我不确定从哪里开始，但是将我的应用程序转换为.net core 2.1时出现此错误
MissingMethodException: Method not found: 'System.String Microsoft.Net.Http.Headers.StringWithQualityHeaderValue.get_Value()'.
Microsoft.AspNetCore.ResponseCompression.ResponseCompressionProvider.GetCompressionProvider(HttpContext context)
这是我的完整堆栈跟踪
System.MissingMethodException: Method not found: 'System.String Microsoft.Net.Http.Headers.StringWithQualityHeaderValue.get_Value()'.
at Microsoft.AspNetCore.ResponseCompression.ResponseCompressionProvider.GetCompressionProvider(HttpContext context)
at Microsoft.AspNetCore.ResponseCompression.BodyWrapperStream.OnWrite()
at Microsoft.AspNetCore.ResponseCompression.BodyWrapperStream.WriteAsync(Byte[] buffer, Int32 offset, Int32 count, CancellationToken cancellationToken)
at Microsoft.AspNetCore.Http.Extensions.StreamCopyOperation.CopyToAsync(Stream source, Stream destination, Nullable`1 count, Int32 bufferSize, CancellationToken cancel)
at Microsoft.AspNetCore.Mvc.Infrastructure.FileResultExecutorBase.WriteFileAsync(HttpContext context, Stream fileStream, RangeItemHeaderValue range, Int64 rangeLength)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeResultAsync(IActionResult result)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResultFilterAsync[TFilter,TFilterAsync]()
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResultExecutedContext context)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.ResultNext[TFilter,TFilterAsync](State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeResultFilters()
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResourceFilter()
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResourceExecutedContext context)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeFilterPipelineAsync()
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeAsync()
at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke(HttpContext httpContext)
at Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIIndexMiddleware.Invoke(HttpContext httpContext)
at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext)
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.Invoke(HttpContext context)
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.Invoke(HttpContext context)
at.Startup.<>c.<<Configure>b__12_0>d.MoveNext() in C:Startup.cs:line 136
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)
public class Startup
{
private AuthorizationSettings _authorizationSettings = new AuthorizationSettings();
public Startup(IHostingEnvironment env)
{
var builder = new ConfigurationBuilder()
.SetBasePath(env.ContentRootPath)
.AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
.AddJsonCryptoFile("connectionsettings.json", optional: false, reloadOnChange: true)
.AddEnvironmentVariables();
Configuration = builder.Build();
Configuration.GetSection("AuthorizationSettings").Bind(_authorizationSettings);
env.ConfigureNLog($"nlog.config");
}
public IConfigurationRoot Configuration { get; }
public IHostingEnvironment HostingEnvironment { get; }
public Microsoft.AspNetCore.Http.Features.IFeatureCollection Features { get; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
//JWT:
services.AddTokenSecurity();
//services.AddResponseCaching();
// SERVICES
services.Configure<ServiceSettings>(Configuration.GetSection("ServiceSettings"));
var userName = Configuration.GetSection("ServiceAuthSetting:Username").Value;
var password = Configuration.GetSection("ServiceAuthSetting:Password").Value;
var useAuth = Configuration.GetSection("ServiceAuthSetting:Enable").Value;
// Oracle (one connection per request via DI):
services.Configure<DatabaseSettings>(Configuration.GetSection("DatabaseSettings"));
services.AddTransient<DataContext>(
r => new DataContext(r.GetRequiredService<IOptions<DatabaseSettings>>(),
r.GetService<ILoggerFactory>(), r.GetRequiredService<IHttpContextAccessor>()));
// We need access to HttpContext to profile, which is off by default.
// See: https://github.com/aspnet/Hosting/issues/793
services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
// Secure-by-default:
services.Configure<AuthorizationOptions>(auth =>
{
auth.AddPolicy("Bearer", new AuthorizationPolicyBuilder()
.AddAuthenticationSchemes("Bearer")
.RequireAuthenticatedUser().Build());
});
//Add compression for static files and API response
var gzipSettings = new GzipCompressionSettings();
Configuration.GetSection("GzipCompressionSettings").Bind(gzipSettings);
services.AddGzipCompression(gzipSettings);
// Swagger:
var settings = new SwaggerSettings();
Configuration.GetSection("SwaggerSettings").Bind(settings);
services.AddSwaggerFeature(HostingEnvironment, settings);
services.AddMvc();
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
//put as first middleware to make sure we capture all different files
app.UseGzipCompression();
loggerFactory.AddNLog();
var serviceSettings = new ServiceSettings();
Configuration.GetSection("ServiceSettings").Bind(serviceSettings);
//add NLog.Web
app.AddNLogWeb();
app.UseLoggingMiddleware(LoggingType.All);
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
app.UseBrowserLink();
}
else
{
app.UseExceptionHandler("/Home/Error");
}
// app.UseCorsMiddleware(serviceSettings);
//app.UseResponseCaching();
app.Use(async (context, next) =>
{
var headers = context.Response.GetTypedHeaders();
headers.CacheControl = new CacheControlHeaderValue()
{
MaxAge = TimeSpan.FromSeconds(60),
NoStore = true,
NoCache = true,
MustRevalidate = true,
};
headers.Expires = DateTimeOffset.UtcNow;
context.Response.Headers[HeaderNames.Vary] = new string[] { "Accept-Encoding" };
// Do work that doesn't write to the Response.
await next.Invoke();
// Do logging or other work that doesn't write to the Response.
});
app.UseStaticFiles(new StaticFileOptions()
{
OnPrepareResponse = (context) =>
{
var headers = context.Context.Response.GetTypedHeaders();
headers.CacheControl = new CacheControlHeaderValue()
{
MaxAge = TimeSpan.FromSeconds(60),
NoStore = false,
NoCache = true,
MustRevalidate = true,
};
headers.Expires = DateTimeOffset.UtcNow;
}
});
app.UseStaticFiles();
var secret = Convert.ToBase64String(Encoding.UTF8.GetBytes(_authorizationSettings.Secret));
app.UseJwtBearerAuthentication(new JwtBearerOptions
{
AutomaticAuthenticate = true,
TokenValidationParameters = new TokenValidationParameters
{
ValidateIssuerSigningKey = true,
ValidAudience = _authorizationSettings.Audience,
ValidIssuer = _authorizationSettings.Issuer,
IssuerSigningKey = new SymmetricSecurityKey(WebEncoders.Base64UrlDecode(secret)),
ValidateIssuer = true,
ValidateAudience = true,
ValidateLifetime = true
}
});
app.UseSwaggerFeature();
app.UseMvc(routes =>
{
routes.MapRoute(
name: "default",
template: "{controller=Home}/{action=Index}/{id?}");
});
}
}
答案 0 :(得分：1)
这是什么问题
services.AddSwaggerGen(options =>
{
options.AddSecurityRequirement(security);
options.IncludeXmlComments(GetXmlCommentsPath());
options.DescribeAllEnumsAsStrings();
options.EnableAnnotations();
});
options.EnableAnnotations（）;是此错误的一部分，无法修复
https://github.com/micro-elements/MicroElements.Swashbuckle.FluentValidation/issues/20