asp.net中js合并，压缩

紧接着上一篇文章js文件合并压缩去掉重复引用缓存延迟加载http://www.zzzyk.com/kf/201205/130024.html来说，遗留了一个很大的问题那就是js文本怎么合并与压缩了，上一篇文章中的

[csharp]
public static void AppendJsFile(this HtmlHelper htmlHelper, string jsFile, int group = 1)
public static MvcHtmlString RenderJsFile(this HtmlHelper htmlHelper)
都只限于MVC中使用，我们能不能搞一个更通用的东东了，答案是肯定的。
先说说思路吧，其实很简单就是我们自己接管输出流，如何接管了？在Global.asax文件中添加以下代码：

[csharp]
public override void Init()
      {
          base.Init();
          this.ReleaseRequestState += new EventHandler(InstallResponseFilter);
      }
      private void InstallResponseFilter(object sender, EventArgs e)
      {
          HttpResponse response = HttpContext.Current.Response;

          if (response.ContentType == "text/html")
              response.Filter = new PageFilter(response.Filter);
      }
我还是沿用先前的项目做demo吧

和我们平时的开发没有任何区别，但是返回结果却是如下

我们看到js文件和js文本都合并并且也是压缩了的。

关键的一切还是PageFilter的功劳啊

代码如下：

[html]
public class PageFilter : Stream
   {
       Stream responseStream;
       long position;
       StringBuilder responseHtml;

       public PageFilter(Stream inputStream)
       {
           responseStream = inputStream;
           responseHtml = new StringBuilder();
       }

       #region Filter overrides
       public override bool CanRead
       {
           get { return true; }
       }

       public override bool CanSeek
       {
           get { return true; }
       }

       public override bool CanWrite
       {
           get { return true; }
       }

       public override void Close()
       {
           responseStream.Close();
       }

       public override void Flush()
       {
           responseStream.Flush();
       }

       public override long Length
       {
           get { return 0; }
       }

       public override long Position
       {
           get { return position; }
           set { position = value; }
       }

       public override long Seek(long offset, SeekOrigin origin)
       {
           return responseStream.Seek(offset, origin);
       }

       public override void SetLength(long length)
       {
           responseStream.SetLength(length);
       }

       public override int Read(byte[] buffer, int offset, int count)
       {
           return responseStream.Read(buffer, offset, count);
       }
       #endregion

       #region Dirty work
       public override void Write(byte[] buffer, int offset, int count)
       {
           HttpResponse response = HttpContext.Current.Response;
           string charset = response.Charset ?? "utf-8";
           string strBuffer = Encoding.GetEncoding(charset).GetString(buffer, offset, count);


           int bodyindex = strBuffer.ToLower().LastIndexOf("</body>");
             //js文本
           Regex reg = new Regex("<script[^>]*>(?<content>[^<]*)</script>",RegexOptions.IgnoreCase|RegexOptions.Multiline);
           //js引用
           Regex regSrc = new Regex("src=\"?(?<src>[^'\">]*)\"?",RegexOptions.IgnoreCase|RegexOptions.Multiline);
           StringBuilder jsContent = new StringBuilder();
           List<string> jsSrc = new List<string>();

           MatchCollection mc = reg.Matches(strBuffer);

           if (mc.Count > 0)
           {
          &nbs

补充：Web开发 , ASP.Net ,