Javafx SceneBuilder视图。getSelectionModel不工作

Tableview.getSelectionModel not working. After advice form @James_D I have used a Model class (Software) to select columns I need while pulling SQL to a tableview. I searched here, the web, moved code and checked intellisense and the best examples I can find anywhere are commented out in the SoftwareController code below, nothing works?Tableview.getSelectionModel not working. After