个“n”。谁能告诉我为什么？代码如下：

  MQQueueConnectionFactory cf = new MQQueueConnectionFactory();

    // Config
    cf.setHostName(hostname);
    cf.setPort(portNumber);
    cf.setQueueManager(queueManager);
    cf.setChannel(channel);

    //MQQueueConnection connection = (MQQueueConnection) cf.createQueueConnection();
    //MQQueueSession session = (MQQueueSession) connection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
    //MQQueue queue = (MQQueue) session.createQueue(inputQueue);
    //MQQueue queue = (MQQueue)session.
    //MQQueueSender sender =  (MQQueueSender) session.createSender(queue);
    //MQQueueReceiver receiver = (MQQueueReceiver) session.createReceiver(queue);    


    MQQueueManager qMgr = new MQQueueManager(queueManager);
    System.out.println("Queue manager created");

    int openOptions = MQC.MQOO_INPUT_AS_Q_DEF |  
    MQC.MQOO_OUTPUT ;  
    System.out.println("MQ Options created");

    MQQueue mqInputQueue =  
        qMgr.accessQueue(inputQueue,  
                openOptions);

    System.out.println("Queue created");

    MQMessage inputMessage = new MQMessage();
    inputMessage.writeUTF(message);
    System.out.println("message created and sent");

    MQPutMessageOptions pmo = new MQPutMessageOptions();  // accept the defaults,  
    // same as  
    // MQPMO_DEFAULT  
    // constant  
    System.out.println("Queue options created");

    // put the message on the queue  
    mqInputQueue.put(inputMessage,pmo);
    System.out.println("Message put on queue");
    mqInputQueue.close();  

Answer 1

似乎MQMessage派生自DataInput和DataOutput。我猜测writeUTF与DataOutputStream中的做法相同。

您可以参考此答案寻求帮助Why does DataOutputStream.writeUTF() add additional 2 bytes at the beginning?

您有几个选择：

inputMessage.write(message.getBytes("UTF-8"));

或者可能

inputMessage.writeString(message);