APS.NET MVC 对输出HTML源码进行压缩

思路：增加一个Controller基类，用于压缩输出的HTML源代码，对输出html内容里的空格回车换行符等进行移除，需要压缩的Controller继承自这个基类即可。

如果js结尾不写分号的话，压缩后，页面脚本会受影响，按标准写的代码不会有影响，目前在我自己的项目中使用，尚未发现什么问题。

using System.IO;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;
using System.Web.Mvc;
using System.Web.UI;

namespace RC.Foundation.UI
{
    public class BaseController : Controller
    {
        /// <summary>
        ///     压缩html代码
        /// </summary>
        /// <param name="text">html代码</param>
        /// <returns></returns>
        private static string Compress(string text)
        {
            var reg = new Regex(@"\s*(</?[^\s/>]+[^>]*>)\s+(</?[^\s/>]+[^>]*>)\s*");
            text = reg.Replace(text, m => m.Groups[1].Value + m.Groups[2].Value);

            //移除html标签之间的空格 
            text = new Regex(@"(?<=>)[\s|\n|\t]*(?=<)").Replace(text, string.Empty);

            //移除多余空格和换行符
            text = new Regex(@"\n+\s+").Replace(text, string.Empty);

            return text;
        }

        /// <summary>
        ///     在执行Action的时候，就把需要的Writer存起来
        /// </summary>
        /// <param name="filterContext">上下文</param>
        protected override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            _builder = new StringBuilder();
            _writer = new StringWriter(_builder);
            _htmlWriter = new HtmlTextWriter(_writer);
            _output = (HttpWriter) filterContext.RequestContext.HttpContext.Response.Output;
            filterContext.RequestContext.HttpContext.Response.Output = _htmlWriter;
            base.OnActionExecuting(filterContext);
        }

        /// <summary>
        ///     在执行完成后，处理得到的HTML，并将他输出到前台
        /// </summary>
        /// <param name="filterContext"></param>
        protected override void OnResultExecuted(ResultExecutedContext filterContext)
        {
            var response = Compress(_builder.ToString());
            _output.Write(response);
        }

        #region Private

        /// <summary>
        ///     HtmlTextWriter
        /// </summary>
        private HtmlTextWriter _htmlWriter;

        /// <summary>
        ///     StringWriter
        /// </summary>
        private StringWriter _writer;

        /// <summary>
        ///     StringBuilder
        /// </summary>
        private StringBuilder _builder;

        /// <summary>
        ///     HttpWriter
        /// </summary>
        private HttpWriter _output;

        #endregion
    }
}

输出结果类似这样：