Can someone tell me what i need to do what is wrong here. I'm trying to pull .png files from json data

robteed · January 20, 2026, 4:29pm

TIMAI2 · January 20, 2026, 4:35pm

Show use some example json data.

Is this typo intended ?

(roster or rostor)

ABG · January 20, 2026, 5:40pm

Your JSON traversal is wrong.

Post a text file with sample responseContent we can play with (not image, please)

robteed · January 20, 2026, 6:38pm

Thanks, Good catch on the typo. Still not working.

robteed · January 20, 2026, 6:57pm

Here is some of the text. This is part of JMRI. A Java Model Ralroading Interface. I'm trying to make an app to control servos to uncouple cars.

TIMAI2 · January 20, 2026, 7:28pm

Do you mean "RailRoading" (not RalRoading) ?

Where are the png files supposed to be ? image / icon / selectedIcon ? Why are there no png files in the json ?

robteed · January 20, 2026, 8:11pm

There are only 4 photos of rolling stock in the json file. I think the photos in the json file might be a symbolic link to /resources/rosterphotos/
I have been playing around and got a little further along.

ABG · January 20, 2026, 8:24pm

Your JSON snippet is incomplete, missing a leading '[' to say that it's a list of objects.
Here's your first object, with maybe some paths to files, but no ".png" to be found.

The path to the most likely candidate is

data
image

yielding
/roster/1111/image

It looks like you're barking up the wrong tree.

Upload the forest.

robteed:

{"type":"rosterEntry","data":{"name":"1111","address":"2","isLongAddress":false,"road":"1111","number":"","mfg":"","decoderModel":"No Decoder","decoderFamily":"No Decoder","model":"","comment":"","maxSpeedPct":100,"image":"/roster/1111/image","icon":null,"shuntingFunction":"","owner":"Robert","dateModified":"2026-01-17T04:28:05.594+00:00","functionKeys":[{"name":"F0","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F1","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F2","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F3","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F4","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F5","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F6","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F7","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F8","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F9","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F10","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F11","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F12","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F13","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F14","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F15","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F16","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F17","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F18","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F19","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F20","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F21","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F22","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F23","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F24","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F25","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F26","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F27","label":null,"lockable":true,"icon":null,"selectedIcon":null},{"name":"F28","label":null,"lockable":true,"icon":null,"selectedIcon":null}],"attributes":,"rosterGroups":}}

ABG · January 20, 2026, 8:44pm

A little web searching brought me to

where I see some possible search terms to home in on the images:

roster
image file
icon