c# 文件压缩zip或将zip文件解压的方法
程序员文章站
2023-12-19 11:10:34
1.必须dll:
icsharpcode.sharpziplib.dll。可从nutget程序包中获取。
2.压缩文件
/// ...
1.必须dll:
icsharpcode.sharpziplib.dll。可从nutget程序包中获取。
2.压缩文件
/// <summary> /// 压缩文件成zip /// </summary> /// <param name="filezip">压缩成zip文件的绝对路径</param> /// <param name="filename">被压缩指定文件的名字</param> /// <param name="zipfilepath"></param> /// <returns></returns> public bool createzipfile(string filezip,string filename, string zipfilepath) { bool iszip = false; if (!directory.exists(zipfilepath)) { logger.info($"cannot find directory {zipfilepath}", false, "filetozip"); return iszip; } try { string[] filenames = directory.getfiles(zipfilepath); using (zipoutputstream s = new zipoutputstream(file.create(filezip))) { s.setlevel(9); // 压缩级别 0-9 //s.password = "123"; //zip压缩文件密码 byte[] buffer = new byte[4096]; //缓冲区大小 foreach (string file in filenames.tolist()) { if (file== zipfilepath+filename)//指定被压缩文件的绝对路径 { zipentry entry = new zipentry(path.getfilename(file)); entry.datetime = datetime.now; s.putnextentry(entry); using (filestream fs = file.openread(file)) { int sourcebytes; do { sourcebytes = fs.read(buffer, 0, buffer.length); s.write(buffer, 0, sourcebytes); } while (sourcebytes > 0); fs.close(); fs.dispose(); } break; } } s.finish(); s.close(); iszip = true; } } catch (exception ex) { logger.info($"exception during processing {0}", false, "filetozip"); } return iszip; }
3.将zip文件解压
/// <summary> /// 解压文件 /// </summary> /// <param name="zipfilepath">压缩文件的绝对路径</param> public void unzipfile(string zipfilepath) { if (!file.exists(zipfilepath)) { logger.info($"cannot find file {zipfilepath}", false, "filetozip"); return; } using (zipinputstream s = new zipinputstream(file.openread(zipfilepath))) { zipentry theentry; while ((theentry = s.getnextentry()) != null) { string directoryname = path.getdirectoryname(theentry.name); string filename = path.getfilename(theentry.name); // create directory if (directoryname?.length > 0) { directory.createdirectory(directoryname); } if (!string.isnullorempty(filename)) { using (filestream streamwriter = file.create(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; } } } } } } }
4.其它:其中的logger是log4的用法。
以上这篇c# 文件压缩zip或将zip文件解压的方法就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。