我正在嘗試進行 API 調用；我啟動 Visual Studio 并在郵遞員中輸入：http://localhost:51266/api/country我在該方法上設置了斷點，但沒有任何反應。我得到了 404 未找到。這是控制器：[Route("api/[controller]")][ApiController]public class CountryController : Controller{ private ICountryRepository countryRepository; public CountryController(ICountryRepository repository) { this.countryRepository = repository; } [HttpGet] public IActionResult GetCountries() { var countries = countryRepository.GetCountries().ToList(); return Ok(countries); }}我在這里做錯了什么？我在 Startup 中有這個：public void ConfigureServices(IServiceCollection services){ services.AddMvc(); var connectionString = Configuration["connectionStrings:bookDbConnectionString"]; services.AddDbContext<BookDbContext>(c => c.UseSqlServer(connectionString)); services.AddScoped<ICountryRepository, CountryRepository>();}我現在有這樣的：[ApiController]public class CountryController : Controller{ private ICountryRepository countryRepository; public CountryController(ICountryRepository repository) { this.countryRepository = repository; } [HttpGet] [Route("api/[controller]")] public IActionResult GetCountries() { var countries = countryRepository.GetCountries().ToList(); return Ok(countries); }}和我的啟動課程：public class Startup{ public static IConfiguration Configuration { get; set; } public Startup(IConfiguration configuration) { Configuration = configuration; }我收到這個警告：警告 MVC1005使用“UseMvc”使用端點路由時不支持配置 MVC。要繼續使用“UseMvc”，請設置“MvcOptions.EnableEndpointRouting = false”在“配置服務”內。 WebApplication2 D:\Mijn Documents\VisualStudio_2019\WebApplication2\WebApplication2\Startup.cs
3 回答
湖上湖
TA貢獻2003條經驗 獲得超2個贊
解決方案是這樣的：
public void ConfigureServices(IServiceCollection services) {
services.AddMvc();
services.AddControllers(); //added this
var connectionString = Configuration["connectionStrings:bookDbConnectionString"];
services.AddDbContext<BookDbContext>(c => c.UseSqlServer(connectionString));
services.AddScoped<ICountryRepository, CountryRepository>();
}
public void Configure(IApplicationBuilder app, IWebHostEnvironment env, BookDbContext context) {
if (env.IsDevelopment()) {
app.UseDeveloperExceptionPage();
}
app.UseRouting(); //uncommented
app.UseAuthorization(); //added this
app.UseEndpoints(endpoints => { //added this
endpoints.MapControllers();
});
//removed the app.UseMvc(); line
}
繁花如伊
TA貢獻2012條經驗 獲得超12個贊
結合不同的方法來實現這一目標
[Route("api/country")]
[ApiController]
public class CountryController : Controller
{
private ICountryRepository countryRepository;
public CountryController(ICountryRepository repository)
{
this.countryRepository = repository;
}
[HttpGet]
public IActionResult GetCountries()
{
var countries = countryRepository.GetCountries().ToList();
return Ok(countries);
}
}
或者
[Route("api/[controller]")]
[ApiController]
public class CountryController : Controller
{
private ICountryRepository countryRepository;
public CountryController(ICountryRepository repository)
{
this.countryRepository = repository;
}
[HttpGet("")]
public IActionResult GetCountries()
{
var countries = countryRepository.GetCountries().ToList();
return Ok(countries);
}
}
我最喜歡這個，我認為它是最直觀的
[Route("api")]
[ApiController]
public class CountryController : Controller
{
private ICountryRepository countryRepository;
public CountryController(ICountryRepository repository)
{
this.countryRepository = repository;
}
[HttpGet("country")]
public IActionResult GetCountries()
{
var countries = countryRepository.GetCountries().ToList();
return Ok(countries);
}
}
如果這些都不起作用，那是因為您沒有在 中的 方法中調用 app.UseMVcConfigureStartup.cs
小唯快跑啊
TA貢獻1863條經驗 獲得超2個贊
問題是路線，必須繼續行動
[HttpGet]
[Route("api/[controller]")]
public IActionResult GetCountries()
或者，您可以將路由保留在控制器上，然后將一個空路由添加到操作中：
[Route("")]
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