我注意到XmlSerializer和通用列表(特別是List<int>
)奇怪的行爲。我想知道是否有人曾經見過或知道發生了什麼。它看起來好像序列化工作正常,但反序列化想要添加額外的項目到列表中。下面的代碼演示了這個問題。反序列化列表<int>與XmlSerializer導致額外項目
Serializable類:
public class ListTest
{
public int[] Array { get; set; }
public List<int> List { get; set; }
public ListTest()
{
Array = new[] {1, 2, 3, 4};
List = new List<int>(Array);
}
}
測試代碼:
ListTest listTest = new ListTest();
Debug.WriteLine("Initial Array: {0}", (object)String.Join(", ", listTest.Array));
Debug.WriteLine("Initial List: {0}", (object)String.Join(", ", listTest.List));
XmlSerializer serializer = new XmlSerializer(typeof(ListTest));
StringBuilder xml = new StringBuilder();
using(TextWriter writer = new StringWriter(xml))
{
serializer.Serialize(writer, listTest);
}
Debug.WriteLine("XML: {0}", (object)xml.ToString());
using(TextReader reader = new StringReader(xml.ToString()))
{
listTest = (ListTest) serializer.Deserialize(reader);
}
Debug.WriteLine("Deserialized Array: {0}", (object)String.Join(", ", listTest.Array));
Debug.WriteLine("Deserialized List: {0}", (object)String.Join(", ", listTest.List));
調試輸出:
Initial Array: 1, 2, 3, 4
Initial List: 1, 2, 3, 4
XML:
<?xml version="1.0" encoding="utf-16"?>
<ListTest xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Array>
<int>1</int>
<int>2</int>
<int>3</int>
<int>4</int>
</Array>
<List>
<int>1</int>
<int>2</int>
<int>3</int>
<int>4</int>
</List>
</ListTest>
Deserialized Array: 1, 2, 3, 4
Deserialized List: 1, 2, 3, 4, 1, 2, 3, 4
請注意,數組和列表似乎都已正確地序列化爲XML,但是在反序列化中,數組出現正確,但列表中出現了一組重複的項目。有任何想法嗎?
謝謝你的答案 - 正如我在下面的評論中提到的,我不知道解串器能夠反序列化過程變異成員的狀態(在大多數情況下,我認爲它只是設置新的價值觀,對不對? )。是列表它可以做到這一點的唯一類?是否有一些引用指出解串器可以改變哪些類? –
daveaglick
2012-03-06 18:33:42