System.Web.Http.ApiController.get_Request()中的MIssing方法

Question

我有一个控制器.

    public sealed class AccountsController : BaseApiController
    {
        private readonly IDatabaseAdapter _databaseAdapter;
        public AccountsController(IDatabaseAdapter databaseAdapter)
        {
            _databaseAdapter = databaseAdapter;
        }

        [AllowAnonymous]
        [Route("create")]
        public async Task<IHttpActionResult> CreateUser(CreateUserBindingModel createUserModel)
        {
            if (!ModelState.IsValid)
                return BadRequest(ModelState);
            if (! await _databaseAdapter.DoesAgentExist(createUserModel.UserName))
                return BadRequest();
            if (await _databaseAdapter.DoesAgentHaveAccount(createUserModel.UserName))
                return BadRequest();

            // Create account.
            var password = PasswordHelper.GeneratePassword(32);
            createUserModel.Password = password;
            createUserModel.ConfirmPassword = password;
            var user = new ApplicationUser
            {
                UserName = createUserModel.UserName,
            };
            var addUserResult = await AppUserManager.CreateAsync(user, createUserModel.Password);
            if (!addUserResult.Succeeded)
                return GetErrorResult(addUserResult);
            var locationHeader = new Uri(Url.Link("GetUserById", new { id = user.Id }));
            return Created(locationHeader, ModelFactory.Create(user));
        }
    }

当我将以下提琴手发送到create方法时.

http:// localhost:59430/api/accounts/create User-Agent:Fiddler

Content-Type:application/json接受:application/json主机:localhost:59430内容长度:106

{"UserName":"a.xxxxx","密码":"xxxxxx","ConfirmPassword":"xxxxxx",}

它归结为以下行:

var addUserResult = await AppUserManager.CreateAsync(user, createUserModel.Password);

然后发生以下异常

{"message":"发生错误.","exceptionMessage":"找不到方法:'System.Net.Http.HttpRequestMessage System.Web.Http.ApiController.get_Request()'.","exceptionType":" System.MissingMethodException","stackTrace":"在WebAuth.Controllers.BaseApiController.get_AppUserManager()\ r \n,位于C:\ Users\stuarts\Documents\Visual Studio 2017中的WebAuth.Controllers.AccountsController.d__3.MoveNext() Projects\WebAuth\WebAuth\Controllers\AccountsController.cs:第76行\ r \n ---从抛出异常的上一个位置开始的堆栈跟踪结束---\r \n在System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(任务任务)\ r \n在System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(任务任务)\ r \n在System.Threading.Tasks.TaskHelpersExtensions.d__3`1.MoveNext()\ r \n ---结束从抛出异常的先前位置堆栈跟踪---\r \n在System.Runtime.CompilerServices上的System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(任务任务)\ r \n System.Web.Http.Controllers.ApiControllerActionInvoker.d__0.MoveNext()\ r \n中的.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(任务任务)\ r \n \n ---从抛出异常的上一个位置开始的堆栈跟踪结束--- r \n在System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(任务任务)\ r \n,位于System.Web.Http.Controllers.ActionFilterResult的System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(任务任务)\ r \n. d__2.MoveNext()\ r \n ---从抛出异常的上一个位置开始的堆栈跟踪结束---\r \n在系统.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(任务任务)\ r \n在系统中System.Web.Http.Dispatcher.HttpControllerDispatcher.d__1.MoveNext()"}中的.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(任务任务)\ r \n

有谁知道发生了什么？我不知道为什么它找不到那种方法.

我的bin文件夹包含

System.Web.Http.dll System.Web.Http.Owin.dll System.Net.Http.dll

ApplicationUserManager

public sealed class ApplicationUserManager : UserManager<ApplicationUser>
    {
        public ApplicationUserManager(IUserStore<ApplicationUser> store) : base(store)
        {
        }
        public static ApplicationUserManager Create(IdentityFactoryOptions<ApplicationUserManager> options,
                                                    IOwinContext context)
        {
            var appDbContext = context.Get<ApplicationDbContext>();
            var appUserManager = new ApplicationUserManager(new UserStore<ApplicationUser>(appDbContext));

            appUserManager.UserValidator = new UserValidator<ApplicationUser>(appUserManager)
            {
                AllowOnlyAlphanumericUserNames = true,
                RequireUniqueEmail = false,
            };
            appUserManager.PasswordValidator = new PasswordValidator
            {
                RequiredLength = 12,
                RequireNonLetterOrDigit = true,
                RequireUppercase = true,
                RequireLowercase = true,
                RequireDigit = true
            };
            appUserManager.MaxFailedAccessAttemptsBeforeLockout = 3;
            appUserManager.DefaultAccountLockoutTimeSpan = TimeSpan.FromHours(1);
            return appUserManager;
        }
    }

BaseApiController

public class BaseApiController : ApiController
    {
        private ModelFactory _modelFactory;
        private readonly ApplicationUserManager _applicationUserManager = null;
        protected ApplicationUserManager AppUserManager => _applicationUserManager ?? Request.GetOwinContext().GetUserManager<ApplicationUserManager>();
        protected ModelFactory ModelFactory => _modelFactory ?? (_modelFactory = new ModelFactory(Request, AppUserManager));
        protected IHttpActionResult GetErrorResult(IdentityResult result)
        {
            if (result == null)
                return InternalServerError();

            if (result.Succeeded) return null;

            if (result.Errors != null)
                foreach (var error in result.Errors)
                    ModelState.AddModelError(string.Empty, error);

            if (ModelState.IsValid)
                return BadRequest();

            return BadRequest(ModelState);
        }
        private readonly ApplicationRoleManager _appRoleManager = null;
        protected ApplicationRoleManager AppRoleManager => _appRoleManager ?? Request.GetOwinContext().GetUserManager<ApplicationRoleManager>();
    }

Answer 1

我找到了解决方案.

在我构建时,有一些警告会进入输出窗口,但不会显示在主错误/警告窗口中.

他们与汇编冲突有关,并建议将汇编重定向放在web.Config中.

一旦我完成了所有(大约80)它现在有效.

例如

      <dependentAssembly>
        <assemblyIdentity name="System.Net.Http" culture="neutral" publicKeyToken="b03f5f7f11d50a3a" />
        <bindingRedirect oldVersion="0.0.0.0-4.2.0.0" newVersion="4.2.0.0" />
      </dependentAssembly>