init lserp cs 5.0

2026-07-10 15:25:05 +08:00
commit 90f3fda86a
3799 changed files with 976868 additions and 0 deletions
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+using System;
+using System.IO;
+using Lskj.DevFx.Utils;
+
+namespace Lskj.DevFx.Network
+{
+    /// <summary>
+    /// 文件元数据。
+    /// 可以使用以下几种构造方法：
+    /// 本地路径：new UploadFileItem("C:/temp.jpg");
+    /// 本地文件：new UploadFileItem(new FileInfo("C:/temp.jpg"));
+    /// 字节流：new UploadFileItem("abc.jpg", bytes);
+    /// </summary>
+    public class UploadFileItem
+    {
+        private string fileName;
+        private string mimeType;
+        private byte[] content;
+        private FileInfo fileInfo;
+
+        /// <summary>
+        /// 基于本地文件的构造器。
+        /// </summary>
+        /// <param name="fileInfo">本地文件</param>
+        public UploadFileItem(FileInfo fileInfo)
+        {
+            if (fileInfo == null || !fileInfo.Exists)
+            {
+                throw new ArgumentException("fileInfo is null or not exists!");
+            }
+            this.fileInfo = fileInfo;
+        }
+
+        /// <summary>
+        /// 基于本地文件全路径的构造器。
+        /// </summary>
+        /// <param name="filePath">本地文件全路径</param>
+        public UploadFileItem(string filePath)
+            : this(new FileInfo(filePath))
+        { }
+
+        /// <summary>
+        /// 基于文件名和字节流的构造器。
+        /// </summary>
+        /// <param name="fileName">文件名称（服务端持久化字节流到磁盘时的文件名）</param>
+        /// <param name="content">文件字节流</param>
+        public UploadFileItem(string fileName, byte[] content)
+        {
+            if (string.IsNullOrEmpty(fileName)) throw new ArgumentNullException("fileName");
+            if (content == null || content.Length == 0) throw new ArgumentNullException("content");
+
+            this.fileName = fileName;
+            this.content = content;
+        }
+
+        /// <summary>
+        /// 基于文件名、字节流和媒体类型的构造器。
+        /// </summary>
+        /// <param name="fileName">文件名（服务端持久化字节流到磁盘时的文件名）</param>
+        /// <param name="content">文件字节流</param>
+        /// <param name="mimeType">媒体类型</param>
+        public UploadFileItem(String fileName, byte[] content, String mimeType)
+            : this(fileName, content)
+        {
+            if (string.IsNullOrEmpty(mimeType)) throw new ArgumentNullException("mimeType");
+            this.mimeType = mimeType;
+        }
+
+        /// <summary>
+        /// 获取文件名
+        /// </summary>
+        /// <returns></returns>
+        public string GetFileName()
+        {
+            if (this.fileName == null && this.fileInfo != null && this.fileInfo.Exists)
+            {
+                this.fileName = this.fileInfo.FullName;
+            }
+            return this.fileName;
+        }
+
+        /// <summary>
+        /// 获取文件的 mime-type
+        /// </summary>
+        /// <returns></returns>
+        public string GetMimeType()
+        {
+            if (this.mimeType == null)
+            {
+                this.mimeType = FileHelper.GetContentTypeForFileName(GetFileName());
+            }
+            return this.mimeType;
+        }
+
+        /// <summary>
+        /// 获取文件的二进制流
+        /// </summary>
+        /// <returns></returns>
+        public byte[] GetContent()
+        {
+            if (this.content == null && this.fileInfo != null && this.fileInfo.Exists)
+            {
+                using (Stream fileStream = this.fileInfo.OpenRead())
+                {
+                    this.content = new byte[fileStream.Length];
+                    fileStream.Read(content, 0, content.Length);
+                }
+            }
+
+            return this.content;
+        }
+    }
+}