I have the Base URL within the appsettings.json like below
"RM": {
"BaseAddress": "https://rm-dev.abc.org/"
},
With in the Class where I am trying to make a call this endpoint
public class InventorySearchLogic
{
private readonly SMContext _context;
private readonly IConfiguration _iconfiguration;
public InventorySearchLogic(SMContext context, IConfiguration iconfiguration)
{
_context = context;
_iconfiguration = iconfiguration;
}
public InventorySearchLogic(SMContext context)
{
}
public async Task<string> GetRoomID(string roomName)
{
//string rmID = "";
using (var client = new HttpClient())
{
RmRoom retRoom = new RmRoom();
client.BaseAddress = new Uri(_iconfiguration.GetSection("RM").GetSection("BaseAddress").Value);
client.DefaultRequestHeaders.Accept.Clear();
When debugging it throws error like System.NullReferenceException: Message=Object reference not set to an instance of an object. how to access the base URL from appsettings.json
I am not sure how to use the ConfigurationBuilder() as I have different apSettings.json file one for each environment like appsettings.Development.json , appsettings.QA.json, appsettings.PROD.json
Below is my Startup
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.AddAuthentication(OpenIdConnectDefaults.AuthenticationScheme)
.AddMicrosoftIdentityWebApp(Configuration.GetSection("AzureAd"));
services.AddControllersWithViews();
services.AddSession();
services.AddMemoryCache();
services.AddDbContextPool<SurplusMouseContext>(options =>
{
options.UseSqlServer(Configuration.GetConnectionString("SMConnectionStrings"),
sqlServerOptionsAction: sqlOptions =>
{
sqlOptions.EnableRetryOnFailure();
});
});
services.AddHttpContextAccessor();
services.AddControllersWithViews(options =>
{
var policy = new AuthorizationPolicyBuilder()
.RequireAuthenticatedUser()
.Build();
options.Filters.Add(new AuthorizeFilter(policy));
});
services.AddRazorPages()
.AddMicrosoftIdentityUI();
}
// 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.UseSession();
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthentication();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllerRoute(
name: "default",
pattern: "{controller=Customers}/{action=Index}/{id?}");
});
}
}
Program.cs
public class Program
{
public static void Main(string[] args)
{
CreateHostBuilder(args).Build().Run();
}
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseStartup<Startup>();
});
}
You're already injecting an IConfiguration in your service and saving it as _iconfiguration. Assuming that's not the null value, then simply use .GetValue to retrieve a value.
string baseAddress = _iconfiguration.GetSection("RM").GetValue<string>("BaseAddress");
Read more about ASP.Net configuration
Well, it seems that _iconfiguration is also null.
You've indicated in the comments that you're creating an instance of InventorySearchLogic from a controller, such as
// inside controller logic
var searchLogic = new InventorySearchLogic(_context, _iconfiguration);
This is the wrong approach. Instead, you should register this class as a DI service (although you should also add an interface, it's not necessary right now).
In your Startup's ConfigureServices method, add
services.AddTransient<InventorySearchLogic>();
Then instead of manually creating a variable of type InventorySearchLogic, request it though DI
// your controller constructor
private readonly InventorySearchLogic searchLogic;
public MyController(InventorySearchLogic searchLogic)
{
this.searchLogic = searchLogic;
}
This way, InventorySearchLogic's constructor correctly gets the DI services it's looking for. You will have to move the SMContext context. Maybe move that to the method's parameters?
Related
I am trying to put Startup class back to .NET 6 project Web API.
So I just altered Program.cs to:
public static class Program
{
public static void Main(string[] args)
{
BuildWebHost(args).Run();
}
public static IWebHost BuildWebHost(string[] args)
{
return WebHost.CreateDefaultBuilder(args)
.UseStartup<Startup>()
.Build();
}
}
and I extracted all service registrations and stuff into my Startup class:
public class Startup
{
public WebApplication InitializeApp()
{
var builder = WebApplication.CreateBuilder();
IServiceCollection servicesservices = builder.Services;
ConfigureServices(servicesservices, builder);
var app = builder.Build();
Configure(app);
return app;
}
public void ConfigureServices(IServiceCollection services, WebApplicationBuilder builder)
{
ConfigurationManager configuration = builder.Configuration;
services.AddApplicationLayer();
services.AddPersistanceLayer(builder.Configuration);
services.AddControllers();
services.AddEndpointsApiExplorer();
services.AddSwaggerGen(c =>
{
c.SwaggerDoc("v1", new OpenApiInfo { Title = "VehicleReservation", Version = "v1" });
});
}
public void Configure(WebApplication app)
{
// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
app.UseSwagger();
app.UseSwaggerUI();
}
app.UseHttpsRedirection();
app.UseErrorHandlingMiddleware();
app.UseAuthorization();
app.MapControllers();
SeedDatabase(app);
}
private void SeedDatabase(WebApplication app)
{
using (var scope = app.Services.CreateScope())
{
var services = scope.ServiceProvider;
var vehicleReservationContext = services.GetRequiredService<VehicleReservationContext>();
VehicleReservationContextSeed.SeedAsync(vehicleReservationContext);
}
}
}
but I have an error: `The ConfigureServices method must either be parameterless or take only one parameter of type IServiceCollection.'
I see that I have 2 params for my ConfigureServices, but Im not sure, how to make it to have 1 or non parameters?
APPROACH #1:
Is to have _builder globally defined within Startup class
public class Startup
{
private WebApplicationBuilder _builder;
public Startup(WebApplicationBuilder builder)
{
_builder = builder;
}
public WebApplication InitializeApp()
{
var _builder = WebApplication.CreateBuilder();
IServiceCollection servicesservices = _builder.Services;
ConfigureServices(servicesservices);
var app = _builder.Build();
Configure(app);
return app;
}
public void ConfigureServices(IServiceCollection services)
{
ConfigurationManager configuration = _builder.Configuration;
services.AddApplicationLayer();
services.AddPersistanceLayer(_builder.Configuration);
services.AddControllers();
services.AddEndpointsApiExplorer();
services.AddSwaggerGen(c =>
{
c.SwaggerDoc("v1", new OpenApiInfo { Title = "VehicleReservation", Version = "v1" });
});
}
public void Configure(WebApplication app)
{
// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
app.UseSwagger();
app.UseSwaggerUI();
}
app.UseHttpsRedirection();
app.UseErrorHandlingMiddleware();
app.UseAuthorization();
app.MapControllers();
SeedDatabase(app);
}
private void SeedDatabase(WebApplication app)
{
using (var scope = app.Services.CreateScope())
{
var services = scope.ServiceProvider;
var vehicleReservationContext = services.GetRequiredService<VehicleReservationContext>();
VehicleReservationContextSeed.SeedAsync(vehicleReservationContext);
}
}
}
Startup classes support configuration injection via ctor, so since you are you only using Configuration from WebApplicationBuilder just inject it:
public IConfiguration Configuration { get; }
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
// ...
// to clarify configure method
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseSwagger();
app.UseSwaggerUI();
}
// ...
}
And then you can use Configuration property in ConfigureServices.
See the docs on the Startup class.
I'm trying to implement Azure App Configuration to my Application that uses the ASP.NET Boilerplate Framework. I'm following this tutorial but when I try to access my settings everything comes null. When the Startup.cs get executed I can see the values in the constructor but when I try to get them else where I get the null.
Program.cs:
public class Program
{
public static void Main(string[] args)
{
BuildWebHost(args).Run();
}
public static IWebHost BuildWebHost(string[] args)
{
return WebHost.CreateDefaultBuilder(args)
.ConfigureAppConfiguration((config) =>
{
// Retrieve the connection string
IConfiguration settings = config.Build();
string connectionString = settings.GetConnectionString("AppConfig");
// Load configuration from Azure App Configuration
config.AddAzureAppConfiguration(options =>
{
options.Connect(connectionString)
// Load all keys that start with `TestApp:` and have no label
.Select("TestApp:*", LabelFilter.Null)
// Configure to reload configuration if the registered sentinel key is modified
.ConfigureRefresh(refreshOptions => refreshOptions.Register("TestApp:Settings:Sentinel", refreshAll: true));
}).Build();
})
.UseStartup<Startup>()
.Build();
}
}
Startup.cs:
public class Startup
{
private const string _defaultCorsPolicyName = "localhost";
private const string _apiVersion = "v1";
public IConfigurationRoot _appConfiguration;
public IConfiguration Configuration { get; }
public Startup(IWebHostEnvironment env, IConfiguration configuration)
{
_appConfiguration = env.GetAppConfiguration();
Configuration = configuration; //Azure App Configuration
}
public IServiceProvider ConfigureServices(IServiceCollection services)
{
//MVC
services.AddControllersWithViews(
options =>
{
options.Filters.Add(new AbpAutoValidateAntiforgeryTokenAttribute());
}
).AddNewtonsoftJson(options =>
{
options.SerializerSettings.ContractResolver = new AbpMvcContractResolver(IocManager.Instance)
{
NamingStrategy = new CamelCaseNamingStrategy()
};
});
IdentityRegistrar.Register(services);
AuthConfigurer.Configure(services, _appConfiguration);
services.AddSignalR();
// Configure CORS for angular2 UI
services.AddCors(
options => options.AddPolicy(
_defaultCorsPolicyName,
builder => builder
.WithOrigins(
// App:CorsOrigins in appsettings.json can contain more than one address separated by comma.
_appConfiguration["App:CorsOrigins"]
.Split(",", StringSplitOptions.RemoveEmptyEntries)
.Select(o => o.RemovePostFix("/"))
.ToArray()
)
.AllowAnyHeader()
.AllowAnyMethod()
.AllowCredentials()
)
);
options.DocInclusionPredicate((docName, description) => true);
// Define the BearerAuth scheme that's in use
options.AddSecurityDefinition("bearerAuth", new OpenApiSecurityScheme()
{
Description = "JWT Authorization header using the Bearer scheme. Example: \"Authorization: Bearer {token}\"",
Name = "Authorization",
In = ParameterLocation.Header,
Type = SecuritySchemeType.ApiKey
});
});
services.AddAzureAppConfiguration();
// Bind configuration "TestApp:Settings" section to the Settings object
services.AddOptions();
services.Configure<Settings>(Configuration.GetSection("TestApp:Settings"));
// Configure Abp and Dependency Injection
return services.AddAbp<RptWebHostModule>(
// Configure Log4Net logging
options => options.IocManager.IocContainer.AddFacility<LoggingFacility>(
f => f.UseAbpLog4Net().WithConfig("log4net.config")
)
);
}
public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory)
{
app.UseAbp(options => { options.UseAbpRequestLocalization = false; }); // Initializes ABP framework.
app.UseCors(_defaultCorsPolicyName); // Enable CORS!
app.UseStaticFiles();
app.UseRouting();
app.UseAuthentication();
app.UseAbpRequestLocalization();
app.UseEndpoints(endpoints =>
{
endpoints.MapHub<AbpCommonHub>("/signalr");
endpoints.MapControllerRoute("default", "{controller=Home}/{action=Index}/{id?}");
endpoints.MapControllerRoute("defaultWithArea", "{area}/{controller=Home}/{action=Index}/{id?}");
});
options.IndexStream = () => Assembly.GetExecutingAssembly()
options.DisplayRequestDuration(); // Controls the display of the request duration (in milliseconds) for "Try it out" requests.
});
// Use Azure App Configuration middleware for dynamic configuration refresh.
app.UseAzureAppConfiguration();
}
}
Custom Controller where I get the null values:
[Route("api/[controller]/[action]")]
public class AzureAppConfigTest : AbpControllerBase
{
public Settings _settings { get; }
public AzureAppConfigTest(IOptionsSnapshot<Settings> options
)
{
_settings = options.Value;
}
[HttpPost]
public string Test()
{
return _settings.Message; // The Problem is here
}
}
I need to get the values else where in the Application, I tried changing IOptionsSnapshot for IOptions but I can't make it work, Iv'e been stuck with this about two week but since I'm new in the Microsoft world I can't see clearly where the problem is, Thanks in Advance
Update:
I am able to use the configuration at the Presentation Layer, but If I try to use it on the Application layer I don't get the values.
English is not my primary language so I apologize if I make some spelling mistakes here.
I am trying do build a simple asp.net 5.0 application from zero.
Now i'm struggling with de registering process of my appdbcontext class. I'm using a factory that is implementating IDesignTimeDbContextFactory like that:
public class ApplicationDbContextFactory : IDesignTimeDbContextFactory<AppDbContext>
{
public AppDbContext CreateDbContext(string[] args)
{
var configuration = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddJsonFile("appsettings.json", true)
.AddEnvironmentVariables()
.Build();
var builder = new DbContextOptionsBuilder<AppDbContext>();
//var connectionString = configuration
// .GetConnectionString("DefaultConnection");
var connectionString = "server=127.0.0.1; port=3306; database=dbRoomManagement; uid=root; pwd=room123-pw";
//builder.UseMySql(connectionString, ServerVersion.AutoDetect(connectionString),
// x => x.MigrationsAssembly(typeof(ApplicationDbContextFactory).Assembly.FullName));
builder.UseMySql(connectionString, ServerVersion.AutoDetect(connectionString));
return new AppDbContext(builder.Options);
}
}
When i don't register anything on startp.cs like that:
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.AddControllers();
services.AddServices();
services.AddRepositories();
services.AddMappers();
services.AddSwaggerGen(c =>
{
c.SwaggerDoc("v1", new OpenApiInfo { Title = "RoomManagement", Version = "v1" });
});
}
// 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();
app.UseSwagger();
app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "RoomManagement v1"));
}
app.UseHttpsRedirection();
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
});
}
}
I get a error saying that was not possible to resolve my AppDbContext:
If i put the line services.AddDbContext(); to register the AppDbContext i get the message that was mot possible to find the database configurations. I imagine if i use this line the program dont use the factory so they dont find the configurations:
I'm really cant find something that put me in the right direction here.
Does somebody have something that can help me?
Repository: https://github.com/AndreLuis117/RoomManagement
I tried to inject my own service in my api controller, but it throws an InvalidOperationException. It is unable to resolve the service. (.NET 5)
What I am doing wrong?
public class MyController : ControllerBase
{
private readonly MyService _myService;
public ContractsController(MyService service)
{
myService = service;
}
[HttpGet("{id}")]
public Item GetItemById(string id)
{
return _myService.getContract(id);
}
}
This is my Startup file:
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.AddControllers();
services.AddSwaggerGen(c =>
{
c.CustomOperationIds(selector => $"{selector.HttpMethod.ToLower().Pascalize()}{selector.ActionDescriptor.RouteValues["controller"]}");
c.SwaggerDoc("v1", new OpenApiInfo { Title = "My.Portal.Server", Version = "v1" });
});
services.AddCors(options =>
{
options.AddDefaultPolicy(builder =>
{
builder.SetIsOriginAllowed(origin => new Uri(origin).IsLoopback)
.WithOrigins(Configuration.GetSection("AllowedOrigins").Get<string[]>())
.AllowAnyHeader()
.AllowAnyMethod();
});
});
}
// 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();
app.UseSwagger();
app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "My.Portal.Server v1"));
}
app.UseHttpsRedirection();
app.UseRouting();
app.UseAuthorization();
app.UseCors();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
});
}
}
If i create a new instance in the constructor, then it is working.
thank you in advance!
Example, as per request in comment:
public void ConfigureServices(IServiceCollection services)
{
services.AddScoped<IInfoStorageService>(c => new InfoStorageService(Configuration["ImageInfoConnectionString"]));
This is telling the application to pass an instance of InfoStorageService in where IInfoStorageService is injected. It is instantiated with a connection string that it reads from configuration.
AddScoped means that the injected service will be the same across the request. You can also use AddTransient() which means it will not match any other uses of the service, or you can use AddSingleton(), which means it will use the same instance through the whole lifetime of the application.
I have some trouble i try to resolve problem i use Autofac with .net core 3.0-6preview.
I add new AutofacServiceProviderFactory() to CreateHostBuilder which is require in this .net core version framework.
The code was working correctly in version 2.1 and lower but now application was crashed
The exception:
System.NotSupportedException: 'ConfigureServices returning an System.IServiceProvider isn't supported.'
The Program class code:
public class Program
{
public static void Main(string[] args) => CreateHostBuilder(args).Build().Run();
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.UseServiceProviderFactory(new AutofacServiceProviderFactory())
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseStartup<Startup>();
});
}
And the Startup class:
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
public IContainer ApplicationContainer { get; private set; }
// This method gets called by the runtime. Use this method to add services to the container.
public IServiceProvider ConfigureServices(IServiceCollection services)
{
var builder = new ContainerBuilder();
builder.Populate(services);
builder.RegisterModule(new ContainerModule(Configuration));
ApplicationContainer = builder.Build();
return new AutofacServiceProvider(ApplicationContainer);
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env, IApplicationLifetime appLifetime)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
// 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.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
});
var jwtSettings = app.ApplicationServices.GetService<JwtSettings>();
var generalSettings = app.ApplicationServices.GetService<GeneralSettings>();
if (generalSettings.SeedData)
{
var dataInitializer = app.ApplicationServices.GetService<IDataInitializer>();
dataInitializer.SeedAsync();
}
// app.UseMvc();
appLifetime.ApplicationStopped.Register(() => ApplicationContainer.Dispose());
}
}
Startup syntax has changed for configuring Autofac.
Instead, in Startup do the following
public void ConfigureServices(IServiceCollection services) {
//... normal registration here
// Add services to the collection. Don't build or return
// any IServiceProvider or the ConfigureContainer method
// won't get called.
}
public void ConfigureContainer(ContainerBuilder builder) {
//configure auto fac here
builder.RegisterModule(new ContainerModule(Configuration));
}
Reference Autofac documentation for ASP.NET Core 3.0+
you must change program.c
public static void Main(string[] args)
{
CreateWebHostBuilder(args).Build().Run();
}
public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
WebHost.CreateDefaultBuilder(args)
.ConfigureLogging(options => options.ClearProviders())
.UseStartup<Startup>();