增加上传华为云obs接口

20220330_Vote/Vote.Services/Tools/ZipHelper.cs

@@ -0,0 +1,145 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using ICSharpCode.SharpZipLib.Checksums;
+using ICSharpCode.SharpZipLib.Zip;
+
+namespace Vote.Services.Tools
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    public class ZipHelper
+    {
+
+        /// <summary>
+        /// 所有文件缓存
+        /// </summary>
+        List<string> files = new List<string>();
+        /// <summary>
+        /// 所有空目录缓存
+        /// </summary>
+        List<string> paths = new List<string>();
+        /// <summary>
+        /// 取得目录下所有文件及文件夹，分别存入files及paths
+        /// </summary>
+        /// <param name="rootPath">根目录</param>
+        private void GetAllDirectories(string rootPath)
+        {
+            string[] subPaths = Directory.GetDirectories(rootPath);//得到所有子目录
+            foreach (string path in subPaths)
+            {
+                GetAllDirectories(path);//对每一个字目录做与根目录相同的操作：即找到子目录并将当前目录的文件名存入List
+            }
+            string[] files = Directory.GetFiles(rootPath);
+            foreach (string file in files)
+            {
+                this.files.Add(file);//将当前目录中的所有文件全名存入文件List
+            }
+            if (subPaths.Length == files.Length && files.Length == 0)//如果是空目录
+            {
+                this.paths.Add(rootPath);//记录空目录
+            }
+        }
+
+
+        /// <summary>
+        /// 压缩目录（包括子目录及所有文件）
+        /// </summary>
+        /// <param name="rootPath">要压缩的根目录</param>
+        /// <param name="destinationPath">保存路径</param>
+        /// <param name="compressLevel">压缩程度，范围0-9，数值越大，压缩程序越高</param>
+        public void ZipFileFromDirectory(string rootPath, string destinationPath, int compressLevel)
+        {
+            this.files.Clear();
+            GetAllDirectories(rootPath);
+
+            string rootMark = rootPath + "\\";//得到当前路径的位置，以备压缩时将所压缩内容转变成相对路径。
+            Crc32 crc = new Crc32();
+            using ZipOutputStream outPutStream = new ZipOutputStream(System.IO.File.Create(destinationPath));
+            outPutStream.SetLevel(compressLevel); // 0 - store only to 9 - means best compression
+            foreach (string file in files)
+            {
+                using FileStream fileStream = System.IO.File.OpenRead(file);//打开压缩文件
+                byte[] buffer = new byte[fileStream.Length];
+                fileStream.Read(buffer, 0, buffer.Length);
+                ZipEntry entry = new ZipEntry(file.Replace(rootMark, string.Empty));
+                entry.DateTime = DateTime.Now;
+
+                entry.Size = fileStream.Length;
+                fileStream.Close();
+                crc.Reset();
+                crc.Update(buffer);
+                entry.Crc = crc.Value;
+                outPutStream.PutNextEntry(entry);
+                outPutStream.Write(buffer, 0, buffer.Length);
+            }
+
+            this.files.Clear();
+
+            foreach (string emptyPath in paths)
+            {
+                ZipEntry entry = new ZipEntry(emptyPath.Replace(rootMark, string.Empty) + "/");
+                outPutStream.PutNextEntry(entry);
+            }
+
+            this.paths.Clear();
+            outPutStream.Finish();
+            outPutStream.Close();
+            GC.Collect();
+        }
+        /// <summary>
+        /// 压缩单个文件
+        /// <param name="filepath">要压缩的文件路径</param>
+        /// <param name="compressLevel">压缩程度，范围0-9，数值越大，压缩程序越高</param>
+        /// <paramref name="dwgZipPath">输出zip文件路径</paramref>
+        /// </summary>
+        public bool ZipOneFile(string filepath, int compressLevel)
+        {
+            var r = false;
+            try
+            {
+                var file = new FileInfo(filepath);
+                var dwgZipPath = GetZipFileName(filepath);
+                Crc32 crc = new Crc32();
+                using ZipOutputStream outPutStream = new ZipOutputStream(System.IO.File.Create(dwgZipPath));
+                outPutStream.SetLevel(compressLevel); // 0 - store only to 9 - means best compression 
+                using FileStream fileStream = System.IO.File.OpenRead(filepath);//打开压缩文件
+                byte[] buffer = new byte[fileStream.Length];
+                fileStream.Read(buffer, 0, buffer.Length);
+                ZipEntry entry = new ZipEntry(filepath.Replace(file.DirectoryName + "\\", string.Empty));
+                entry.DateTime = DateTime.Now;
+                entry.Size = fileStream.Length;
+                fileStream.Close();
+                crc.Reset();
+                crc.Update(buffer);
+                entry.Crc = crc.Value;
+                outPutStream.PutNextEntry(entry);
+                outPutStream.Write(buffer, 0, buffer.Length);
+                this.files.Clear();
+                this.paths.Clear();
+                outPutStream.Finish();
+                outPutStream.Close();
+                GC.Collect();
+                r = true;
+            }
+            catch (Exception ex)
+            {
+                r = false;
+            }
+            return r;
+        }
+        private string GetZipFileName(string filepath)
+        {
+            //if (System.IO.File.Exists(filepath + ".zip"))
+            //{
+            //    return GetZipFileName(filepath + ".zip");
+            //}
+            return filepath + ".zip";
+        }
+
+    }
+}