问题
I created new ASP.Net core project with WebAPI. Using the below link.
jwt-authentication-with-aspnet-core-2-web-api-angular-5-net-core-identity-and-facebook-login
I have to use add-migration update-database manually.
Here I add one thing more that I don't know how to debug app in VS Code. After created my project in VS Code I open my project in Visual Studio 2017.
When I about to run the update command Update-Database in Package Manager Console. I encounter below error also in my understanding the above command is for create the database and add migrations tables in it. (Correct me If I'm wrong).
fail: Microsoft.EntityFrameworkCore.Database.Command[20102]
Failed executing DbCommand(3ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
CREATE TABLE[AspNetRoles] (
[Id] nvarchar(450) NOT NULL,
[ConcurrencyStamp] nvarchar(max) NULL,
[Name] nvarchar(256) NULL,
[NormalizedName] nvarchar(256) NULL,
CONSTRAINT[PK_AspNetRoles] PRIMARY KEY([Id])
);
System.Data.SqlClient.SqlException(0x80131904): There is already an object named 'AspNetRoles' in the database.
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action 1 wrapCloseInAction)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async, Int32 timeout, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource1 completion, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite, String methodName)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
at Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommand.Execute(IRelationalConnection connection, DbCommandMethod executeMethod, IReadOnlyDictionary2 parameterValues)
ClientConnectionId:56b94f04-73ff-4391-87fc-36a6c256c650
Error Number:2714,State:6,Class:16
System.Data.SqlClient.SqlException(0x80131904): There is already an object named 'AspNetRoles' in the database.
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async, Int32 timeout, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource1 completion, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite, String methodName)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
at Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommand.Execute(IRelationalConnection connection, DbCommandMethod executeMethod, IReadOnlyDictionary2 parameterValues)
at Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommand.ExecuteNonQuery(IRelationalConnection connection, IReadOnlyDictionary2 parameterValues)
at Microsoft.EntityFrameworkCore.Migrations.MigrationCommand.ExecuteNonQuery(IRelationalConnection connection, IReadOnlyDictionary2 parameterValues)
at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationCommandExecutor.ExecuteNonQuery(IEnumerable1 migrationCommands, IRelationalConnection connection)
at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.Migrate(String targetMigration)
at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.UpdateDatabase(String targetMigration, String contextType)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabase.<>c__DisplayClass0_1.<.ctor>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
ClientConnectionId:56b94f04-73ff-4391-87fc-36a6c256c650
Error Number:2714, State:6, Class:16
There is already an object named 'AspNetRoles' in the database.`
Also I share some of my code here and upload my app on github
program.cs
namespace server
{
public class Program
{
public static void Main(string[] args)
{
BuildWebHost(args).Run();
}
public static IWebHost BuildWebHost(string[] args) =>
WebHost.CreateDefaultBuilder(args)
.UseStartup<Startup>()
.Build();
}
}
Startup.cs
public class Startup
{
private const string SecretKey = "iNivDmHLpUA223sqsfhqGbMRdRj1PVkH"; // todo: get this from somewhere secure
private readonly SymmetricSecurityKey _signingKey = new SymmetricSecurityKey(Encoding.ASCII.GetBytes(SecretKey));
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)
{
// Add framework services.
services.AddDbContext<ApplicationDbContext>(options =>
options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection"),
b => b.MigrationsAssembly("server")));
services.AddSingleton<IJwtFactory, JwtFactory>();
// Register the ConfigurationBuilder instance of FacebookAuthSettings
services.Configure<FacebookAuthSettings>(Configuration.GetSection(nameof(FacebookAuthSettings)));
services.TryAddTransient<IHttpContextAccessor, HttpContextAccessor>();
// jwt wire up
// Get options from app settings
var jwtAppSettingOptions = Configuration.GetSection(nameof(JwtIssuerOptions));
// Configure JwtIssuerOptions
services.Configure<JwtIssuerOptions>(options =>
{
options.Issuer = jwtAppSettingOptions[nameof(JwtIssuerOptions.Issuer)];
options.Audience = jwtAppSettingOptions[nameof(JwtIssuerOptions.Audience)];
options.SigningCredentials = new SigningCredentials(_signingKey, SecurityAlgorithms.HmacSha256);
});
var tokenValidationParameters = new TokenValidationParameters
{
ValidateIssuer = true,
ValidIssuer = jwtAppSettingOptions[nameof(JwtIssuerOptions.Issuer)],
ValidateAudience = true,
ValidAudience = jwtAppSettingOptions[nameof(JwtIssuerOptions.Audience)],
ValidateIssuerSigningKey = true,
IssuerSigningKey = _signingKey,
RequireExpirationTime = false,
ValidateLifetime = true,
ClockSkew = TimeSpan.Zero
};
services.AddAuthentication(options =>
{
options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
}).AddJwtBearer(configureOptions =>
{
configureOptions.ClaimsIssuer = jwtAppSettingOptions[nameof(JwtIssuerOptions.Issuer)];
configureOptions.TokenValidationParameters = tokenValidationParameters;
configureOptions.SaveToken = true;
});
// api user claim policy
services.AddAuthorization(options =>
{
options.AddPolicy("ApiUser", policy => policy.RequireClaim(Constants.Strings.JwtClaimIdentifiers.Rol, Constants.Strings.JwtClaims.ApiAccess));
});
// add identity
var builder = services.AddIdentityCore<EmployeeProfile>(o =>
{
// configure identity options
o.Password.RequireDigit = false;
o.Password.RequireLowercase = false;
o.Password.RequireUppercase = false;
o.Password.RequireNonAlphanumeric = false;
o.Password.RequiredLength = 6;
});
builder = new IdentityBuilder(builder.UserType, typeof(IdentityRole), builder.Services);
builder.AddEntityFrameworkStores<ApplicationDbContext>().AddDefaultTokenProviders();
services.AddAutoMapper();
services.AddMvc().AddFluentValidation(fv => fv.RegisterValidatorsFromAssemblyContaining<Startup>());
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseExceptionHandler(
builder =>
{
builder.Run(
async context =>
{
context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;
context.Response.Headers.Add("Access-Control-Allow-Origin", "*");
var error = context.Features.Get<IExceptionHandlerFeature>();
if (error != null)
{
context.Response.AddApplicationError(error.Error.Message);
await context.Response.WriteAsync(error.Error.Message).ConfigureAwait(false);
}
});
});
app.UseAuthentication();
app.UseDefaultFiles();
app.UseStaticFiles();
app.UseMvc();
}
}
ApplicationDbContext.cs
public class ApplicationDbContext : IdentityDbContext<EmployeeProfile>
{
public ApplicationDbContext(DbContextOptions options)
: base(options)
{
}
public DbSet<EmployeeProfile> EmployeeProfiles { get; set; }
}
My Question is how I create my database using migration update command and what's going wrong in my code.
回答1:
I've found the answer of my question.
I just need to change my DefaultConnection in both of below files:
appsettings.json and appsettings.Development.json
Before
"ConnectionStrings": {
"DefaultConnection": "Server=(LocalDb)\\MSSQLLocalDB;Database=webapi;Trusted_Connection=True;MultipleActiveResultSets=true"
}
After
"ConnectionStrings": {
"DefaultConnection": "Server=.;Database=WebApiEfCore;Trusted_Connection=True;"
}
Then run the below queries.
dotnet ef migrations add initial
dotnet ef database update
and how its works. Here is an proved snapshot.
回答2:
By removing MultipleActiveResultSets=true EntityFrameworkCore will not be able to retrieve multiple sets of data at the same time. You might want to add that back in.
来源：https://stackoverflow.com/questions/48362092/not-creating-database-using-migration-command-update-database-in-asp-net-core-2