/// <summary>
/// 渲染视图为字符串
/// </summary>
/// <param name="info">路由信息</param>
/// <returns></returns>
public async Task <string> RenderToStringAsync(RouteInformation info)
{
var razorViewEngine = Web.GetService <IRazorViewEngine>();
var tempDataProvider = Web.GetService <ITempDataProvider>();
var httpContext = Web.HttpContext;
//var serviceProvider = Web.HttpContext.RequestServices;
//var httpContext = new DefaultHttpContext { RequestServices = serviceProvider };
var actionContext = new ActionContext(httpContext, GetRouteData(info), new ActionDescriptor());
var viewResult = GetView(razorViewEngine, actionContext, info);
if (!viewResult.Success)
{
throw new InvalidOperationException($"找不到视图模板 {info.ActionName}");
}
using (var stringWriter = new StringWriter())
{
var viewDictionary = new ViewDataDictionary(new EmptyModelMetadataProvider(), new ModelStateDictionary());
var viewContext = new ViewContext(actionContext, viewResult.View, viewDictionary, new TempDataDictionary(actionContext.HttpContext, tempDataProvider), stringWriter, new HtmlHelperOptions());
await viewResult.View.RenderAsync(viewContext);
return(stringWriter.ToString());
}
}
/// <summary>
/// 将视图写入文件
/// </summary>
/// <param name="info">路由信息</param>
/// <returns></returns>
public async Task WriteViewToFileAsync(RouteInformation info)
{
try
{
var html = await RenderToStringAsync(info);
if (string.IsNullOrWhiteSpace(html))
{
return;
}
var path = Nigel.Helpers.Common.GetWebRootPath(string.IsNullOrWhiteSpace(info.FilePath) ? GetPath(info) : info.FilePath);
var directory = System.IO.Path.GetDirectoryName(path);
if (string.IsNullOrWhiteSpace(directory))
{
return;
}
if (Directory.Exists(directory) == false)
{
Directory.CreateDirectory(directory);
}
File.WriteAllText(path, html);
}
catch (Exception ex)
{
_logger.LogError(ex, "生成html静态文件失败");
}
}
/// <summary>
/// 获取路径
/// </summary>
/// <param name="info">路由信息</param>
/// <returns></returns>
protected virtual string GetPath(RouteInformation info)
{
var area = info.AreaName.SafeString();
var controller = info.ControllerName.SafeString();
var action = info.ActionName.SafeString();
var path = info.TemplatePath.Replace("{area}", area).Replace("{controller}", controller).Replace("{action}", action);
return(path.ToLower());
}
/// <summary>
/// 获取所有路由信息
/// </summary>
/// <returns></returns>
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"];
}
// Razor页面路径以及调用
if (actionDescriptor is PageActionDescriptor pageActionDescriptor)
{
info.Path = pageActionDescriptor.ViewEnginePath;
info.Invocation = pageActionDescriptor.RelativePath;
}
// 路由属性路径
if (actionDescriptor.AttributeRouteInfo != null)
{
info.Path = $"/{actionDescriptor.AttributeRouteInfo.Template}";
}
// Controller/Action 的路径以及调用
if (actionDescriptor is ControllerActionDescriptor controllerActionDescriptor)
{
if (info.Path.IsEmpty())
{
info.Path = $"/{controllerActionDescriptor.ControllerName}/{controllerActionDescriptor.ActionName}";
}
var routeInfo = SetHtmlInfo(info, controllerActionDescriptor);
if (!routeInfo)
{
continue;
}
info.ControllerName = controllerActionDescriptor.ControllerName;
info.ActionName = controllerActionDescriptor.ActionName;
info.Invocation = $"{controllerActionDescriptor.ControllerName}Controller.{controllerActionDescriptor.ActionName}";
}
info.Invocation += $"({actionDescriptor.DisplayName})";
list.Add(info);
}
return(list);
}
/// <summary>
/// 设置Html信息
/// </summary>
/// <param name="routeInformation">路由信息</param>
/// <param name="controllerActionDescriptor">控制器</param>
private bool SetHtmlInfo(RouteInformation routeInformation,
ControllerActionDescriptor controllerActionDescriptor)
{
var htmlAttribute = controllerActionDescriptor.ControllerTypeInfo.GetCustomAttribute <RazorHtmlAttribute>() ??
controllerActionDescriptor.MethodInfo.GetCustomAttribute <RazorHtmlAttribute>();
if (htmlAttribute == null)
{
return(false);
}
routeInformation.FilePath = htmlAttribute.Path;
routeInformation.TemplatePath = htmlAttribute.Template;
routeInformation.IsPartialView = htmlAttribute.IsPartialView;
routeInformation.ViewName = htmlAttribute.ViewName;
return(true);
}
/// <summary>
/// 获取路由数据
/// </summary>
/// <param name="info">路由信息</param>
/// <returns></returns>
protected virtual RouteData GetRouteData(RouteInformation info)
{
var routeData = new RouteData();
if (!info.AreaName.IsEmpty())
{
routeData.Values.Add("area", info.AreaName);
}
if (!info.ControllerName.IsEmpty())
{
routeData.Values.Add("controller", info.ControllerName);
}
if (!info.ActionName.IsEmpty())
{
routeData.Values.Add("action", info.ActionName);
}
return(routeData);
}
/// <summary>
/// 获取Razor视图
/// </summary>
/// <param name="razorViewEngine">Razor视图引擎</param>
/// <param name="actionContext">操作上下文</param>
/// <param name="info">路由信息</param>
/// <returns></returns>
protected virtual ViewEngineResult GetView(IRazorViewEngine razorViewEngine, ActionContext actionContext, RouteInformation info)
{
return(razorViewEngine.FindView(actionContext, info.ViewName.IsEmpty() ? info.ActionName : info.ViewName,
!info.IsPartialView));
}
