ASP.NET Core MVC通过IViewLocationExpander扩展视图搜索路径的实现
(编辑：jimmy 日期: 2026/1/3 浏览：2)
IViewLocationExpander API
- ExpandViewLocations Razor视图路径，视图引擎会搜索该路径.
- PopulateValues 每次调用都会填充路由
项目目录如下所示
创建区域扩展器，其实我并不需要多区域，我目前只需要达到一个区域中有多个文件夹进行存放我的视图.
所以我通过实现IViewLocationExpander进行扩展添加我自定义视图路径规则即可正如下代码片段
public class MyViewLocationExpander : IViewLocationExpander
{
public IEnumerable<string> ExpandViewLocations(ViewLocationExpanderContext context, IEnumerable<string> viewLocations)
{
if (context.ControllerName != null && context.ControllerName.StartsWith("App"))
{
viewLocations = viewLocations.Concat(
new[] { $"/Areas/sysManage/Views/App/{context.ControllerName}/{context.ViewName}{RazorViewEngine.ViewExtension}"
});
return viewLocations;
}
if (context.AreaName != "sysManage") return viewLocations;
viewLocations = viewLocations.Concat(
new[] { $"/Areas/sysManage/Views/System/{context.ControllerName}/{context.ViewName}{RazorViewEngine.ViewExtension}"
});
return viewLocations;
}
public void PopulateValues(ViewLocationExpanderContext context)
{
}
}
在Startup.ConfigureServices 注册
public void ConfigureServices(IServiceCollection services)
{
services.Configure<RazorViewEngineOptions>(o => {
o.ViewLocationExpanders.Add(new MyViewLocationExpander());
});
services.AddMvc();
}
app.UseEndpoints(endpoints =>
{
endpoints.MapRazorPages();
endpoints.MapAreaControllerRoute(
name: "sysManage", "sysManage",
pattern: "{area:exists}/{controller=Home}/{action=Index}/{id");
});
最终路由指向的还是
/SysManage/Controller/Action