C# · 12月 25, 2021

c# – Unity 3和错误“无法解析类型名称或别名”xxxxx“.请检查您的配置文件并验证此类型名称.“

有没有办法解决Unity 3的这个问题?

我已经尽一切可能绕过这个消息错误,但我无法解决;我已经做了我在googles搜索中看到的所有内容.

我几乎放弃并尝试另一种DI解决方案.

我的配置文件:

<?xml version=”1.0″ encoding=”utf-8″ ?><configuration> <configSections> <section name=”unity” type=”Microsoft.Practices.Unity.Configuration.UnityConfigurationSection,Microsoft.Practices.Unity.Configuration” /> </configSections> <unity xmlns=”http://schemas.microsoft.com/practices/2010/unity”> <assembly name=”Biblioteca” /> <assembly name=”Biblioteca.Contracts” /> <assembly name=”Biblioteca.Business” /> <namespace name=”Biblioteca” /> <namespace name=”Biblioteca.Contracts” /> <namespace name=”Biblioteca.Business” /> <container> <register type=”Biblioteca.Contracts.IManterCategoriaBO” mapTo=”Biblioteca.Business.ManterCategoriaBO” /> </container> </unity></configuration>

我的界面:

using Biblioteca.Transport;using System.Linq;namespace Biblioteca.Contracts{ public interface IManterCategoriaBO { IQueryable<CategoriaDTO> GetAll(); CategoriaDTO GetById(int id); void Insert(CategoriaDTO dto); }}

我的具体课程:

using Biblioteca.Contracts;using Biblioteca.Transport;using Biblioteca.Data;using System;using System.Linq;namespace Biblioteca.Business{ public class ManterCategoriaBO : IManterCategoriaBO { public CategoriaDTO GetById(int id) { CategoriaDTO dto = new CategoriaDTO(); ManterCategoriaDO categoriaDO = new ManterCategoriaDO(); dto = categoriaDO.GetById(1); return dto; } public IQueryable<CategoriaDTO> GetAll() { throw new NotImplementedException(); } public void Insert(CategoriaDTO dto) { throw new NotImplementedException(); } }}

我的Global.asax:

using System.Web.Http;using System.Web.Mvc;using System.Web.Optimization;using System.Web.Routing;using Biblioteca.Dependency;namespace Biblioteca{ // Note: For instructions on enabling IIS6 or IIS7 classic mode,// visit http://go.microsoft.com/?LinkId=9394801 public class MvcApplication : System.Web.HttpApplication { protected void Application_Start() { AreaRegistration.RegisterAllAreas(); WebApiConfig.Register(GlobalConfiguration.Configuration); FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters); RouteConfig.RegisterRoutes(RouteTable.Routes); BundleConfig.RegisterBundles(BundleTable.Bundles); //Below is a static variable to take the unity container //which is on a dependency project Global.Container = Bootstrapper.Initialise(); } }}

我的Bootstrapper类:

using Microsoft.Practices.Unity;using Microsoft.Practices.Unity.Configuration;using System.Configuration;using System.Web.Mvc;using Unity.Mvc4;namespace Biblioteca{ public static class Bootstrapper { public static IUnityContainer Initialise() { var container = BuildUnityContainer(); DependencyResolver.SetResolver(new UnityDependencyResolver(container)); return container; } private static IUnityContainer BuildUnityContainer() { string path = ConfigurationManager.AppSettings[“UnityConfigFilePath”].ToString(); var fileMap = new ExeConfigurationFileMap() { ExeConfigFilename = path + “\\Unity.config” }; System.Configuration.Configuration configuration = ConfigurationManager.OpenMappedExeConfiguration(fileMap,ConfigurationUserLevel.None); var unitySection = (UnityConfigurationSection)configuration.GetSection(“unity”); //*** this line is firing the error !!! **** var container = new UnityContainer().LoadConfiguration(unitySection); return container; } }}

我的Dependency项目静态类:

using Microsoft.Practices.Unity;namespace Biblioteca.Dependency{ public static class Global { public static IUnityContainer Container = null; public static T Resolve<T>() { return Container.Resolve<T>(); } }}

我在MVC 4项目上的UI模型类文件.我正在使用4.5框架.

using Biblioteca.Contracts;using Biblioteca.Dependency;namespace Biblioteca.Models{ public class LivroModel { public void GetAll() { if (Global.Container != null) { var categoriaBO = Global.Resolve<IManterCategoriaBO>(); categoriaBO.GetById(1); } } }}

我认为一切都是正确的.但是,我看不到这个DI工作原因导致我在映射过程中出现错误,在我的Bootstrapper类,BuildUnityContainer方法下面的行中:

var container = new UnityContainer().LoadConfiguration(unitySection);

错误是:

The type name or alias Biblioteca.Contracts.IManterCategoriaBO Could
not be resolved. Please check your configuration file and verify this
type name.

我已经仔细检查了所有课程,对我来说,他们还可以.还是缺少什​​么?

解决方法 问题在于配置文件.您正在使用一些不正确的语法混合两个概念.

< assembly … />和< namespace … />当您的< register … />时,节点提供程序集和命名空间搜索顺序node包含一个自身无法找到的类型.如果找不到类型,它会搜索[namespace] .Type,[assembly]的所有组合.这是错误的位置:它不搜索Type,[assembly].如果有任何< namespace … />节点已定义,它不会尝试只附加程序集.

所以你的< register type =“Biblioteca.Contracts.IManterCategoriaBO”mapTo =“Biblioteca.Business.ManterCategoriaBO”/>节点的类型为Biblioteca.Contracts.IManterCategoriaBO,它不包含程序集,因此无法找到它.因此,它需要进行搜索.您确实指定了< namespace … />节点,所以它将首先尝试Biblioteca.Biblioteca.Contracts.IManterCategoriaBO,Biblioteca.请注意重复的Biblioteca名称.

这是一个更正的配置文件.

<?xml version=”1.0″ encoding=”utf-8″ ?><configuration> <configSections> <section name=”unity” type=”Microsoft.Practices.Unity.Configuration.UnityConfigurationSection,Microsoft.Practices.Unity.Configuration” /> </configSections> <unity xmlns=”http://schemas.microsoft.com/practices/2010/unity”> <assembly name=”Biblioteca” /> <assembly name=”Biblioteca.Contracts” /> <assembly name=”Biblioteca.Business” /> <namespace name=”Biblioteca” /> <namespace name=”Biblioteca.Contracts” /> <namespace name=”Biblioteca.Business” /> <container> <register type=”IManterCategoriaBO” mapTo=”ManterCategoriaBO” /> <!– Or this works –> <!–<register type=”Biblioteca.Contracts.IManterCategoriaBO,Biblioteca” mapTo=”Biblioteca.Business.ManterCategoriaBO,Biblioteca” />–> </container> </unity></configuration>