为什么这个AutoMapper配置不能正确映射？

Question

鉴于下面的代码如下,为什么我在映射阶段一直遇到异常？两个DTO真的那么不同吗？这是抛出异常的符号服务器pdb的代码行.

throw new AutoMapperMappingException(context, "Missing type map configuration or unsupported mapping.");

真正让我感到害怕的是@jbogard在AutoMapper方面完成了异常处理和检测的杀手级工作,源和目标对象都有大量的上下文数据,以及抛出异常时映射器的状态.而我仍然无法弄明白.

void Main()
{
    var config = new MapperConfiguration(cfg =>
    {
        cfg.ShouldMapProperty = p => p.GetMethod.IsPublic || p.GetMethod.IsVirtual;
        cfg.CreateMap<Customer, Customer2>()
        .ReverseMap();
    });

    config.AssertConfigurationIsValid();

    Customer request = new Customer
    {
        FirstName = "Hello", LastName = "World"
    };
    request.FullName = request.FirstName + " " + request.LastName;

    Customer2 entity = Mapper.Map<Customer, Customer2>(request);


    Console.WriteLine("finished");
}



public class Customer
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string FullName { get; set; }
}

[Serializable()]
public partial class Customer2
{
    private string _firstName;
    private string _lastName;
    private string _fullName;

    public virtual string FirstName
    {
        get
        {
            return this._firstName;
        }
        set
        {
            this._firstName = value;
        }
    }
    public virtual string LastName
    {
        get
        {
            return this._lastName;
        }
        set
        {
            this._lastName = value;
        }
    }
    public virtual string FullName
    {
        get
        {
            return this._fullName;
        }
        set
        {
            this._fullName = value;
        }
    }
}

谢谢你,斯蒂芬

Answer 1

拉动源并将AutoMapper.Net4项目添加到控制台后,我能够诊断出问题.

当Jimmy删除Static版本然后通过我重新添加它时,引入了API,无论如何,现在使用新API的语法略有不同.下面是添加源代码时的例外情况,请注意这个与通过Nuget最初抛出的内容之间的区别？

throw new InvalidOperationException("Mapper not initialized. Call Initialize with appropriate configuration."); 

这导致我回到GitHub上的入门文档,在那里我很快发现我没有像这样初始化映射器

var mapper = config.CreateMapper();  

而不是静态Mapper

Cutomer2 entity = Mapper.Map<Customer, Cutomer2>(request);

你可以像上面那样使用上面的IMapper接口

Cutomer2 entity = mapper.Map<Customer, Cutomer2>(request);

问题解决了.希望这可以帮助