psd文件中 组（图层界面中的文件夹）是存储在五层中的哪个层哪个位置

You would most likely do better asking this in the Photoshop Scripting forum the are some C# programmers over there.  To processes all layers and layer sets you need to use recursion that is all I know. Group information should be in the group object. Photoshop Scripting

Target a layer group and run this script

//Thanks to r-bin

alert(obj_to_str(activeDocument.activeLayer), "Object Properties"); 

function obj_to_str(obj){var str = ""; for (var p in obj) if(obj.hasOwnProperty(p))try{str+=p+"::"+obj

+"\n";}catch(e){};return str;} 

its name is  icon