public Task ApplyAsync(HttpContext httpContext, EndpointSelectorContext context, CandidateSet candidates)
{
if (httpContext == null)
{
throw new ArgumentNullException(nameof(httpContext));
}
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (candidates == null)
{
throw new ArgumentNullException(nameof(candidates));
}
for (var i = 0; i < candidates.Count; i++)
{
ref var candidate = ref candidates[i];
var endpoint = (RouteEndpoint)candidate.Endpoint;
var page = endpoint.Metadata.GetMetadata <PageActionDescriptor>();
if (page != null)
{
var compiled = _loader.Load(page);
candidates.ReplaceEndpoint(i, compiled.Endpoint, candidate.Values);
}
}
public IEnumerable <RouteInformation> GetAllRouteInformations()
{
List <RouteInformation> list = new List <RouteInformation>();
var actionDescriptors = this._actionDescriptorCollectionProvider.ActionDescriptors.Items;
foreach (var actionDescriptor in actionDescriptors)
{
RouteInformation info = new RouteInformation();
if (actionDescriptor.RouteValues.ContainsKey("area"))
{
info.AreaName = actionDescriptor.RouteValues["area"];
}
if (actionDescriptor is PageActionDescriptor pageActionDescriptor)
{
var compiledPage = _pageLoader.Load(pageActionDescriptor);
info.Path = pageActionDescriptor.ViewEnginePath;
info.Invocation = pageActionDescriptor.RelativePath;
SetHtmlInfo(info, compiledPage);
if (!list.Exists(x => x.Invocation == info.Invocation))
{
list.Add(info);
}
continue;
}
if (actionDescriptor.AttributeRouteInfo != null)
{
info.Path = $"/{actionDescriptor.AttributeRouteInfo.Template}";
}
// Controller/Action
if (actionDescriptor is ControllerActionDescriptor controllerActionDescriptor)
{
if (info.Path.IsEmpty())
{
info.Path = $"/{controllerActionDescriptor.ControllerName}/{controllerActionDescriptor.ActionName}";
}
SetHtmlInfo(info, controllerActionDescriptor);
info.ControllerName = controllerActionDescriptor.ControllerName;
info.ActionName = controllerActionDescriptor.ActionName;
info.Invocation = $"{controllerActionDescriptor.ControllerName}Controller.{controllerActionDescriptor.ActionName}";
}
info.Invocation += $"({actionDescriptor.DisplayName})";
list.Add(info);
}
return(list);
}
public async Task Invoke(HttpContext context)
{
var relativePath = context.Request.Path.Value.TrimStart(_separator);
if (relativePath == string.Empty)
{
relativePath = _defaultPage;
}
if (relativePath.Contains("."))
{
if (relativePath.EndsWith(Page.Extension))
{
var extensionIndex = relativePath.LastIndexOf(Page.Extension);
relativePath = relativePath.Remove(extensionIndex);
}
else
{
await _next(context);
}
}
var pageContext = _pageContextFactory.Create(context);
var pageType = _pageLoader.Load(relativePath);
if (pageType == null)
{
context.Response.StatusCode = 404;
return;
}
pageContext.PageDescriptor = new PageDescriptor
{
RelativePath = relativePath,
PageType = pageType
};
var page = _pageFactory.CreatePage(pageContext);
await page.ExecuteAsync();
}
/// <summary>
/// 构建并生成Html
/// </summary>
public async Task BuildAsync()
{
var pageActionDescriptors = GetPageActionDescriptors();
var requestUrl = $"{Web.Request.Scheme}://{Web.Request.Host}";
foreach (var actionDescriptor in pageActionDescriptors)
{
if (actionDescriptor.RelativePath.ToLower() == "/Pages/Index.cshtml".ToLower())
{
continue;
}
var compiledPage = _pageLoader.Load(actionDescriptor);
var path = actionDescriptor.ViewEnginePath;// Url访问路径：/Components/DataDisplay/Table
var htmlPath = GetHtmlPathAttribute(compiledPage);
if (htmlPath != null)
{
if (htmlPath.Ignore)
{
continue;
}
}
await Web.Client <string>().Get($"{requestUrl}/view{path}").ResultAsync();
}
}
public void OnProvidersExecuting(ActionInvokerProviderContext context)
{
var actionDescriptor = context.ActionContext.ActionDescriptor as PageActionDescriptor;
if (actionDescriptor != null)
{
var itemCount = actionDescriptor.FilterDescriptors?.Count ?? 0;
var filterItems = new List <FilterItem>(itemCount);
for (var i = 0; i < itemCount; i++)
{
var item = new FilterItem(actionDescriptor.FilterDescriptors[i]);
filterItems.Add(item);
}
var filterProviderContext = new FilterProviderContext(context.ActionContext, filterItems);
for (var i = 0; i < _filterProviders.Length; i++)
{
_filterProviders[i].OnProvidersExecuting(filterProviderContext);
}
for (var i = _filterProviders.Length - 1; i >= 0; i--)
{
_filterProviders[i].OnProvidersExecuted(filterProviderContext);
}
var filters = new IFilterMetadata[filterProviderContext.Results.Count];
for (var i = 0; i < filterProviderContext.Results.Count; i++)
{
filters[i] = filterProviderContext.Results[i].Filter;
}
var compiledType = _loader.Load(actionDescriptor);
var compiledActionDescriptor = new CompiledPageActionDescriptor(actionDescriptor)
{
PageType = compiledType.GetTypeInfo(),
HandlerMethods = new List <HandlerMethodDescriptor>(),
};
foreach (var method in compiledType.GetTypeInfo().GetMethods())
{
if (method.Name.StartsWith("OnGet") ||
method.Name.StartsWith("OnPost"))
{
compiledActionDescriptor.HandlerMethods.Add(new HandlerMethodDescriptor()
{
Method = method,
});
}
}
context.Result = new PageActionInvoker(
_diagnosticSource,
_logger,
_factory,
_selector,
_metadataProvider,
_tempDataFactory,
_viewOptions,
filters,
_valueProviderFactories,
context.ActionContext,
compiledActionDescriptor,
_pagePersistedPropertyProvider);
}
}
private IEnumerable <AreaInfo> GetAreaInfos(IActionDescriptorCollectionProvider actionDescriptorCollectionProvider, IPageLoader pageLoader, LinkGenerator linkGenerator)
{
//根，从area开始
var result = new List <AreaInfo>();
//遍历区域
foreach (var area in actionDescriptorCollectionProvider.ActionDescriptors.Items.GroupBy(item => item.RouteValues["area"]))
{
var areaInfo = new AreaInfo {
Name = area.Key
};
result.Add(areaInfo);
//遍历控制器
foreach (var controllerActions in area.OfType <ControllerActionDescriptor>().GroupBy(c => c.ControllerTypeInfo))
{
//跳过重复控制器，不知道为什么，里面有些重复项目
if (areaInfo.Controllers.Any(c => c.TypeFullName == controllerActions.Key.FullName))
{
continue;
}
var conInfo = new AreaInfo.ControllerInfo
{
Name = controllerActions.First().ControllerName,
TypeFullName = controllerActions.Key.FullName,
Description = (controllerActions.Key.GetCustomAttribute(typeof(DescriptionAttribute)) as DescriptionAttribute)
?.Description,
Area = controllerActions.First().RouteValues["area"],
};
areaInfo.Controllers.Add(conInfo);
//遍历动作
foreach (var action in controllerActions)
{
var act = new AreaInfo.ControllerInfo.ActionInfo
{
Name = action.MethodInfo.Name,
ActionName = action.ActionName,
HandlerIdentification = (action.MethodInfo.GetCustomAttribute(typeof(RequestHandlerIdentificationAttribute)) as RequestHandlerIdentificationAttribute)
?.UniqueKey,
Signature = action.MethodInfo.ToString(),
Description = (action.MethodInfo.GetCustomAttribute(typeof(DescriptionAttribute)) as DescriptionAttribute)
?.Description,
Url = linkGenerator.GetPathByAction(action.ActionName, conInfo.Name, new { area = conInfo.Area }),
HttpMethodLimits = action.ActionConstraints?.OfType <HttpMethodActionConstraint>().FirstOrDefault()?.HttpMethods.ToList(),
MethodInfo = action.MethodInfo,
ActionDescriptor = action
};
conInfo.Actions.Add(act);
}
}
//遍历Razor Page
foreach (var pageActionDescriptor in area.OfType <PageActionDescriptor>())
{
//载入Razor Page，会从程序集加载或编译page文件并缓存
var page = pageLoader.Load(pageActionDescriptor);
//也是剔除重复
if (areaInfo.Pages.Any(p => p.TypeFullName == page.HandlerTypeInfo.FullName))
{
continue;
}
var pageInfo = new AreaInfo.PageInfo
{
Name = page.DisplayName,
Area = page.AreaName,
TypeFullName = page.HandlerTypeInfo.FullName,
Description = (page.HandlerTypeInfo.GetCustomAttribute(typeof(DescriptionAttribute)) as DescriptionAttribute)
?.Description
};
foreach (var handlerMethod in page.HandlerMethods)
{
pageInfo.PageHandlers.Add(new AreaInfo.PageInfo.PageHandlerInfo
{
HttpMethod = handlerMethod.HttpMethod,
Name = handlerMethod.Name,
HandlerIdentification = (handlerMethod.MethodInfo.GetCustomAttribute(typeof(RequestHandlerIdentificationAttribute)) as RequestHandlerIdentificationAttribute)
?.UniqueKey,
Signature = handlerMethod.MethodInfo.ToString(),
Description = (handlerMethod.MethodInfo.GetCustomAttribute(typeof(DescriptionAttribute)) as DescriptionAttribute)
?.Description,
Url = linkGenerator.GetPathByPage(page.DisplayName, handlerMethod.Name, new { area = page.AreaName }),
MethodInfo = handlerMethod.MethodInfo,
ActionDescriptor = page
});
}
areaInfo.Pages.Add(pageInfo);
}
}
return(result);
}
public void OnProvidersExecuting(ActionInvokerProviderContext context)
{
var actionDescriptor = context.ActionContext.ActionDescriptor as PageActionDescriptor;
if (actionDescriptor != null)
{
var itemCount = actionDescriptor.FilterDescriptors?.Count ?? 0;
var filterItems = new List <FilterItem>(itemCount);
for (var i = 0; i < itemCount; i++)
{
var item = new FilterItem(actionDescriptor.FilterDescriptors[i]);
filterItems.Add(item);
}
var filterProviderContext = new FilterProviderContext(context.ActionContext, filterItems);
for (var i = 0; i < _filterProviders.Length; i++)
{
_filterProviders[i].OnProvidersExecuting(filterProviderContext);
}
for (var i = _filterProviders.Length - 1; i >= 0; i--)
{
_filterProviders[i].OnProvidersExecuted(filterProviderContext);
}
var filters = new IFilterMetadata[filterProviderContext.Results.Count];
for (var i = 0; i < filterProviderContext.Results.Count; i++)
{
filters[i] = filterProviderContext.Results[i].Filter;
}
var compiledType = _loader.Load(actionDescriptor).GetTypeInfo();
var modelType = compiledType.GetProperty("Model")?.PropertyType.GetTypeInfo();
var compiledActionDescriptor = new CompiledPageActionDescriptor(actionDescriptor)
{
ModelType = modelType,
PageType = compiledType,
HandlerMethods = new List <HandlerMethodDescriptor>(),
};
if (modelType != null && modelType != compiledType)
{
// If the model and page type are different discover handler methods on the model as well.
PopulateHandlerMethodDescriptors(modelType, compiledActionDescriptor);
}
PopulateHandlerMethodDescriptors(compiledType, compiledActionDescriptor);
context.Result = new PageActionInvoker(
_diagnosticSource,
_logger,
_factory,
_modelFactory,
_selector,
_metadataProvider,
_tempDataFactory,
_viewOptions,
filters,
_valueProviderFactories,
context.ActionContext,
compiledActionDescriptor,
_pagePersistedPropertyProvider);
}
}
