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Gatedge.ScanCode/Services/K3FileService.cs

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+using Gatedge.K3Cloud.Utils;
+using Gatedge.K3Cloud.Utils.Model.K3Request;
+using Gatedge.ScanCode.Models.Vo.BaseData;
+using Gatedge.ScanCode.Options;
+using Gatedge.ScanCode.Services.IServices;
+
+namespace Gatedge.ScanCode.Services
+{
+    /// <summary>
+    /// 金蝶k3服务类
+    /// </summary>
+    public class K3FileService : IK3FileService
+    {
+        /// <summary>
+        /// 金蝶云星空工具类
+        /// </summary>
+        private K3CloudApiUtils _utils;
+        private readonly FileOption _fileOption;
+        private readonly ILogger<K3FileService> _logger;
+
+        /// <summary>
+        /// 初始化工具类
+        /// </summary>
+        /// <param name="fileOption"></param>
+        /// <param name="logger"></param>
+        public K3FileService(FileOption fileOption, ILogger<K3FileService> logger)
+        {
+            _fileOption = fileOption;
+            _logger = logger;
+        }
+        /// <summary>
+        /// 下载物料
+        /// </summary>
+        /// <param name="file"></param>
+        private List<byte> DonwloadFile(AttachmentFile file)
+        {
+            var base64File = DonwloadFile(file, 0);
+            return base64File;
+        }
+        /// <summary>
+        /// 下载物料
+        /// </summary>
+        /// <param name="file"></param>
+        /// <param name="startIndex"></param>
+        private List<byte> DonwloadFile(AttachmentFile file, long startIndex)
+        {
+            FileParam fileParam = new FileParam()
+            {
+                FileId = file.FileID,
+                StartIndex = startIndex,
+            };
+            var fileResponse = _utils.FileDonwload(fileParam);
+            var fileBytes = Convert.FromBase64String(fileResponse.FilePart).ToList();
+            if (fileResponse.IsLast == false)
+            {
+                var nextStartIndex = Convert.ToInt64(fileResponse.StartIndex);
+                fileBytes.AddRange(DonwloadFile(file, nextStartIndex));
+                return fileBytes;
+            }
+            return fileBytes;
+        }
+
+        /// <summary>
+        /// Base64字符串转文件并保存
+        /// </summary>
+        /// <param name="dataBytes">base64字符串</param>
+        /// <param name="fileName">保存的文件名</param>
+        /// <returns>是否转换并保存成功</returns>
+        private bool Base64StringToFile(List<byte> dataBytes, string fileName)
+        {
+            try
+            {
+                string path = _fileOption.DonwloadPath; //文件保存路径
+                string fullPath = _fileOption.DonwloadPath + '/' + fileName;
+                if (!Directory.Exists(path))
+                {
+                    Directory.CreateDirectory(path);
+                }
+                File.WriteAllBytes(fullPath, dataBytes.ToArray());
+                return File.Exists(fullPath);
+            }
+            catch (Exception e)
+            {
+                _logger.LogError("异常类型: \t" + e.GetType());
+                _logger.LogError("异常描述：\t" + e.Message);
+                _logger.LogError("异常方法：\t" + e.TargetSite);
+                _logger.LogError("异常堆栈：\t" + e.StackTrace);
+            }
+            return false;
+        }
+
+        /// <summary>
+        /// 获取文件路径，如果没有就会先下载，再返回路径
+        /// </summary>
+        /// <param name="file"></param>
+        /// <returns></returns>
+        public string GetFilePath(AttachmentFile file)
+        {
+            string filePath = _fileOption.DonwloadPath + "/" + file.FileName;
+            if (!File.Exists(filePath))
+            {
+                var fileBase64String = DonwloadFile(file);
+                var isSave = Base64StringToFile(fileBase64String, file.FileName);
+                if (!isSave)
+                {
+                    throw new Exception("文件保存错误，请联系管理员");
+                }
+            }
+            return filePath;
+        }
+        /// <summary>
+        /// 设置K3Util
+        /// </summary>
+        /// <param name="utils"></param>
+        public void SetK3Util(K3CloudApiUtils utils)
+        {
+            _utils = utils;
+        }
+    }
+}