本文实例讲述了Asp.net程序优化js、css实现合并与压缩的方法。分享给大家供大家参考。具体实现方法如下：
访问时将js和css压缩并且缓存在客户端,
采用的是Yahoo.Yui.Compressor组件来完成的,用户可以点击此处本站下载。
创建一个IHttpHandler来处理文件
public class CombineFiles : IHttpHandler
{
private const string CacheKeyFormat = "_CacheKey_{0}_";
private const bool IsCompress = true; //需要压缩
public bool IsReusable
{
get
{
return false;
}
}
public void ProcessRequest(HttpContext context)
{
HttpRequest request = context.Request;
HttpResponse response = context.Response;
string cachekey = string.Empty;
string type = request.QueryString["type"];
if (!string.IsNullOrEmpty(type) && (type == "css" || type == "js"))
{
if (type == "js")
{
response.ContentType = "text/javascript";
}
else if (type == "css")
{
response.ContentType = "text/css";
}
cachekey = string.Format(CacheKeyFormat, type);
CompressCacheItem cacheItem = HttpRuntime.Cache[cachekey] as CompressCacheItem;
if (cacheItem == null)
{
string content = string.Empty;
string path = context.Server.MapPath("");
//找到这个目录下所有的js或css文件，当然也可以进行配置，需求请求压缩哪些文件
//这里就将所的有文件都请求压缩
string[] files = Directory.GetFiles(path, "*." + type);
StringBuilder sb = new StringBuilder();
foreach (string fileName in files)
{
if (File.Exists(fileName))
{
string readstr = File.ReadAllText(fileName, Encoding.UTF8);
sb.Append(readstr);
}
}
content = sb.ToString();
// 开始压缩文件
if (IsCompress)
{
if (type.Equals("js"))
{
content = JavaScriptCompressor.Compress(content);
}
else if (type.Equals("css"))
{
content = CssCompressor.Compress(content);
}
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