C# 解压zip压缩文件

谁践踏了优雅 2022-01-09 21:56 370阅读 0赞

此方法需要在程序内引用ICSharpCode.SharpZipLib.dll 类库

/// <summary>
            /// 功能：解压zip格式的文件。
            /// </summary>
            /// <param name="zipFilePath">压缩文件路径</param>
            /// <param name="unZipDir">解压文件存放路径,为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹</param>
            /// <param name="err">出错信息</param>
            /// <returns>解压是否成功</returns>
            public bool UnZipFile(string zipFilePath, string unZipDir)// , out string err
            {
                // err = "";
                if (zipFilePath == string.Empty)
                {
                    //err = "压缩文件不能为空！";
                    return false;
                }
                if (!File.Exists(zipFilePath))
                {
                    //err = "压缩文件不存在！";
                    return false;
                }
                //解压文件夹为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹
                if (unZipDir == string.Empty)
                    unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), Path.GetFileNameWithoutExtension(zipFilePath));
                if (!unZipDir.EndsWith("\\"))
                    unZipDir += "\\";
                if (!Directory.Exists(unZipDir))
                    Directory.CreateDirectory(unZipDir);
    
                try
                {
                    using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipFilePath.ToLower())))
                    {
    
                        ZipEntry theEntry;
                        while ((theEntry = s.GetNextEntry()) != null)
                        {
                            string directoryName = Path.GetDirectoryName(theEntry.Name);
                            string fileName = Path.GetFileName(theEntry.Name);
                            if (directoryName.Length > 0)
                            {
                                Directory.CreateDirectory(unZipDir + directoryName);
                            }
                            if (!directoryName.EndsWith("\\"))
                                directoryName += "\\";
                            if (fileName != String.Empty)
                            {
                                using (FileStream streamWriter = File.Create(unZipDir + theEntry.Name))
                                {
    
                                    int size = 2048;
                                    byte[] data = new byte[2048];
                                    while (true)
                                    {
                                        size = s.Read(data, 0, data.Length);
                                        if (size > 0)
                                        {
                                            streamWriter.Write(data, 0, size);
                                        }
                                        else
                                        {
                                            break;
                                        }
                                    }
                                }
                            }
                        }//while
                    }
                }
                catch (Exception ex)
                {
                    //err = ex.Message;
                    return false;
                }
                return true;
            }//解压结束