Swift - Get the path of each folder in the sandbox

        1.//document文件夹
        let documentPath1 = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first! as NSString
        print("documentDirectory", documentPath1)
        
        //在document文件夹下添加新的文件
        let databasePath = documentPath1.appendingPathComponent("newFile")
        print(databasePath)
        
        2.//Library文件夹
        let documentPath2 = NSSearchPathForDirectoriesInDomains(.libraryDirectory, .userDomainMask, true).first! as String
        print("libraryDirectory", documentPath2)
        
        3.//Library--Caches
        let documentPath3 = NSSearchPathForDirectoriesInDomains(.cachesDirectory, .userDomainMask, true).first! as String
        print("cachesDirectory", documentPath3)