Discuz2.5菜鸟解析－2

接着上一节我们讲到的Install，我们接着来看第二步的实现。

在这个页面中检测的功能，主要是通过以下这段代码来实现检测功能，呵呵，还是用的字符串拼接输出，呵呵，晕没有办法，Discuz的程序员就是这样写的。》

   1:  <%

   2:       bool err = false;

   3:       string result = SetupPage.InitialSystemValidCheck(ref err);

   4:       Response.Write("<font color=red>"+result+"</font>");

   5:  %>

具体的实现代码如下：

   1:  public static string InitialSystemValidCheck(ref bool error)

   2:  {

   3:      error = false;

   4:      StringBuilder sb = new StringBuilder();

   5:      sb.Append("<table cellSpacing='0' cellPadding='0' width='90%' align='center' border='0' 

   6:                 bgcolor='#666666' style='font-size:12px'>");

   7:   

   8:      HttpContext context = HttpContext.Current;

   9:   

  10:      string filename = null;

  11:      if (context != null)

  12:          filename = context.Server.MapPath("/DNT.config");

  13:      else

  14:          filename = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "DNT.config");

  15:   

  16:      //系统BIN目录检查

  17:      sb.Append(IISSystemBINCheck(ref error));

  18:   

  19:   

  20:      //            GetRootDntconfigPath();

  21:      //检查Dnt.config文件的有效性

  22:      if (!GetRootDntconfigPath())

  23:      {

  24:          sb.Append("<tr style=\"height:15px\"><td bgcolor='#ffffff' width='5%'><img src='images/error.gif' 

  25:                     width='16' height='16'></td><td bgcolor='#ffffff' width='95%'> DNT.config 

  26:                     不可写或没有放置正确, 相关问题详见安装文档!</td></tr>");

  27:          error = true;

  28:      }

  29:      else

  30:      {

  31:          sb.Append("<tr style=\"height:15px\"><td bgcolor='#ffffff' width='5%'><img src='images/ok.gif' 

  32:                     width='16' height='16'></td><td bgcolor='#ffffff' width='95%'>对 DNT.config 验证通过!</td>

  33:                    </tr>");

  34:      }

  35:   

  36:   

  37:      //检查系统目录的有效性

  38:      string folderstr = "admin,aspx,avatars,cache,config,editor,images,templates,upload";

  39:      foreach (string foldler in folderstr.Split(','))

  40:      {

  41:          if (!SystemFolderCheck(foldler))

  42:          {

  43:              sb.Append("<tr><td bgcolor='#ffffff' width='5%'><img src='images/error.gif' width='16' height='16'>

  44:                        </td><td bgcolor='#ffffff' width='95%'>对 " + foldler + " 目录没有写入和删除权限!</td>

  45:                        </tr>");

  46:              error = true;

  47:          }

  48:          else

  49:          {

  50:              sb.Append("<tr><td bgcolor='#ffffff' width='5%'><img src='images/ok.gif' width='16' height='16'>

  51:                </td><td bgcolor='#ffffff' width='95%'>对 " + foldler + " 目录权限验证通过!</td></tr>");

  52:          }

  53:      }

  54:      string filestr = "admin\\xml\\navmenu.config,javascript\\mymenu.js,install\\systemfile.aspx,upgrade

  55:                       \\systemfile.aspx";

  56:      foreach (string file in filestr.Split(','))

  57:      {

  58:          if (!SystemFileCheck(file))

  59:          {

  60:              sb.Append("<tr><td bgcolor='#ffffff' width='5%'><img src='images/error.gif' width='16' height='16'>

  61:                        </td><td bgcolor='#ffffff' width='95%'>对 " + file.Substring(0,file.LastIndexOf('\\')) +

  62:                        " 目录没有写入和删除权限!</td></tr>");

  63:              error = true;

  64:          }

  65:          else

  66:          {

  67:              sb.Append("<tr><td bgcolor='#ffffff' width='5%'><img src='images/ok.gif' width='16' height='16'>

  68:              </td><td bgcolor='#ffffff' width='95%'>对 " + file.Substring(0, file.LastIndexOf('\\')) + 

  69:              " 目录权限验证通过!</td></tr>");

  70:          }

  71:      }

  72:   

  73:     if(!TempTest())

  74:     {

  75:         sb.Append("<tr><td bgcolor='#ffffff' width='5%'><img src='images/error.gif' width='16' height='16'>

  76:                  </td><td bgcolor='#ffffff' width='95%'>您没有对 " + Path.GetTempPath() + 

  77:                  " 文件夹访问权限，详情参见安装文档.</td></tr>");

  78:         error = true;

  79:     }

  80:     else

  81:     {

  82:      if (!SerialiazeTest())

  83:      {

  84:          sb.Append("<tr><td bgcolor='#ffffff' width='5%'><img src='images/error.gif' width='16' height='16'>

  85:                     </td><td bgcolor='#ffffff' width='95%'>对config文件反序列化失败，详情参见安装文档.</td>

  86:                    </tr>");

  87:          error = true;

  88:      }

  89:      else

  90:      {

  91:          sb.Append("<tr><td bgcolor='#ffffff' width='5%'><img src='images/ok.gif' width='16' height='16'>

  92:                 </td><td bgcolor='#ffffff' width='95%'>反序列化验证通过！</td></tr>");

  93:      } 

  94:     }

  95:      sb.Append("</table>");

  96:   

  97:      return sb.ToString();

  98:  }

在以上程序中，它首先会去检测DNT.Config文件的有效性

   1:    string filename = null;

   2:     if (context != null)

   3:                  filename = context.Server.MapPath("/DNT.config");

   4:     else

   5:                  filename = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "DNT.config");

接着再去检测IIS目录中的DLL是否存在的有效性：

   1:   public static string IISSystemBINCheck(ref bool error)

   2:   {

   3:       string binfolderpath = HttpRuntime.BinDirectory;

   4:   

   5:       string result = "";

   6:       try

   7:       {

   8:           string[] assemblylist = new string[] { "Discuz.Aggregation.dll", "Discuz.Cache.dll", 

   9:                                                  "Discuz.Common.dll", "Discuz.Config.dll", 

  10:               "Discuz.Control.dll", "Discuz.Data.dll", "Discuz.Data.SqlServer.dll","Discuz.Entity.dll",

  11:               "Discuz.Event.dll", "Discuz.Forum.dll",

  12:               "Discuz.Install.dll", "Discuz.Plugin.dll","Discuz.Plugin.Preview.Jpg.dll",

  13:               "Discuz.Plugin.Spread.dll", "Discuz.Web.Admin.dll",

  14:               "Discuz.Web.dll", "Discuz.Web.Services.dll","Interop.SQLDMO.dll","Newtonsoft.Json.dll" };

  15:           bool isAssemblyInexistence = false;

  16:           ArrayList inexistenceAssemblyList = new ArrayList();

  17:           foreach (string assembly in assemblylist)

  18:           {

  19:               if (!File.Exists(binfolderpath + assembly))

  20:               {

  21:                   isAssemblyInexistence = true;

  22:                   error = true;

  23:                   inexistenceAssemblyList.Add(assembly);

  24:               }

  25:           }

  26:           if (isAssemblyInexistence)

  27:           {

  28:               foreach (string assembly in inexistenceAssemblyList)

  29:               {

  30:                       result += "<tr><td bgcolor='#ffffff' width='5%'><img src='images/error.gif' 

  31:                                 width='16' height='16'></td><td bgcolor='#ffffff' width='95%'>" + assembly + 

  32:                                " 文件放置不正确<br/>请将所有的dll文件复制到目录 " + binfolderpath + 

  33:                                " 中.</td></tr>";

  34:               }

  35:           }

  36:       }

  37:       catch

  38:       {

  39:           result += "<tr><td bgcolor='#ffffff' width='5%'><img src='images/error.gif' width='16' height='16'>

  40:                     </td><td bgcolor='#ffffff' width='95%'>请将所有的dll文件复制到目录 " + binfolderpath 

  41:                      + " 中.</td></tr>";

  42:           error = true;

  43:       }

  44:   

  45:       return result;

  46:   }

在以上代码中用到了一些不常用的类，比如HttpRuntime类，我们过HttpRuntime这个类中的BinDirectory这个属性找到WEB程序所用到的bin目录，

之后用IO中的File.Exist来检测这个文件是否存在，不过我再一次的问一下，难道Discuz的程序员不知道@号的存在？？？,再一个就是对StringBuilder

在程序中的性能问题表示怀疑。

 

再接下来是检测Dnt.config文件的有效性：

   1:   public static bool GetRootDntconfigPath()

   2:   {

   3:       try

   4:       {

   5:   

   6:           HttpContext context = HttpContext.Current;

   7:           string webconfigfile = "";

   8:           if (!Utils.FileExists(webconfigfile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "DNT.config"))

   9:               && (!Utils.FileExists(webconfigfile = Path.Combine(context.Request.PhysicalApplicationPath, "dnt.config")))

  10:               && (!Utils.FileExists(webconfigfile = Utils.GetMapPath("../dnt.config")))

  11:               && (!Utils.FileExists(webconfigfile = Utils.GetMapPath("http://www.cnblogs.com/dnt.config")))

  12:               && (!Utils.FileExists(webconfigfile = Utils.GetMapPath("http://www.cnblogs.com/../dnt.config"))))

  13:           {

  14:               return false;

  15:           }

  16:           else

  17:           {

  18:               StreamReader sr = new StreamReader(webconfigfile);

  19:               string content = sr.ReadToEnd();

  20:               sr.Close();

  21:               content += " ";

  22:               StreamWriter sw = new StreamWriter(webconfigfile, false);

  23:               sw.Write(content);

  24:               sw.Close();

  25:               return true;

  26:           }

  27:       }

  28:       catch

  29:       {

  30:           return false;

  31:       }

  32:   }

在这个检测的过程中用到了Discuz.Common中的Utils.cs这个类，这个类中主要是提供了一些工具类的支持，呵呵。其中有一些真的是不错的，以后可以

拿来借鉴一下。

为了方便 大家理解我做了一张思维图，供大家分析。

 

其中的SerialiazeTest()成员方法中用到了序列化的功能。在下一小节中再继续分析。