如何序列化的字节数组在C＃中使用XML XmlSerializer的？ [英] How to serialize byte array to XML using XmlSerializer in C#?

问题描述

假设我们有一个结构，它的数据是用Marshal.PtrToStructure联合国管理的字节数组提供

Say we have a struct that it's data is provided by un-managed byte array using Marshal.PtrToStructure.

C＃的结构布局：

[StructLayout(LayoutKind.Sequential, Size = 128, CharSet = CharSet.Ansi, Pack = 1)]
public struct MNG_Y_Params
{
    public byte Number;
    public byte Version;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
    public byte[] OliNumber;
    public byte InterfaceType;
}

字节数组代表了非托管代码（ASCII）字符串。

The byte array represent a (ascii) string in the un-managed code.

这结构是另一种结构的成员（即有一定的其他成员）：

This struct is a member of another struct (that has some other members):

public struct MyData
{
    public int ID;
    public StructType structType;
    [XmlElement(ElementName="MNG_Y_Params")]
    public MNG_Y_Params y_params;
    [XmlElement(ElementName = "SimpleStruct2")]
    public SimpleStruct2 ss2;
};

所以，我们也有这方面的支持代码

So we also have this support code

public class XMLIgnore
{
    static public XmlSerializer customserialiser(MyData d)
    {
        XmlAttributes attrs = new XmlAttributes();
        attrs.XmlIgnore = true;
        XmlAttributeOverrides xmlOveride = new XmlAttributeOverrides();
        switch (d.structType)
        {
            case StructType.ST_1:
                xmlOveride.Add(typeof(MyData), "ss2", attrs);
                break;
            case StructType.ST_2:
                xmlOveride.Add(typeof(MyData), "y_params", attrs);
                break;
            default:
                break;
        }
        return new XmlSerializer(typeof(MyData), xmlOveride);
    }
}

和保存方法

    static void SaveToXml(object obj, string fileName, XmlSerializer writer)
    {
        //XmlSerializer writer = new XmlSerializer(obj.GetType());
        using (StreamWriter file = new StreamWriter(fileName))
        {
            writer.Serialize(file, obj);
        }
    }

有关的例子中，我们只希望产生一些数据。

For the example we'd just generate some data.

        MNG_Y_Params yParams = new MNG_Y_Params();
        yParams.Version = 1;
        yParams.InterfaceType = 15;
        yParams.Number = 35;
        ASCIIEncoding enc = new ASCIIEncoding();
        yParams.OliNumber = enc.GetBytes("#1");

        MyData md1 = new MyData();
        md1.ID = 1;
        md1.structType = StructType.ST_1;
        md1.y_params = yParams;

        XmlSerializer writer = XMLIgnore.customserialiser(md1);
        SaveToXml(md1, @"C:\temp\dataOne.xml", writer);

预计XML：

Expected XML:

<?xml version="1.0" encoding="utf-8"?>
<MyData xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <ID>1</ID>
  <structType>ST_1</structType>
  <MNG_Y_Params>
    <Number>35</Number>
    <Version>1</Version>
    <OliNumber>#1</OliNumber>
    <InterfaceType>15</InterfaceType>
  </MNG_Y_Params>
</MyData>

结果XML：

Result XML:

<?xml version="1.0" encoding="utf-8"?>
<MyData xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <ID>1</ID>
  <structType>ST_1</structType>
  <MNG_Y_Params>
    <Number>35</Number>
    <Version>1</Version>
    <OliNumber>IzE=</OliNumber>
    <InterfaceType>15</InterfaceType>
  </MNG_Y_Params>
</MyData>

请关注字节数组成员（OliNumber）结果上。

Please focus on the byte array member (OliNumber) result.

有，我们可以在这里使用一个属性？
我缺少什么？

Is there an attribute that we could use here? What am I missing?

感谢您的时间和帮助。

宜兰

有关的引用

推荐答案

的的XmlSerializer 在默认情况下将使用base 64编码编码的字节数组。如果您使用此网站，并在 IZE粘贴= ，并对其进行解码，其结果将是 1 。您可以通过设置的 XmlElementAttribute.DataType 。我不知道，如果 [XmlElement的（数据类型=字符串）] 将工作，但你可以试试。使用 [XmlElement的（数据类型=hexBinary的）] 将产生的原始字节。

The XmlSerializer by default will encode the byte arrays using base 64 encoding. If you use this site and paste in IzE=, and decode it, the result will be #1. You can change the encoding by setting the XmlElementAttribute.DataType. I'm not sure if [XmlElement(DataType = "string")] will work, but you can try it. Using [XmlElement(DataType = "hexBinary")] will generate the raw bytes.

这篇关于如何序列化的字节数组在C＃中使用XML XmlSerializer的？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！