How to send JSON in Javascript

TestUserName

Hello,
in the example files for Javscript, perticular the TopicPublisher, there is a line of code that defines a message text.

var messageText = 'Sample Message'
var message = solace.SolclientFactory.createMessage()
message.setDestination(solace.SolclientFactory.createTopicDestination(publisher.topicName))
message.setBinaryAttachment(messageText)

how can i send a JSON format instead of plain text ?

Aaron

Hi @TestUserName, welcome to the Community!

If you want to send some JSON, just do: message.setBinaryAttachment(JSON.stringify(obj));

Note that message.setBinaryAttachment(..) is for just for a plain "raw" binary payload (a BytesMessage). If you want to send a formatted TextMessage in JavaScript, you'd do something like this:

var msg = solace.SolclientFactory.createMessage();
var payloadText = JSON.stringify(obj);
msg.setSdtContainer(solace.SDTField.create(solace.SDTFieldType.STRING, payloadText));
msg.setDestination(solace.SolclientFactory.createTopic("hello/world"));

Sending a formatted TextMessage is generally better for actual text strings as it is easier to deal with in other APIs, and you don't have to worry about encoding it correctly… e.g. UTF-8 or whatever, especially if your string contains any weird chars. See this thread for more details on that!

Aaron

Hi @TestUserName, welcome to the Community!

If you want to send some JSON, just do: message.setBinaryAttachment(JSON.stringify(obj));

Note that message.setBinaryAttachment(..) is for just for a plain "raw" binary payload (a BytesMessage). If you want to send a formatted TextMessage in JavaScript, you'd do something like this:

var msg = solace.SolclientFactory.createMessage();
var payloadText = JSON.stringify(obj);
msg.setSdtContainer(solace.SDTField.create(solace.SDTFieldType.STRING, payloadText));
msg.setDestination(solace.SolclientFactory.createTopic("hello/world"));

Sending a formatted TextMessage is generally better for actual text strings as it is easier to deal with in other APIs, and you don't have to worry about encoding it correctly… e.g. UTF-8 or whatever, especially if your string contains any weird chars. See this thread for more details on that!