简单注入器-自定义WebViewPage
本文关键字:WebViewPage 自定义 注入器 简单 | 更新日期: 2023-09-27 17:59:27
我(目前)有一个使用翻译的小型应用程序。我的翻译服务叫做翻译(ITranslator)。
我的问题是,我不想在每个控制器(返回一个视图)中检索这个类,所以我可以在视图中使用它。
ListService(我在其中存储所有的SelectListItem
列表)也有类似的问题。
自定义WebViewPage
public abstract class CustomViewPage<TModel> : WebViewPage<TModel>
{
readonly IScriptFactory scriptFactory;
readonly IMembership membership;
readonly IListService listService;
readonly ITranslator translator;
IHtmlString path;
public IMembership Membership { get { return this.membership; } }
public override IPrincipal User { get { return this.membership.User; } }
public IListService Lists { get { return this.listService; } }
public ITranslator Translator { get { return this.translator; } }
public CustomViewPage(IScriptFactory scriptFactory, IMembership membership,
IListService listService, ITranslator translator)
{
this.scriptFactory = scriptFactory;
this.membership = membership;
this.listService = listService;
this.translator = translator;
}
public IHtmlString OwnScriptsPath
{
get { return path ?? (path = scriptFactory.Create(this.Html).ToHtmlString()); }
}
private string languageHtml =
"<meta name='"language'" content='"" + membership.CurrentLanguage + "'">";
public IHtmlString MetaLanguage { get { return MvcHtmlString.Create(languageHtml); } }
}
以及用途:
<div>
@Lists.GetNationalities(Model.NationalityId)
</div>
然而,当运行应用程序时,我会出现以下错误:
'[命名空间]。CustomViewPage"不包含构造函数需要0个参数
但是,如果我创建第二个构造函数,Simple Injector将抛出一个错误,因为它不支持多个构造函数。
我如何才能实现我想要的,或者这不可能吗?
编辑
全堆栈跟踪
c: ''Windows''Microsoft。NET''Framework''v4.0.30119''临时ASP。NET文件''vs''520dfaa2''f5e4578c''App_Web_index.cs.html.a8d08dba.jtlk7fxz.0.cs(40):错误CS1729:"SportsHub。SDK。基础设施自定义视图页面'不包含接受0个参数的构造函数
at System.Web.Compilation.AssemblyBuilder.Compile()
at System.Web.Compilation.BuildProvidersCompiler.PerformBuild()
at System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath)
at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate)
at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate)
at System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean throwIfNotFound) at System.Web.Compilation.BuildManager.GetCompiledType(VirtualPath virtualPath)
at System.Web.Compilation.BuildManager.GetCompiledType(String virtualPath)
at System.Web.Mvc.BuildManagerWrapper.System.Web.Mvc.IBuildManager.GetCompiledType(String virtualPath)
at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<>c__DisplayClass2b.<BeginInvokeAction>b__1c()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult)
编辑2
正如@StriplingWarrior和@Steven所建议的,我使用了属性注入,但它似乎对WebViewPage
不起作用
我在一个服务上测试了它,属性注入是成功的,但在这个类中,属性是null
。
附言:我用get公开了这些房产;设置
新视图页面:
public abstract class CustomViewPage<TModel> : WebViewPage<TModel>
{
[Inject]
public IScriptFactory scriptFactory { get; set; }
[Inject]
public IMembership membership { get; set; }
[Inject]
public IListService listService { get; set; }
[Inject]
public ITranslator translator { get; set; }
IHtmlString scriptsPath;
public IHtmlString OwnScriptsPath()
{
if (scriptsPath == null)
{
scriptsPath = scriptFactory.Create(this.Html).ToHtmlString();
}
return scriptsPath;
}
/// <summary>
/// Renders the current user language with a meta tag
/// </summary>
public IHtmlString MetaLanguage()
{
return MvcHtmlString.Create("<meta name='"language'" content='"" + membership.CurrentLanguage + "'">");
}
对于InjectAttribute
,我遵循了以下文档。
您必须使用这样的寄存器依赖容器。这样,您就可以指定所有的接口,以及当ASP。NET将调用该SimpleInject来解析依赖关系。
您还可以创建这样一个无参数构造函数:
public CustomViewPage() : base(new ScriptFactory(), new Membership()...) { }
但我不建议。。。最好的办法是让这个依赖解析逻辑正常工作。