Automapper,Mapper未初始化.使用正确的配置调用初始化

Question

当我尝试将数据提交到数据库时,我收到以下错误:

{"Success":false,"Error":true,"ErrorType":2,"Message":"System.InvalidOperationException:Mapper未初始化.使用适当的配置调用Initialize.如果您尝试通过容器使用映射器实例或否则,请确保您没有对静态Mapper.Map方法的任何调用,并且如果您使用ProjectTo或UseAsDataSource扩展方法,请确保传入适当的IConfigurationProvider实例.\ r \n在AutoMapper.Mapper.get_Instance ()\ r \n在AutoMapper.Mapper.Map(对象源,对象目标,类型sourceType,类型destinationType)\ r \n在GoalPear.Web.Areas.PM.Controllers.CompanyController.SaveData(CompanyFormViewModel companyFormViewModel)

请告诉我为什么我会收到这个错误,因为经过这么多的努力我无法弄明白.

这是我的控制器代码

public CompanyController() { }
private readonly ICompanyService _companyService;
public CompanyController(ICompanyService companyService) {
    _companyService = companyService;
}

这是控制器中的SaveData方法

[HttpPost]
public JsonResult SaveData(CompanyFormViewModel companyFormViewModel)
{
    try
    {
        int? id = null;
        Company company;
        if (companyFormViewModel.Id == null)
        {
            company = new Company();
        }
        else
        {
            id = (int)companyFormViewModel.Id;
            company = _companyService.GetCompany((int)id);
        }

        company = (Company)Mapper.Map(
            companyFormViewModel, 
            company, 
            typeof(CompanyFormViewModel), 
            typeof(Company));
        CompanyValidator companyValidator = new CompanyValidator();
        ValidationResult validationResult = companyValidator.Validate(company);

        if (validationResult.IsValid) //check for any validation errors
        {
            if (id == null)
            {
                _companyService.CreateCompany(company);
            }
            else
            {
                _companyService.Update(company);
            }

            _companyService.SaveCompany();
            return new JsonSuccessResult();
        }
        else
        {
            Response.StatusCode = (int)ResponseCode.UnprocessableEntity;
            return new JsonErrorResult(validationResult);
        }
    }
    catch (Exception ex)
    {
        Response.StatusCode = (int)ResponseCode.UnprocessableEntity;
        return new JsonErrorResult(ex.ToString());
    }
}

我的表单视图代码

@using (Html.BeginForm("SaveData", "Company", FormMethod.Post, new { @class = "", @id = "validate", @role = "form" })) { 
@*<form id="validate" method="POST" action="javascript:alert('Form #validate submited');">*@
<div class="head tac">
    <h1>Register Your Company With Us!!!</h1>
</div>
<div class="block">
    <div class="header">
        <div class="side pull-right">
            <button class="btn btn-default btn-clean" onclick="clear_form('#validate');" type="button">Clear form</button>
    </div>
</div>

<div class="content controls">
    <div class="form-row">
        <div class="col-md-3">Company Name:</div>
            <div class="col-md-9">
                @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "validate[required,maxSize[100]]", @placeholder = @Html.DisplayNameFor(model => model.Name) } })

            </div>
        </div>
        <div class="form-row">
            <div class="col-md-3">Owner Name:</div>
                <div class="col-md-9">
                    @Html.EditorFor(model => model.Owner, new { htmlAttributes = new { @class = "validate[required,maxSize[60]]", @placeholder = @Html.DisplayNameFor(model => model.Owner) } })

                </div>
            </div>
            <div class="form-row">
                <div class="col-md-3">Email:</div>
                    <div class="col-md-4">
                        @Html.EditorFor(model => model.Email, new { htmlAttributes = new { @class = "validate[required,maxSize[60]]" ,@type="email", @placeholder = @Html.DisplayNameFor(model => model.Email) } })
                    </div>
                </div>
                <div class="form-row">
                    <div class="col-md-3">Password:</div>
                    <div class="col-md-9">
                        @Html.EditorFor(model => model.Password, new { htmlAttributes = new { @class = "validate[required,maxSize[100]]", @type="password", @id="password", @placeholder = @Html.DisplayNameFor(model => model.Password) } })


                    </div>
                </div>
                <div class="form-row">
                    <div class="col-md-3">Confirm Password:</div>
                    <div class="col-md-9">
                        @Html.EditorFor(model => model.Password, new { htmlAttributes = new { @class = "validate[required,equals[password]]", @type = "password", @placeholder = @Html.DisplayNameFor(model => model.Password) } })

                    </div>
                </div>
        @* I have omitted some code from here for saving your time to read*@  

                <div class="form-row">
                    <div class="col-md-3">Address:</div>
                    <div class="col-md-9">

                        @Html.EditorFor(model => model.Address, new { htmlAttributes = new { @class = "validate[required,maxSize[60]]", @placeholder = @Html.DisplayNameFor(model => model.Address) } })
                    </div>
                </div>
            </div>
            <div class="footer">
                <div class="side pull-right">
                    <div class="btn-group">
                        <button class="btn btn-default" type="button" onclick="$('#validate').validationEngine('hide');">Hide prompts</button>
                        <button class="btn btn-success" type="submit">Submit</button>
                    </div>
                </div>
            </div>
        </div>
   }

这是我的公司模型代码

public string Name {get;set;}
public string Logo { get; set; }
public string Address { get; set; }
public string Owner { get; set; }
public int Size { get; set; }
public string Email { get; set; }
public int Phone { get; set; }
public int FaxNo { get; set; }
public string Password { get; set; }
public string Country { get; set; }
public string State { get; set; }

这是ViewModel代码

public CompanyFormViewModel() { }
public int? Id { get; set; }
[DisplayName(" Company Name")]
public string Name { get; set; }
[DisplayName("Owner")]
public string Owner { get; set; }
[DisplayName("Email")]
public string Email { get; set; }
[DisplayName("Password")]
public string Password { get; set; }
[DisplayName("Address")]
public string Address { get; set; }

这是DomainToViewModelMapping配置文件

cfg.CreateMap<Company, CompanyFormViewModel>()
    .ForMember(vm => vm.Id, map => map.MapFrom(m => m.Id))
    .ForMember(vm => vm.Name, map => map.MapFrom(m => m.Name))
    .ForMember(vm => vm.Owner, map => map.MapFrom(m => m.Owner))
    .ForMember(vm => vm.Email, map => map.MapFrom(m => m.Email))
    .ForMember(vm => vm.Password, map => map.MapFrom(m => m.Password))
    .ForMember(vm => vm.Address, map => map.MapFrom(m => m.Address));

我的viewModeltoDomainMapping配置文件

cfg.CreateMap<CompanyFormViewModel, Company>()
    .ForMember(m => m.Id, map => map.MapFrom(vm => vm.Id))
    .ForMember(m => m.Name, map => map.MapFrom(vm => vm.Name))
    .ForMember(m => m.Owner, map => map.MapFrom(vm => vm.Owner))
    .ForMember(m => m.Email, map => map.MapFrom(vm => vm.Email))
    .ForMember(m => m.Password, map => map.MapFrom(vm => vm.Password))
    .ForMember(m => m.Address, map => map.MapFrom(vm => vm.Address));

为什么我没有初始化映射器的这个错误？

Answer 1

无法看到初始化映射的位置.

解:

您可以创建映射配置文件,例如:

public class MappingProfile : Profile
{
    public MappingProfile()
    {
       CreateMap<Company, CompanyFormViewModel>()
          .ForMember(vm => vm.Id, map => map.MapFrom(m => m.Id))
          .ForMember(vm => vm.Name, map => map.MapFrom(m => m.Name))
          .ForMember(vm => vm.Owner, map => map.MapFrom(m => m.Owner))
          .ForMember(vm => vm.Email, map => map.MapFrom(m => m.Email))
          .ForMember(vm => vm.Password, map => map.MapFrom(m => m.Password))
          .ForMember(vm => vm.Address, map => map.MapFrom(m => m.Address));
       CreateMap<CompanyFormViewModel, Company>()
          .ForMember(m => m.Id, map => map.MapFrom(vm => vm.Id))
          .ForMember(m => m.Name, map => map.MapFrom(vm => vm.Name))
          .ForMember(m => m.Owner, map => map.MapFrom(vm => vm.Owner))
          .ForMember(m => m.Email, map => map.MapFrom(vm => vm.Email))
          .ForMember(m => m.Password, map => map.MapFrom(vm => vm.Password))
          .ForMember(m => m.Address, map => map.MapFrom(vm => vm.Address)); 

    }
}

然后在映射配置文件中初始化 Global.asax.cs

    public class AutoMapperConfiguration
    {
        public static void Configure()
        {
            Mapper.Initialize(x =>
            {
                x.AddProfile<MappingProfile>();
            });

            Mapper.Configuration.AssertConfigurationIsValid();               
        }
    }

最后,不要忘记在您的配置中配置自动映射器Application_Start()

//Configure Automapper
AutoMapperConfiguration.Configure();

Answer 2

Mapper.Map您需要使用通过配置创建的映射器实例，而不是使用静态方法，如下所示：

var mapper = cfg.CreateMapper();
var company = (Company)mapper.Map(companyFormViewModel, company, typeof(CompanyFormViewModel), typeof(Company));

在最新版本中使用映射器的首选方式是通过IMapper接口。如果您也使用 DI 容器，则可以IMapper通过方法重载绑定/注册来解析实例config.CreateMapper()，该方法重载采用实例工厂委托（即容器的实例工厂方法）。如果您不使用 DI 容器，您可以创建示例MapperFactory类，该类将负责映射器实例的创建及其配置。

例子：

 var config = new MapperConfiguration(cfg =>
            {
                //cfg.CreateMap()...
                //cfg.AddProfile()... etc...
            });
var mapper = config.CreateMapper();