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c# - 继承配置文件的自动映射器在 json 中返回额外的属性

问题描述

根据我的阅读，标准是继承 Profile 类以便 Automapper 检测地图。https://automapper.org/

public class GamerVM : Profile
{
    public GamerVM()
    {
        CreateMap<GamerVM, Gamer>();
        CreateMap<Gamer, GamerVM>();
    }
    public int Id { get; set; }
    public string Name { get; set; }
    public string Tag { get; set; }
}

如果我在我的视图模型上继承这个类，则会返回带有额外属性的 Json：

 {
    "id": 8,
    "name": "Ashton Heir",
    "tag": "Legend",
    "defaultMemberConfig": {
        "nameMapper": {
            "getMembers": {},
            "namedMappers": [
                {
                    "methodCaseSensitive": false
                },
                {},
                {
                    "prefixes": [
                        "Get"
                    ],
                    "postfixes": [],
                    "destinationPrefixes": [],
                    "destinationPostfixes": []
                }
            ]
        },
        "memberMappers": [
            {
                "nameMapper": {
                    "getMembers": {},
                    "namedMappers": [
                        {
                            "methodCaseSensitive": false
                        },
                        {},
                        {
                            "prefixes": [
                                "Get"
                            ],
                            "postfixes": [],
                            "destinationPrefixes": [],
                            "destinationPostfixes": []
                        }
                    ]
                }
            },
            {
                "sourceMemberNamingConvention": {
                    "splittingExpression": {
                        "pattern": "(\\p{Lu}+(?=$|\\p{Lu}[\\p{Ll}0-9])|\\p{Lu}?[\\p{Ll}0-9]+)",
                        "options": 0
                    },
                    "separatorCharacter": ""
                },
                "destinationMemberNamingConvention": {
                    "splittingExpression": {
                        "pattern": "(\\p{Lu}+(?=$|\\p{Lu}[\\p{Ll}0-9])|\\p{Lu}?[\\p{Ll}0-9]+)",
                        "options": 0
                    },
                    "separatorCharacter": ""
                }
            }
        ]
    }

我这样做正确吗？有没有办法让 JSON 忽略这些额外的属性？

标签： c#.net-coreautomapper

解决方案

您的模型不应继承 Profile。您将 Profile 子类化以配置模型到模型的映射。

public class GamerMappingProfile : Profile
{
    public GamerMappingProfile()
    {
        CreateMap<Gamer, GamerVM>();
        CreateMap<GamerVM, Gamer>();
    }
}

然后在创建映射器实例时加载配置文件。

var config = new MapperConfiguration(cfg => {
    cfg.AddProfile<GamerMappingProfile>();
    cfg.AddProfile<MyOtherProfile>();
});

var mapper = config.CreateMapper();

现在你的模型是干净的——它只包含你的属性并且序列化不需要额外的自定义代码。

自动扫描您的个人资料

http://docs.automapper.org/en/stable/Configuration.html#assembly-scanning-for-auto-configuration

从上面的链接复制

// Scan for all profiles in an assembly
// ... using instance approach:
var config = new MapperConfiguration(cfg => {
    cfg.AddProfiles(myAssembly);
});
// ... or static approach:
Mapper.Initialize(cfg => cfg.AddProfiles(myAssembly));

// Can also use assembly names:
Mapper.Initialize(cfg =>
    cfg.AddProfiles(new [] {
        "Foo.UI",
        "Foo.Core"
    });
);

// Or marker types for assemblies:
Mapper.Initialize(cfg =>
    cfg.AddProfiles(new [] {
        typeof(HomeController),
        typeof(Entity)
    });
);

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