1 Reply Latest reply on Aug 7, 2017 1:12 PM by carko RSS
    drichter Explorer

    TWX 8 have trouble with unterlines in JSON

    Hey everyone,

     

    I made a application with MQTT communication (receiving JSON messages) on ThingWorx 7.2.

     

    Now I working with ThingWorx 8 and use the same application, but now I get error if the JSON messages properties include a underline ( _ ).

     

    For example I get messages like this

     

    {

    "temp":12.16,

    "brightness":9.97,

    "name":"climateSensor_3",

    "humidity":62.41,

    "pressure":1013,

    "time":1501774027515,

    "CO2_concentration":599.39 }

     

    I the datachange subscription of the sensor I do this

     

    me.temp = newVal.temp;

    me.humidity = newVal.humidity;

    ...

    me.CO2concentration = newVal.CO2_concentration;

     

    And I get a error: Execution error in service script [climateSensor_3 Event.DataChange:Property.MQTTValue] : Wrapped java.lang.NullPointerException Cause: null

     

    My next step was to check every property set via logger

     

    me.temp = newVal.temp;

    logger.debug("set temp");

    me.humidity = newVal.humidity;

    logger.debug("set humidity");

    ...

    me.CO2concentration = newVal.CO2_concentration;

    logger.debug("set CO2_concentration");

     

    Now I get the error before the "set CO2_concentration" is logged.

     

    I change the

     

    me.CO2concentration = newVal.CO2_concentration;

     

    to

     

    me.CO2concentration = newVal.CO2concentration;

     

    and change the JSON messages and everything works well.

     

    Why ThingWorx 8 not supported underline in JSON messages? Can I change this behaviar?