empty print job

[syscoopco]

Hi,

I'm trying to print from a Java application deployed in another device. The connection with RawBT WS is established and closed with no errors. When sending, RawBT notifies "Empty print job". This is the code fragment:

if (c.connectBlocking(1, TimeUnit.SECONDS)) { StringBuilder json = new StringBuilder(); json.append("{\"message\":\"").append("test").append("\"}"); c.send(json.toString()); }

I guess it has to do with the JSON arguments, or string format.

Any helps would be appreciated.