Reading JSON data into a DTH?

[ritchierich (Michael)]

This thread should get you going:

JSON Parsing in Device Type Handler

I have an arduino node in my garage that I had been using with HomeGenie. It parsed the simple JSON string in C# no problems. I haven’t had much time to get it working with SmartThings yet but I keep having trouble parsing the JSON. I validated the JSON string with a couple online utilities. The DTH is getting the JSON string into the msg.body but not parsing it automatically into msg.json so I tried to add JSON.parse… //msg.body={“door1”:“0”} var j = JSON.parse(msg.body); log.debug “j.door1 ${j.door1}” This keeps giving NULL pointer. Does the arduino server have to report “Content-Type: application/json”? If I try this it fails… var j = JSON.parse("{“door1”:“0”}"); log.debug "j.door1 ${j.door1}" until I escape the JSON required quotation marks, then fails for NULL again. Any…