asp.net 访问页面访问统计实现 for iis7

 上一篇博文中《 asp.net 访问页面访问统计实现  》 中在win10 （iis8+）上运行没有问题，

但客户机子是windows server 2008  的 iis7弄死不对，最好加

<system.web>...<customErrors mode="Off"/>...</system.web>

把问题找到了！

1、_Cache = new System.Web.Caching.Cache(); （iis7不支持）

_Cache = HttpContext.Current.Cache;（更改为）

2、System.Timers.Timer（iis7触发不到事件）

System.Threading.Timer(更改为)

0x01、核心代码（更改为）：

1、实现Http拦截操作，核心代码就是这一个了：

using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Configuration;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Threading;
using System.Web;
using System.Xml;

namespace HYSWare.Web
{
    public class CurVisitCount {
        public DateTime BeginTime{get;set;}
        public int Count { get; set; }
    }

    public class RequestHandler : IHttpModule
    {
        private static System.Threading.Timer timer1;
        private static System.Web.Caching.Cache _Cache;
        private int _IntervalMinute;

        public int IntervalMinute
        {
            get
            {
                string _IntervalMinuteStr = ConfigurationManager.AppSettings["IntervalMinute"];

                if (string.IsNullOrEmpty(_IntervalMinuteStr))
                {
                    _IntervalMinute = 5;
                }
                else
                {
                    _IntervalMinute = Convert.ToInt32(_IntervalMinuteStr);
                }

                return _IntervalMinute;
            }
        }

        public RequestHandler()
        {
            if (_Cache == null)
            {
                _Cache = HttpContext.Current.Cache;// new System.Web.Caching.Cache();
            }
            if (timer1 == null)
            {
                var autoEvent = new AutoResetEvent(false);
                timer1 = new Timer(p => FlushData(), autoEvent, 0, IntervalMinute * 60000);

                //timer1 = new System.Timers.Timer(IntervalMinute * 60000);
                //timer1.Elapsed += new System.Timers.ElapsedEventHandler(timer1_Tick);
                //timer1.AutoReset = true;//设置是执行一次（false）还是一直执行(true)； 
                //timer1.Enabled = true;//是否执行System.Timers.Timer.Elapsed事件；
            }



            if (_Cache["CurVisitCount"]==null)
                _Cache["CurVisitCount"] = new CurVisitCount { BeginTime = DateTime.Now, Count = 0 };
            if (_Cache["VisitCount"] == null)
                _Cache["VisitCount"]="0";
        }

        

        void IHttpModule.Dispose()
        {
        }

        void IHttpModule.Init(HttpApplication context)
        {
            context.BeginRequest += new EventHandler(context_BeginRequest);
            //context.EndRequest += new EventHandler(context_EndRequest);
        }

        void context_BeginRequest(object sender, EventArgs e)
        {
            string[] requestEx = { ".aspx",".htm", ".html"};

            HttpApplication application = (HttpApplication)sender;
            var curRequest = application.Context.Request;
            if (requestEx.Contains(curRequest.CurrentExecutionFilePathExtension)) {
            if (_Cache["CurVisitCount"] == null)
                _Cache["CurVisitCount"]=new CurVisitCount { BeginTime = DateTime.Now, Count = 1 };
            CurVisitCount curVisitCount = (CurVisitCount)_Cache["CurVisitCount"];
            if (curVisitCount.BeginTime.Year + curVisitCount.BeginTime.Month < DateTime.Now.Year + DateTime.Now.Month)
            {
                UpdateVisitCount(curVisitCount.BeginTime);
                curVisitCount = (CurVisitCount)_Cache["CurVisitCount"];
            }
            curVisitCount.Count += 1;
            _Cache["CurVisitCount"] = curVisitCount;

            if (_Cache["VisitCountXml"] == null)
                _Cache["VisitCountXml"] = GetVisitCountInXml();
            int visitCountXml = 0;
            int.TryParse(_Cache["VisitCountXml"].ToString(),out visitCountXml);

            _Cache["VisitCount"] = (visitCountXml + curVisitCount.Count).ToString();

            }
            //application.Context.Response.Write("自定义ModuleRequest开始");
        }

        private int GetVisitCountInXml()
        {
            int ret = 0;
            string _VisitPath = AppDomain.CurrentDomain.BaseDirectory + "App_Data\\Xml\\VisitCountData.xml";
            XmlDocument doc = new XmlDocument();
            if (File.Exists(_VisitPath))
            {
                doc.Load(_VisitPath);
                var curNode = doc.SelectNodes("//Visit");
                foreach (XmlNode m in curNode) {
                    var countAttr = m.Attributes.GetNamedItem("VCount");
                    int v = 0;
                    int.TryParse(countAttr.Value, out v);
                    ret += v;
                }
            }
            return ret;
        }

        private void UpdateVisitCount(DateTime time)
        {
            if (_Cache["CurVisitCount"] == null)
                _Cache["CurVisitCount"]= new CurVisitCount { BeginTime = DateTime.Now, Count = 0 };
            CurVisitCount curVisitCount = (CurVisitCount)_Cache["CurVisitCount"];
            if (curVisitCount.Count > 0)
            {
                string _VisitPath = AppDomain.CurrentDomain.BaseDirectory + "App_Data\\Xml\\VisitCountData.xml";
                XmlDocument doc = new XmlDocument();

                if (File.Exists(_VisitPath))
                {
                    doc.Load(_VisitPath);
                    var curNode = doc.SelectSingleNode(string.Format("//Visit[@Year='{0}' and @Month='{1}']", time.Year, time.Month));
                    if (curNode != null)
                    {
                        var countAttr = curNode.Attributes.GetNamedItem("VCount");
                        int count = 0;
                        int.TryParse(countAttr.Value, out count);
                        countAttr.Value = (count + curVisitCount.Count).ToString();
                    }
                    else
                    {
                        //有文件但没有本月数据
                        XmlNode root = doc.SelectSingleNode("Visits");
                        XmlElement element1 = doc.CreateElement("Visit");
                        element1.SetAttribute("Year", time.Year.ToString());
                        element1.SetAttribute("Month", time.Month.ToString());
                        element1.SetAttribute("VCount", curVisitCount.Count.ToString());
                        root.AppendChild(element1);
                    }
                }
                else
                {
                    XmlDeclaration dec = doc.CreateXmlDeclaration("1.0", "utf-8", null);
                    doc.AppendChild(dec);

                    //创建一个根节点（一级）
                    XmlElement root = doc.CreateElement("Visits");
                    doc.AppendChild(root);
                    //创建节点（二级）
                    XmlElement element1 = doc.CreateElement("Visit");
                    element1.SetAttribute("Year", time.Year.ToString());
                    element1.SetAttribute("Month", time.Month.ToString());
                    element1.SetAttribute("VCount", curVisitCount.ToString());
                    root.AppendChild(element1);
                }
                doc.Save(_VisitPath);

                _Cache["VisitCountXml"] = GetVisitCountInXml();
                _Cache["VisitCount"] = _Cache["VisitCountXml"];
                _Cache["CurVisitCount"] = new CurVisitCount { BeginTime = DateTime.Now, Count = 0 };
            }
        }


        void FlushData()
        {
            UpdateVisitCount(DateTime.Now);
        }

        //private void timer1_Tick(object sender, EventArgs e)
        //{
        //    UpdateVisitCount(DateTime.Now);
        //}
    }
}