WebAPI控制器分离

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默认情况下webapi从当前应用程序域加载控制器，我们可以通过继承DefaultAssembliesResolver类来从新配置入口

需要从写GetAssemblies方法，我们把控制器单独拎出到一个类库中，然后编译控制器所在的类库，并将相关的依赖dll（系统dll除外）拿出来，然后

装载这些dll

    /// <summary>    /// 装载控制器    /// </summary>    internal class ControllerResolver : DefaultAssembliesResolver    {        public override ICollection<Assembly> GetAssemblies()        {            var apiController = LoadController();            return apiController;        }        private ICollection<Assembly> LoadController()        {            // return AppDomain.CurrentDomain.GetAssemblies().ToList<Assembly>();            const string apiPath = "webapi"; //应用程序根目录下的webapi文件夹中存放api文件              const string ctlfile = ".dll";   //加载的pai文件的扩展名须是dll            ICollection<Assembly> baseAssemblies = base.GetAssemblies();            var apipath = AppDomain.CurrentDomain.BaseDirectory + string.Format("\\{0}\\", apiPath);            if (Directory.Exists(apipath))            {                var apifiles = Directory.GetFiles(apipath, "*" + ctlfile)                                .Where(t => t.ToLower().EndsWith(ctlfile)) //过滤                                  .ToList();                foreach (var apidll in apifiles)                {                    baseAssemblies.Add(Assembly.LoadFrom(apidll));                }            }            return baseAssemblies;        }    }

具体的描述注解中有说明，主要是把dll放到app的根目录下的webapi文件夹中，然后加载进去。详细点的可以看大神的文章：

http://www.cnblogs.com/artech/p/custom-assembly-resolver.html

注意，依赖的dll需要一并放入，不然控制器的初始化会失败

//另一种方式处理：

AppDomain.CurrentDomain.AssemblyResolve += delegate(object sender, ResolveEventArgs senderArgs)            {                Assembly executingAssembly = Assembly.GetExecutingAssembly();                //string name = new AssemblyName(executingAssembly.FullName).Name;                string str2 = new AssemblyName(senderArgs.Name).Name;                string str3 = str2 + ".dll";                using (Stream stream = executingAssembly.GetManifestResourceStream(str3))                {                    byte[] buffer = new byte[stream.Length];                    stream.Read(buffer, 0, buffer.Length);                    return Assembly.Load(buffer);                }            };

==========================================分割线【改进】=============================================

private ICollection<Assembly> LoadController()        {            const string apiPath = "webapi"; //应用程序根目录下的webapi文件夹中存放api文件              const string ctlfile = ".dll";   //加载的pai文件的扩展名须是dll            //AppDomain.Unload(...)            //AppDomain.CurrentDomain.GetAssemblies()            ICollection<Assembly> baseAssemblies = base.GetAssemblies();            var apipath = AppDomain.CurrentDomain.BaseDirectory + string.Format("{0}\\", apiPath);            if (Directory.Exists(apipath))            {                var apifiles = Directory.GetFiles(apipath, "*" + ctlfile)                                .Where(t => t.ToLower().EndsWith(ctlfile))                                .ToList();                foreach (var apidll in apifiles)                {                    var tempAsm = Assembly.LoadFrom(apidll); //注意此处会有异常                    if (baseAssemblies.Any(x => x.FullName == tempAsm.FullName))                    {                        Console.WriteLine(tempAsm.FullName + " 程序集已加载");                        continue;                    }                    baseAssemblies.Add(tempAsm);                }            }            return baseAssemblies;        }

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