关于几种语言(c#,php,python,javascript)字符串的gzip压缩与解压的整理

来源：互联网发布：csmar数据库包括编辑：程序博客网时间：2024/05/16 04:57

背景介绍

因为一直在处理restful API，给移动端提供的数据需要考虑流量问题，优先考虑就是压缩现有的字符串，然后再考虑业务逻辑方面的减少流量。鉴于找这些资料也花了不少时间，所以整理了这篇文章，留作纪念。

参考网址

PHP与C#的压缩与解压

http://www.oschina.net/question/2265205_181108

http://my.oschina.net/linland/blog/217769?fromerr=Kf9b6ElQ

http://www.yiibai.com/sql/function.gzencode.html

https://forums.xamarin.com/discussion/33607/using-system-io-compression-in-pcl

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python的压缩与解压

http://outofmemory.cn/code-snippet/2030/Python-usage-gzip-pack-shujubao
http://www.cnblogs.com/mmix2009/p/3221371.html
http://blog.csdn.net/lxdcyh/article/details/4021476
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javascript的压缩与解压

http://stackoverflow.com/questions/14620769/decompress-gzip-and-zlib-string-in-javascript

http://nodeca.github.io/pako/

代码具体实现

PHP (>=5.4)

$srcString="1";$srcCompress=base64_encode(gzencode($srcString,9));echo strlen($srcCompress).'---压缩后字符串长度<br/>';$newString=base64_decode($srcCompress);$newString=gzdecode($newString);echo $newString.'----解压后原字符串<br/>';

c#

(建议还是考虑各个平台的，PCL版本下的见前面的网址，但是没调试通过)

using System.IO.Compression;using System.Text;public  string Compress (string text){byte[] buffer = Encoding.UTF8.GetBytes (text);using (MemoryStream ms = new MemoryStream ()) {GZipStream Compress = new GZipStream (ms, CompressionMode.Compress);Compress.Write (buffer, 0, buffer.Length);Compress.Close ();return Convert.ToBase64String (ms.ToArray ());}}public string Decompress (string text){byte[] buffer = Convert.FromBase64String (text);using (MemoryStream tempMs = new MemoryStream ()) {using (MemoryStream ms = new MemoryStream (buffer)) {GZipStream Decompress = new GZipStream (ms, CompressionMode.Decompress);Decompress.CopyTo (tempMs);Decompress.Close ();return Encoding.UTF8.GetString (tempMs.ToArray ());}}}

python

#coding=utf-8import base64import StringIO,gzipdef zipData( content):    zbuf = StringIO.StringIO()    zfile = gzip.GzipFile(mode='wb', compresslevel=9, fileobj=zbuf)    zfile.write(content)    zfile.close()    return base64.b64encode(zbuf.getvalue())def unzipData(content):    compresseddata=base64.b64decode(content)    compressedstream = StringIO.StringIO(compresseddata)    gzipper = gzip.GzipFile(fileobj=compressedstream)    data = gzipper.read()    return datas=zipData("1")print ss1=unzipData(s)print s1

javascript

<html><head><meta charset="UTF-8"><script src="http://code.jquery.com/jquery-2.1.4.min.js"></script><script src="https://raw.githubusercontent.com/nodeca/pako/master/dist/pako.js"></script><script type="text/javascript">function gzip(string) {var charData    = string.split('').map(function(x){return x.charCodeAt(0);});var binData     = new Uint8Array(charData);var data= pako.gzip(binData);var strData= String.fromCharCode.apply(null, new Uint16Array(data));return btoa(strData);}function ungzip(string){var strData     = atob(string);var charData    = strData.split('').map(function(x){return x.charCodeAt(0);});var binData     = new Uint8Array(charData);var data= pako.ungzip(binData);var strData= String.fromCharCode.apply(null, new Uint16Array(data));return strData;}test="1";var s=gzip(test);alert(s);alert(ungzip(s));</script></head></html>

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