学习笔记（1）_2008-06-19

1.通过相对路径得到绝对路径：

HttpContext.Current.Server.MapPath(path);

2.生成静态页面

message = "";

            //文件生成路径

            string target = HttpContext.Current.Server.MapPath(path);

            //文件内容和脚本内容

            StringBuilder str = new StringBuilder();

            StringBuilder script = new StringBuilder();

            //单个标签内容和单个脚本内容

            string label = "";

            string tempScript = "";

            //第一个标签开始和结束

            int left = content.IndexOf("┣");

            int right = content.IndexOf("┫");

            //当标签存在，生成标签内容

            while (left >= 0 && right >= 0)

            {

                //标签前面内容直接输出

                str.Append(content.Substring(0, left));

                //得到标签名称

                label = content.Substring(left + 1, right - left - 1);

                //获取标签真实内容，和所需要脚本

                str.Append(getModuleByLabel(label, out tempScript));

                //暂存所有需要脚本

                script.Append(tempScript + "/r/n");

                //模板中已生成的内容截取掉

                content = content.Substring(right + 1);

                //重新设置第一个标签的开始和结束

                left = content.IndexOf("┣");

                right = content.IndexOf("┫");

            }

            //找到body前的最后位置，安置脚本

            left = content.IndexOf("</body>");

            //

            StringBuilder function = new StringBuilder();

            if (!isTest)

            {

                //不是测试页面，需要自动生成首页的js函数

                function.Append("function createPage(date)");

                function.Append("{/r/n");

                function.Append(" var now = new Date().getMinutes();/r/n");

                function.Append(" if(Math.abs(now-date)>1)/r/n");

                function.Append(" {/r/n");

                function.Append("   AjaxSend(function(){},'/kmhome/manage/createKMHome.aspx?action=createHome','');/r/n");

                function.Append(" }/r/n");

                function.Append("}/r/n");

                function.AppendFormat("createPage('{0}');/r/n", DateTime.Now.ToString("mm"));

            }

            if (left >= 0)

            {

                str.Append(content.Substring(0, left));

                str.AppendFormat("/r/n<script type='text/javascript'>/r/n{0}/r/n</script>/r/n", function.ToString());

                str.Append(content.Substring(left));

            }

            else

            {

                str.AppendFormat("/r/n<script type='text/javascript'>/r/n{0}/r/n</script>/r/n", function.ToString());

            }

            str.AppendFormat("<!--LastCreateTime:{0}-->", DateTime.Now);

            string result = "";

            if (!isTest)

            {

                string homePath = "/html/kmhome/";

                //生成首页前先备份旧的index.html

                if (!Directory.Exists(HttpContext.Current.Server.MapPath(homePath + "bak/")))

                {

                    Directory.CreateDirectory(HttpContext.Current.Server.MapPath(homePath + "bak/"));

                }

                string backurl = HttpContext.Current.Server.MapPath(string.Format(homePath + "bak/index_bak_{0}.html", DateTime.Now.ToString("yyyy-MM-dd_HH_mm")));

                if (File.Exists(backurl))

                {

                    File.Delete(backurl);

                }

                if (File.Exists(target))

                {

                    File.Move(target, backurl);

                }

            }

            try

            {

                using (StreamWriter writer = new StreamWriter(target, false, Encoding.GetEncoding("utf-8")))

                {

                    writer.Write(str.ToString());

                    writer.Close();

                    string key = "KmHomeModulse";

                    if (HttpContext.Current.Cache[key] != null)

                    {

                        HttpContext.Current.Cache.Remove(key);

                    }

                    message = "首页文件生成成功。";

                }

            }

            catch (Exception ex)

            {

                message = ex.Message;

                return false;

            }

            return true;

3.判断文件夹是否存在

 if (!Directory.Exists(HttpContext.Current.Server.MapPath(homePath + "bak/")))

                {

                    Directory.CreateDirectory(HttpContext.Current.Server.MapPath(homePath + "bak/"));

                }

                string backurl = HttpContext.Current.Server.MapPath(string.Format(homePath + "bak/index_bak_{0}.html", DateTime.Now.ToString("yyyy-MM-dd_HH_mm")));

                if (File.Exists(backurl))

                {

                    File.Delete(backurl);

                }

                if (File.Exists(target))

                {

                    File.Move(target, backurl);

                }