Automapper返回空对象，源对象不为空.为什么会这样呢?

本文关键字：对象 为什么 返回 Automapper | 更新日期: 2023-09-27 17:50:27

所以我有这个webapiprice。web。api。models。category类

     /*
 * Service model class, that will represent categories
 */
using System;
using System.Collections.Generic;
namespace WebApiPrice.Web.Api.Models
{
    public class Category
    {
        private List<Link> _links;
        public long CategoryId { get; set; }
        public string Name { get; set; }
        public DateTime Timestamp { get; set; }
        public List<Product> Products { get; set; }
        public List<Link> Links
        {
            get { return _links ?? (_links = new List<Link>()); }
            set { _links = value; }
        }
        public void AddLink(Link link)
        {
            Links.Add(link);
        }
    }
}

我试图映射到这个WebApiPrice.Data.Entities.Category类:

/*
 *  Domain class for database table Category
 */
using System;
using System.Collections.Generic;
namespace WebApiPrice.Data.Entities
{
    public class Category : IVersionedEntity
    {
        private readonly IList<Product> _products = new List<Product>();
        public virtual long CategoryId { get; set; }
        public virtual string Name { get; set; }
        public virtual User CreatedBy { get; set; }
        public virtual User EditedBy { get; set; }
        public virtual DateTime Timestamp { get; set; }
        public virtual IList<Product> Products
        {
            get { return _products; }
        }
        public virtual byte[] Version { get; set; }
    }
}

我的映射器配置是这样的:

using AutoMapper;
using WebApiPrice.Common.TypeMapping;
using WebApiPrice.Web.Api.Models;
namespace WebApiPrice.Web.Api.AutoMappingConfiguration
{
    public class CategoryToCategoryEntityAutoMapperTypeConfigurator : IAutoMapperTypeConfigurator
    {
        public void Configure()
        {
            Mapper.CreateMap<Category, Data.Entities.Category>()
                .ForMember(opt => opt.Version, x => x.Ignore())
                .ForMember(opt => opt.CreatedBy, x => x.Ignore())
                .ForMember(opt => opt.CategoryId, x => x.Ignore())
                .ForMember(opt => opt.Name, x => x.Ignore())
                .ForMember(opt => opt.EditedBy, x => x.Ignore())
                .ForMember(opt => opt.Timestamp, x => x.Ignore());
        }
    }
}

我对映射器的调用在这里:

public Product AddProduct(NewProduct newProduct)
        {
            var productEntity = _autoMapper.Map<Data.Entities.Product>(newProduct);
            productEntity.Category = _autoMapper.Map<Data.Entities.Category>(newProduct.Category);
            productEntity.Type = _autoMapper.Map<Data.Entities.Type>(newProduct.Type);
            _queryProcessor.AddProduct(productEntity);
            var product = _autoMapper.Map<Product>(productEntity);
            return product;
        }

newProduct到Product可以映射，但是Category和type都不能。我的HTTP请求正文看起来像这样:

{"名称":"汤团"、"类别":{"被":"1","名字":"食物"},"类型":{"类型id":"1"}}

引用

我试着写有和没有名称的类别。newProduct。类别由给定的变量填充，数据库中有这样的值。

怎么了?还有什么需要我提供的信息吗?

我真的卡住了，任何建议都很有价值。

Automapper返回空对象，源对象不为空.为什么会这样呢?

尝试删除映射器中的忽略行:

public void Configure() {
    Mapper.CreateMap<Category, Data.Entities.Category>();
}
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