将xml字符串属性映射到C#属性 [英] Map xml string property to C# properties

问题描述

我需要将xml属性映射到c#属性.

I need to map a xml property to c# properties.

var src = new Source();
src.Id = 1;
src.Name = "Test";
src.Address = "<Country>MyCountry</Country><Prefecture>MyPrefecture</Prefecture><City>MyCity</City>";

class Source
{
public string ID{ get; set; }
public string Name{ get; set; }
public string Address{ get; set; }
}        

        Class Destination
        {
        public string ID{ get; set; }
        public string Name{ get; set; }
        public string Country { get; set;}
        public string Prefecture { get; set;}
        public string City { get; set;}
        }

是否可以通过AutoMapper实现?

Is it possible to achieve it through AutoMapper?

推荐答案

您可以执行以下操作.考虑您的来源类型.

You can do the following. Considering your source type.

var src = new Source();
src.ID = 1;
src.Name = "Test";
src.Address = "<Country>MyCountry</Country><Prefecture>MyPrefecture</Prefecture><City>MyCity</City>";

由于您的源类型(src.Address)没有根元素，所以我们添加一个根元素并将xml解析为XDocument.

Since your source type (src.Address) doesn't have a root element, let's add one and parse the xml to a XDocument.

XDocument xdoc = new XDocument();
xdoc = XDocument.Parse($"<Root>{src.Address}</Root>");

现在在初始化Automapper时，您需要映射字段.

Now during Initializing of Automapper, you need to map fields.

Mapper.Initialize(cfg =>
           cfg.CreateMap<XElement, Destination>()
               .ForMember(dest => dest.Country, opt => opt.MapFrom(x=>x.Element(nameof(Destination.Country)).Value))
               .ForMember(dest => dest.City, opt => opt.MapFrom(x => x.Element(nameof(Destination.City)).Value))
               .ForMember(dest => dest.Prefecture, opt => opt.MapFrom(x => x.Element(nameof(Destination.Prefecture)).Value)));

现在您可以按以下步骤解决它.

Now you can resolve it as following.

 Destination result = Mapper.Map<XElement, Destination>(xdoc.Root);

更新

您也可以为此目的使用ConstructUsing，这会将与Xml相关的代码隐藏在其他代码之外.

You can using ConstructUsing as well for the purpose, that would hide away the Xml related code away from your other codes.

var src = new Source();
src.ID = "1";
src.Name = "Test";
src.Address = "<Country>MyCountry</Country><Prefecture>MyPrefecture</Prefecture><City>MyCity</City>";

XDocument xdoc = new XDocument();
xdoc = XDocument.Parse($"<Root>{src.Address}</Root>");

Mapper.Initialize(cfg =>
                    cfg.CreateMap<Source, Destination>()
                    .ConstructUsing(x=>ConstructDestination(x))
                 );

ConstructDestination 定义为

static Destination ConstructDestination(Source src)
{
   XDocument xdoc = new XDocument();
   xdoc = XDocument.Parse($"<Root>{src.Address}</Root>");

   return new Destination
   {
     Country = xdoc.Root.Element(nameof(Destination.Country)).Value,
     City = xdoc.Root.Element(nameof(Destination.City)).Value,
     Prefecture = xdoc.Root.Element(nameof(Destination.Prefecture)).Value,
   };

 }

您的客户端代码现在看起来更干净了.

Your client code looks much cleaner now.

Destination result = Mapper.Map<Source, Destination>(src);

这篇关于将xml字符串属性映射到C#属性的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！