ASP.NET 核心怪异 URL 解析。单个查询字符串参数
ASP.NET Core weird URL parsing. Single query string parameter
我想将一个字符串参数传递给一个动作。 A 在 HomeController
中创建了一个具有以下签名的方法:
[HttpGet]
public IActionResult TestView([FromQuery] string test)
{
return View(test);
}
这是我的配置class:
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.AddControllersWithViews();
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseExceptionHandler("/Home/Error");
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
});
}
}
当我访问 https://localhost:5001/Home/TestView 时它工作正常
当我添加查询字符串 ?test=myvalue 时,它找不到视图。它尝试使用奇怪的路径定位视图。
InvalidOperationException: The view 'myvalue' was not found. The following locations were searched:
/Views/Home/myvalue.cshtml
/Views/Shared/myvalue.cshtml
这是一个错误吗?
出现该行为是因为您将值“myvalue”作为 returned ViewResult 的第一个参数传递,即视图名称参数:
如果您将 return 语句更改为:
return View();
那么您将不会传递视图名称参数,然后它将搜索名为 TestView 的视图。
我想将一个字符串参数传递给一个动作。 A 在 HomeController
中创建了一个具有以下签名的方法:
[HttpGet]
public IActionResult TestView([FromQuery] string test)
{
return View(test);
}
这是我的配置class:
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.AddControllersWithViews();
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseExceptionHandler("/Home/Error");
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
});
}
}
当我访问 https://localhost:5001/Home/TestView 时它工作正常 当我添加查询字符串 ?test=myvalue 时,它找不到视图。它尝试使用奇怪的路径定位视图。
InvalidOperationException: The view 'myvalue' was not found. The following locations were searched:
/Views/Home/myvalue.cshtml
/Views/Shared/myvalue.cshtml
这是一个错误吗?
出现该行为是因为您将值“myvalue”作为 returned ViewResult 的第一个参数传递,即视图名称参数:
如果您将 return 语句更改为:
return View();
那么您将不会传递视图名称参数,然后它将搜索名为 TestView 的视图。