sets the content of the HTTP message body to the specified value. The value can be a static string, or it can be dynamically generated by an expression. Different languages such as SpEL, Groovy, XMLPath or JsonPath are supported. setBody does not support conditional processing or loops. When you need these features, resort to the template plugin instead.
The content of the message body is set as UTF-8 encoded bytes. Set a corresponding content type header if necessary.