public static string Skel2Json(string inputFilePath, string outputPath)
        {
            string filePath  = inputFilePath.Replace(".skel", "");
            string atlasPath = filePath + ".atlas";
            string skelPath  = filePath + ".skel";

            using (var fs = File.OpenRead(atlasPath))
                using (var tr = new StreamReader(fs))
                    using (var input = File.OpenRead(skelPath))
                        using (var warningOut = File.OpenWrite(outputPath + ".txt"))
                            using (var warning = new StreamWriter(warningOut))
                            {
                                var atlasReader = new AtlasReader(tr);
                                var reader      = new SpineBin2Json35.BinaryReader(input, atlasReader, warning);
                                var obj         = reader.Convert();

                                using (var output = File.OpenWrite(outputPath))
                                    using (var sw = new StreamWriter(output)) sw.Write(Newtonsoft.Json.JsonConvert.SerializeObject(obj));
                                string message = "";
                                if (input.Length == input.Position)
                                {
                                    message += string.Format("文件长度: {0}\n读取长度: {1}\n 请您检查输出的txt文件来查看龙骨不支持的特性", input.Length, input.Position);
                                }
                                else
                                {
                                    message += message += string.Format("文件长度: {0}\n读取长度: {1}\n 好像哪里不太对劲", input.Length, input.Position);
                                }
                                return(message);
                            }
        }