通过Fiddler2 Customize Rule下载mp3

原文链接：http://www.cnblogs.com/pagsun/archive/2009/07/26/1531280.html

    平时上网时总是习惯开着Google Music随便选些歌听，但是现在的办公地点不能访问互联网，以前只好把想听的mp3都逐一下载到电脑中，每次更新歌曲库都很麻烦，想分析Google Music中提供的下载mp3流程单独写段自动下载的程序又没有什么好的思路，就想到可以通过Fiddler2 Customize Rule拦截Http请求，通过设置过滤条件当发现在线听歌过程中请求到某个mp3文件时就自动下载到指定目录中。

    实现方法如下：

    在OnBeforeRequest方法中添加如下代码（由于没搞懂Fiddler2中添加程序集引用的逻辑，一些CLR中的类型调用都是使用反射来完成的）：

 

   1: if(oSession.fullUrl.Contains("top100.cn") && oSession.uriContains(".mp3"))

   2:     {

   3:         var temp: String = oSession.url;

   4:                     

   5:         temp = temp.Substring(temp.LastIndexOf("/")+1);

   6:         temp = temp.Substring(0,temp.IndexOf("."));

   7:         

   8:         var type: Type = Type.GetType("System.Web.HttpUtility, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a");

   9:         

  10:         var types: Type[] = new Type[1];

  11:         types[0] = Type.GetType("System.String");

  12:         

  13:         var method: System.Reflection.MethodInfo = type.GetMethod("UrlDecode", types);

  14:         

  15:         var objects: Object[] = new Object[1];

  16:         objects[0] = temp;

  17:         

  18:         var result : Object = method.Invoke(temp, objects);

  19:         

  20:         

  21:         temp = "C:\\Users\\Pag\\Downloads\\"+result.ToString()+".mp3";

  22:         

  23:         if(!System.IO.File.Exists(temp))

  24:         {

  25:             type = Type.GetType("System.Net.WebClient, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089");

  26:         

  27:             var client: Object = System.Activator.CreateInstance(type);

  28:         

  29:             types = new Type[2];

  30:             types[0] = Type.GetType("System.String");

  31:             types[1] = Type.GetType("System.String");

  32:         

  33:             method = type.GetMethod("DownloadFile",types);

  34:         

  35:             objects = new Object[2];

  36:             objects[0] = oSession.fullUrl;

  37:             objects[1] = temp;

  38:         

  39:             method.Invoke(client,objects);

  40:         

  41:             method = type.GetMethod("Dispose");

  42:         

  43:             objects = new Object[0]

  44:             method.Invoke(client,objects);

  45:         }

  46:     }

 

编辑Customize Rule需要安装Fiddler2的插件：FiddlerScript Editor，这个插件可以通过安装Syntax-Highlighting Addons获得。

参考链接：FiddlerScript CookBook

转载于:https://www.cnblogs.com/pagsun/archive/2009/07/26/1531280.html

标签：temp,Customize,System,Rule,objects,mp3,var,Type,types
来源： https://blog.csdn.net/weixin_30372371/article/details/99190636