C#model类与XML转换类

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Json作为现在API中通用的数据传输格式,目前有Newtonsoft.Json.dll进行转换,那么XML是不是有相关的方法可以转换呢?

原来也是有的,不过需要一定的编写。

转自https://www.cnblogs.com/dotnet261010/p/6513618.html

1、代码如下:

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.IO;using System.Xml.Serialization;namespace OAServiceInvoke{    public class XMLSerialize    {        public static string XmlSerialize<T>(T obj)        {            using (StringWriter sw = new StringWriter())            {                Type t = obj.GetType();                XmlSerializer serializer = new XmlSerializer(obj.GetType());                serializer.Serialize(sw, obj);                sw.Close();                return sw.ToString();            }        }        public static T DESerializer<T>(string strXML) where T:class        {            try            {                using (StringReader sr = new StringReader(strXML))                {                    XmlSerializer serializer = new XmlSerializer(typeof(T));                    return serializer.Deserialize(sr) as T;                }            }            catch            {                return null;            }        }    }}

2、序列化常用Attribute讲解说明:转自http://blog.csdn.net/zzy7075/article/details/50770062


[XmlRootAttribute("MyCity", Namespace="abc.abc", IsNullable=false)]     // 当该类为Xml根节点时,以此为根节点名称。
public class City
[XmlAttribute("AreaName")]    // 表现为Xml节点属性。<... AreaName="..."/>
public string Name
[XmlElementAttribute("AreaId", IsNullable = false)]    // 表现为Xml节点。<AreaId>...</AreaId>
public string Id
[XmlArrayAttribute("Areas")]    // 表现为Xml层次结构,根为Areas,其所属的每个该集合节点元素名为类名。<Areas><Area ... /><Area ... /></Areas>
public Area[] Areas
[XmlElementAttribute("Area", IsNullable = false)]    // 表现为水平结构的Xml节点。<Area ... /><Area ... />...
public Area[] Areas
[XmlIgnoreAttribute]    // 忽略该元素的序列化。


把这些属性与model类的相关属性,配合使用,就可以自由设置相关XML的具体格式了。


比如如下的Model类

    [XmlRootAttribute("MyCity", Namespace = "abc.abc", IsNullable = false)]    public class City    {        [XmlAttribute("CityName")]         public string Name        {            get;            set;        }        [XmlAttribute("CityId")]         public string Id        {            get;            set;        }        [XmlArrayAttribute("Areas")]        public Area[] Areas        {            get;            set;        }    }    [XmlRootAttribute("MyArea")]    public class Area    {        [XmlAttribute("AreaName")]         public string Name        {            get;            set;        }        [XmlElementAttribute("AreaId", IsNullable = false)]        public string Id        {            get;            set;        }        [XmlElementAttribute("Street", IsNullable = false)]        public string[] Streets        {            get;            set;        }    }

经过如下的代码转换:

    static void Main(string[] args)    {        Area area1 = new Area();        area1.Name = "Pudong";        area1.Id = "PD001";        area1.Streets = new string [] { "street 001", "street 002" };        Area area2 = new Area();        area2.Name = "Xuhui";        area2.Id = "XH002";        area2.Streets = new string [] { "street 003", "street 004" };        City city1 = new City();        city1.Name = "Shanghai";        city1.Id = "SH001";        city1.Areas = new Area[] { area1, area2 };        XmlSerializer.SaveToXml(@"C:\temp\XML\output003.xml", city1);    }

就变成这样的XML

<?xml version="1.0" encoding="utf-8"?><MyCity xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"        xmlns:xsd="http://www.w3.org/2001/XMLSchema"        CityName="Shanghai" CityId="SH001" xmlns="abc.abc">  <Areas>    <Area AreaName="Pudong">      <AreaId>PD001</AreaId>      <Street>street 001</Street>      <Street>street 002</Street>    </Area>    <Area AreaName="Xuhui">      <AreaId>XH002</AreaId>      <Street>street 003</Street>      <Street>street 004</Street>    </Area>  </Areas></MyCity>


3、如果要去掉根节点的xmlns:xsd和xmlns:xsi属性

则需要将序列化的方法修改为:


        public static string XmlSerialize<T>(T obj)        {            using (StringWriter sw = new StringWriter())            {                Type t = obj.GetType();                // 强制指定命名空间,覆盖默认的命名空间                  XmlSerializerNamespaces namespaces = new XmlSerializerNamespaces();                namespaces.Add(string.Empty, string.Empty);                                  XmlSerializer serializer = new XmlSerializer(obj.GetType());                // 序列化时增加namespaces                serializer.Serialize(sw, obj, namespaces);                sw.Close();                return sw.ToString();            }        }



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