Convert String to a JMS BytesMessage in Java

Question

I am trying to convert a String to a JMS BytesMessage. Is there a good way to do this?

I need to do this because I have a method that takes in a String that is decrypted and I need to convert it into a BytesMessage in order to decrypt the message.

Thanks

What do you wanna know exactly? How to create a BytesMessage? — Carlo
– Carlo, Commented Jun 27, 2012 at 15:18
Well I want to take a String that I already have and convert that into a BytesMessage. I am not too familiar with BytesMessage as I am making changes to already existing code, so is this the wrong way to go about doing this? And yes, I have done that, I can get the String to a bytes[] array but is there a way to convert that into a BytesMessage? — spatel9114
– spatel9114, Commented Jun 27, 2012 at 15:19
If the goal is to encrypt your message, why don't you use the built-in capability of your JMS provider? — perissf
– perissf, Commented Jun 27, 2012 at 15:23

Carlo · Accepted Answer · 2012-06-27 15:46:47Z

 byte[] bArray = "foo".getBytes("UTF-8"); BytesMessage msg = session.createBytesMessage(); // throws JMSException msg.writeBytes(bArray);

Of course, like Arcadien said, you need to execute the code in an appropriate environment to obtain the javax.jms.Session object from.

DwB · Accepted Answer · 2018-11-28 22:22:08Z

A bit late, but better late than never.

The @Carlo answer is essentially correct, except that you must catch an exception if you use getBytes with a String parameter.

Here is a variation (of the getBytes call) that will not throw an exception:

final byte[] byteArray = "blammy".getBytes(StandardCharsets.UTF_8); final BytesMessage bytesMessage = session.createBytesMessage(); bytesMessage.writeBytes(byteArray);

The StandardCharsets class defines charsets that are guaranteed to be available on every implementation of the Java platform.

Arcadien · Accepted Answer · 2012-06-27 15:20:17Z

-1

you can use

byte[] String#getBytes()

to get a byte array from a string and write it to a ByteMessage

answered Jun 27, 2012 at 15:20

Arcadien

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1 Comment

Arcadien Over a year ago

BytesMessage is an interface, not a class. You have to find a factory or an implementation of it in JMS to use it ; though I don't enough know it to give you roasted solution.

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