C# XML 的序列化和反序列化
将自定义类型实例序列化为 XML；将 XML 反序列化为实例。
示例代码
DllConfig.cs
cs
using System.Collections.Generic;
using System.Text;
namespace ReadXML
{
public class DllConfig
{
public string DllName { get; set; }
public string NameSpaceName { get; set; }
public string ClassName { get; set; }
public string MethodName { get; set; }
public List<string> Parameters { get; set; }
public override string ToString()
{
StringBuilder sb = new StringBuilder();
sb.AppendFormat("DllName : {0}\r\nNameSpaceName ; {1}\r\nClassName : {2}\r\nMethodName : {3}\r\n",
DllName, NameSpaceName, ClassName, MethodName);
for (int i = 0; i < Parameters.Count; i++)
{
sb.AppendFormat("Parameters[{0}] : {1}\r\n", i, Parameters[i]);
}
return sb.ToString();
}
}
}Program.cs
cs
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
namespace ReadXML
{
class Program
{
private static string _configFile = "DllConfig.xml";
static void Main(string[] args)
{
if (!File.Exists(_configFile))
{
DllConfig config = new DllConfig();
config.DllName = "CalcSample.dll";
config.NameSpaceName = "CalcSample";
config.ClassName = "Calc";
config.MethodName = "Add";
config.Parameters = new List<string>() { "1", "2" };
List<DllConfig> configs = new List<DllConfig>();
configs.Add(config);
XmlHelper.XmlSerializeToFile(configs, _configFile, Encoding.UTF8);
}
if (File.Exists(_configFile))
{
StringBuilder sb = new StringBuilder();
using (FileStream fs = new FileStream(_configFile, FileMode.Open))
{
byte[] data = new byte[1024];
while (fs.Read(data, 0, 1024) > 0)
{
sb.Append(Encoding.UTF8.GetString(data));
}
}
List<DllConfig> configs = XmlHelper.XmlDeserializeFromFile<List<DllConfig>>(_configFile, Encoding.UTF8);
Console.WriteLine(configs[0].ToString());
}
else
{
Console.WriteLine("配置文件不存在.");
}
Console.Read();
}
}
}XmlHelper.cs
cs
using System;
using System.IO;
using System.Text;
using System.Xml;
using System.Xml.Serialization;
namespace ReadXML
{
public static class XmlHelper
{
private static void XmlSerializeInternal(Stream stream, object o, Encoding encoding)
{
if (o == null)
throw new ArgumentNullException("o");
if (encoding == null)
throw new ArgumentNullException("encoding");
XmlSerializer serializer = new XmlSerializer(o.GetType());
XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
settings.NewLineChars = "\r\n";
settings.Encoding = encoding;
settings.IndentChars = " ";
using (XmlWriter writer = XmlWriter.Create(stream, settings))
{
serializer.Serialize(writer, o);
writer.Close();
}
}
/// <summary>
/// 将一个对象序列化为 XML 字符串
/// </summary>
/// <param name="o">要序列化的对象</param>
/// <param name="encoding">编码方式</param>
/// <returns>序列化产生的 XML 字符串</returns>
public static string XmlSerialize(object o, Encoding encoding)
{
using (MemoryStream stream = new MemoryStream())
{
XmlSerializeInternal(stream, o, encoding);
stream.Position = 0;
using (StreamReader reader = new StreamReader(stream, encoding))
{
return reader.ReadToEnd();
}
}
}
/// <summary>
/// 将一个对象按 XML 序列化的方式写入到一个文件
/// </summary>
/// <param name="o">要序列化的对象</param>
/// <param name="path">保存文件路径</param>
/// <param name="encoding">编码方式</param>
public static void XmlSerializeToFile(object o, string path, Encoding encoding)
{
if (string.IsNullOrEmpty(path))
throw new ArgumentNullException("path");
using (FileStream file = new FileStream(path, FileMode.Create, FileAccess.Write))
{
XmlSerializeInternal(file, o, encoding);
}
}
/// <summary>
/// 从 XML 字符串中反序列化对象
/// </summary>
/// <typeparam name="T">结果对象类型</typeparam>
/// <param name="s">包含对象的 XML 字符串</param>
/// <param name="encoding">编码方式</param>
/// <returns>反序列化得到的对象</returns>
public static T XmlDeserialize<T>(string s, Encoding encoding)
{
if (string.IsNullOrEmpty(s))
throw new ArgumentNullException("s");
if (encoding == null)
throw new ArgumentNullException("encoding");
XmlSerializer mySerializer = new XmlSerializer(typeof(T));
using (MemoryStream ms = new MemoryStream(encoding.GetBytes(s)))
{
using (StreamReader sr = new StreamReader(ms, encoding))
{
return (T)mySerializer.Deserialize(sr);
}
}
}
/// <summary>
/// 读入一个文件，并按 XML 的方式反序列化对象。
/// </summary>
/// <typeparam name="T">结果对象类型</typeparam>
/// <param name="path">文件路径</param>
/// <param name="encoding">编码方式</param>
/// <returns>反序列化得到的对象</returns>
public static T XmlDeserializeFromFile<T>(string path, Encoding encoding)
{
if (string.IsNullOrEmpty(path))
throw new ArgumentNullException("path");
if (encoding == null)
throw new ArgumentNullException("encoding");
string xml = File.ReadAllText(path, encoding);
return XmlDeserialize<T>(xml, encoding);
}
}
}输出内容
DllName : CalcSample.dll
NameSpaceName ; CalcSample
ClassName : Calc
MethodName : Add
Parameters[0] : 1
Parameters[1] : 2
生成 XML 文件的内容
xml
<?xml version="1.0" encoding="utf-8"?>
<ArrayOfDllConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<DllConfig>
<DllName>CalcSample.dll</DllName>
<NameSpaceName>CalcSample</NameSpaceName>
<ClassName>Calc</ClassName>
<MethodName>Add</MethodName>
<Parameters>
<string>1</string>
<string>2</string>
</Parameters>
</DllConfig>
</ArrayOfDllConfig>