如何查找通过JMS消息接收的文件的名称（消息）

Question

How do we find the name of the file received through JMS message, i need to know the name of the file, for example if the text file of name example.txt is received, i want to get the name "example" of the file through javax.jms.Message.

here's the code

public void onMessage(Message message, Session session) throws JMSException {
    String msg = null; 
    if (message instanceof TextMessage || message instanceof BytesMessage) {
        if (message instanceof BytesMessage) {


            BytesMessage byteMessage = (BytesMessage) message; 
            StringBuffer buffer = new StringBuffer((int)byteMessage.getBodyLength());
          byteMessage.
            for (int i = 0; i < (int)byteMessage.getBodyLength(); i++) { 
                buffer.append((char)byteMessage.readByte()); 
            } 
            msg = buffer.toString().trim(); 
            //for processing the message i need to know the name of the file.
            //how to find the name of the file received, like "example" //if received file is "example.txt"
        }
        else  {
            getLogger().debug(this.getClass().getName() + ": Received TextMessage");
            msg = ((TextMessage)message).getText();
        }


    getLogger().debug("Request received by " + this.getClass().getName() + " has been processed");
}

Answer 1

JMS has no idea what a file is. Although, when sending the message, you can attach metadata to the message using string properties. It's common to place something like "originalFilename" as a property when the message is sent.

msg.setStringProperty("originalFilename",filename);
// .. set the bytes of the file somehow
msgProducer.send(msg);

then, in your receive code, you can just pick it up by

String filename = message.getStringProperty("originalFilename");