AutoMapper没有按预期工作

本文关键字：工作 AutoMapper | 更新日期: 2023-09-27 18:18:16

我在我的域层有一个类，如下所示:

 public class Employee : AuditableEntity
    {
        public string FirstName { get; set; }
        public string Surname { get; set; }
        public double Salary{ get; set; }
        public int PhoneNo { get; set; }
        public double Bonus
        {
            get { return Salary + EmployeeAdditionals.Sum(e => e.Value); }
        }
        // virtual allow lazy loading
        public virtual ReadOnlyCollection<EmployeeAdditional> EmployeeAdditionals { get; private set; }
        // Paramterless constructor for EF
        public Employee()
        {
            EmployeeAdditionals = new List<EmployeeAdditional>();
        }
        public void AddAdditionalInfo(EmployeeAdditional additionalInfo)
        {
            additionalInfo.Employee = this;
            additionalInfo.EmployeeId = Id;
            ((Collection<EmployeeAdditional>) EmployeeAdditionals).Add(additionalInfo);
        }

然后我有以下viewModel类在我的MVC 5应用程序:

 public class EmployeeDetailsViewModel : BaseViewModel
    {
        public EmployeeDetailsViewModel()
        {
            Employee = new Employee();
        }
        public Employee Employee { get; set; }
        //Other fields
    }
    public class Employee
    {
        [DisplayName("Employee First Name")]
        public string FirstName { get; set; }
        [DisplayName("Employee Surname")]
        public string Surname{ get; set; }
        public double Salary{ get; set; }
        [RegEx for Phone Number and Error Mesage]
        public int PhoneNo{ get; set; }
        public double Bonus { get; set; }
    }

我有映射，然后在我的控制器和viewModel构建器映射我的视图模型到我的域模型和域模型回视图模型，我试图使用AutoMapper对此。

像下面这样使用手动映射:

// set domain from viewModel
employee.FirstName= model.Employee.FirstName;
//etc for rest of fields
// set view model from domain
viewModel.Employee.FirstName = employee.FirstName;
//etc for rest of fields

现在在我的AutoMapperBootstrapper类的Setup方法中，我有以下内容:

  Mapper.CreateMap<Domain.Models.Employee, Employee>();
  Mapper.CreateMap<Employee, Domain.Models.Employee>();

然后我使用这是以下在我的控制器和视图模型构建器:

//set domain from viewModel
Mapper.Map(employee, model.Employee);
// set viewmodel from domain
Mapper.Map(viewModel.Employee, employee);

当我在从域到viewModel的映射上遇到断点时，我看到了模型。Employee与屏幕上的值，但是当我跨过这条线时，值没有映射到域Employee，然后映射到模型。对于字符串，employee值被重置为null，对于double值被重置为0.0，等等。

我的配置或使用automapper是否有问题?

AutoMapper没有按预期工作

您传递错误的参数。如果您想使用现有实例，请确保第一个参数为source，第二个参数为destination。

尝试切换参数

//set domain from viewModel (viewModel is the source)
Mapper.Map(model.Employee, employee);
              ^^^^^         ^^^^^
              source      destination 
// set viewmodel from domain (domain is the source)
Mapper.Map(employee, viewModel.Employee);
            ^^^^^           ^^^^^
            source      destination

你的地图代码不应该是这样的吗?你必须使用Map()的实例，看起来你在使用Types 

//set domain from viewModel
Mapper.Map(viewEmployee, new model.Employee());
// set viewmodel from domain
Mapper.Map( employee, new viewmodel.Employee());

我希望你这样使用它:

var viewModel = Mapper.Map<ViewModel.Employee>(domainModel);  <-- this creates a ViewModel for a Domain Model

，反之为

var domainModel  = Mapper.Map<Domain.Employee>(viewModel);
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