尝试使用DataContractSerializer反序列化int列表时，收到意外的InvalidOperationException

Question

期望：将XML文件中的整数列表读取到名为itemPool的列表中；

结果：“InvalidOperationException:未能将类型System.Collections.Generic.List`1[System.Int32]添加到已知的类型集合中。已为XML名称注册了一个类型http://schemas.microsoft.com/2003/10/Serialization/Arrays:ArrayOfint"

我必须遵循代码：

using System.Collections.Generic;
using System.Runtime.Serialization;

using Characters;
using Items;

[DataContract(Name ="Savefile", Namespace ="")]
public class Savefile
{
    [DataMember(Name ="Characters")]
    public List<Character> characters = new List<Character>();

    [DataMember(Name = "ItemPool")]
    public List<int> itemPool = new List<int>();

    public void Initialize()
    {
        foreach (Character c in characters)
            c.Initialize();

        ItemPool.Load(itemPool.ToArray());
    }
}

另一个类使用下面的方法:

    public static void LoadFromSavefile()
    {
        DataContractSerializer serializer = new DataContractSerializer(typeof(Savefile));
        FileStream stream = new FileStream(Path.Combine(Application.dataPath, _savefilePath), FileMode.Open);

        _currentSave = serializer.ReadObject(stream) as Savefile;

        stream.Close();
    }

以及上面的类从中读取的以下xml文件。

<?xml version="1.0" encoding="utf-8"?>
<Savefile xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
  <Characters>
    <Character>
      <... not relevant clutter.../>
    </Character>
  </Characters>
  <ItemPool>
    <value>1</value>
  </ItemPool>
</Savefile>

Answer 1

使用DataContractSerializer编辑。

using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Runtime.Serialization;
using System.Collections.Generic;
using System.IO;
using System.Xml;
using System.Xml.Serialization;

namespace UnitTestProject1 {

    [DataContract(Name = "Savefile", Namespace = "")]
    public class Savefile {
        [DataMember(Name = "Characters", Order = 0)]
        public Characters Characters { get; private set; }

        [DataMember(Name = "ItemPool", Order = 1)]
        public Items ItemPool { get; private set; }

    }

    [CollectionDataContract(Name = "Characters", ItemName = "Character", Namespace = "")]
    public class Characters : List<Character> {

    }

    public class Character {
        public string Weapon { get; set; }
        internal void Initialize() {
            throw new NotImplementedException();
        }
    }

    [CollectionDataContract(Name = "ItemPool", ItemName = "Item", Namespace = "")]
    public class Items : List<int> {
        public int value { get; set; }
    }

    [TestClass]
    public class UnitTestSerialization {
        [TestMethod]
        public void TestMethod1() {
            DataContractSerializer serializer = new DataContractSerializer(typeof(Savefile));
            FileStream stream = new FileStream("SaveFile2.xml", FileMode.Open);
            XmlDictionaryReader reader = XmlDictionaryReader.CreateTextReader(stream, new XmlDictionaryReaderQuotas());

            Savefile _currentSave = (Savefile)serializer.ReadObject(reader);
            Assert.IsNotNull(_currentSave);


            stream.Close();
        }
    }
}

xml文件

<?xml version="1.0" encoding="utf-8"?>
<Savefile>
  <Characters>
    <Character>
      <Weapon>Axe</Weapon>
    </Character>
    <Character>
      <Weapon>Mace</Weapon>
    </Character>
    <Character>

    </Character>
  </Characters>
  <ItemPool>
    <Item>1</Item>
    <Item>2</Item>
  </ItemPool>
</Savefile>