C# 将对象序列化为字符串
我使用以下方法将对象保存到文件：C# 将对象序列化为字符串,c#,string,serialization,xml-serialization,C#,String,Serialization,Xml Serialization,我使用以下方法将对象保存到文件： // Save an object out to the disk public static void SerializeObject<T>(this T toSerialize, String filename) { XmlSerializer xmlSerializer = new XmlSerializer(toSerialize.GetType()); TextWriter textWriter = new StreamWr
// Save an object out to the disk
public static void SerializeObject<T>(this T toSerialize, String filename)
{
XmlSerializer xmlSerializer = new XmlSerializer(toSerialize.GetType());
TextWriter textWriter = new StreamWriter(filename);
xmlSerializer.Serialize(textWriter, toSerialize);
textWriter.Close();
}
//将对象保存到磁盘
公共静态void serialize对象（此T-toSerialize，字符串文件名）
{
XmlSerializer XmlSerializer=新的XmlSerializer（toSerialize.GetType（））；
TextWriter TextWriter=新的StreamWriter（文件名）；
序列化（textWriter，toSerialize）；
textWriter.Close（）；
}
公共静态字符串序列化对象（此T序列化）
{
XmlSerializer XmlSerializer=新的XmlSerializer（toSerialize.GetType（））；
使用（StringWriter textWriter=new StringWriter（））
{
序列化（textWriter，toSerialize）；
返回textWriter.ToString（）；
}
}
toSerialize.GetType（）typeof（T）TTtypeof（T）XmlSerializer异常，因为您将派生类型的实例传递给调用派生类型基类中定义的SerializeObject的方法：
此外，Ideone使用单声道执行代码；使用Microsoft.NET运行时会出现的实际异常
与Ideone上显示的消息不同，但失败的原因相同。代码安全注意事项
关于，在XmlSerializer
构造函数中使用toSerialize.GetType（）
而不是typeof（T）
是很重要的：如果使用第一个构造函数，代码将覆盖所有可能的场景，而使用后一个构造函数有时会失败
下面是一些示例代码的链接，这些代码激发了这条语句，当使用typeof（T）
时，XmlSerializer
抛出异常，因为您将派生类型的实例传递给调用派生类型基类中定义的SerializeObject（）
的方法。请注意，Ideone使用Mono来执行代码：使用Microsoft.NET运行时会得到的实际异常与Ideone上显示的消息不同，但它同样失败
为了完整起见，我将完整的代码示例发布在此处以供将来参考，以防将来无法使用Ideone（我发布代码的地方）：
using System;
using System.Xml.Serialization;
using System.IO;
public class Test
{
public static void Main()
{
Sub subInstance = new Sub();
Console.WriteLine(subInstance.TestMethod());
}
public class Super
{
public string TestMethod() {
return this.SerializeObject();
}
}
public class Sub : Super
{
}
}
public static class TestExt {
public static string SerializeObject<T>(this T toSerialize)
{
Console.WriteLine(typeof(T).Name); // PRINTS: "Super", the base/superclass -- Expected output is "Sub" instead
Console.WriteLine(toSerialize.GetType().Name); // PRINTS: "Sub", the derived/subclass
XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));
StringWriter textWriter = new StringWriter();
// And now...this will throw and Exception!
// Changing new XmlSerializer(typeof(T)) to new XmlSerializer(subInstance.GetType());
// solves the problem
xmlSerializer.Serialize(textWriter, toSerialize);
return textWriter.ToString();
}
}
使用系统；
使用System.Xml.Serialization；
使用System.IO；
公开课考试
{
公共静态void Main（）
{
Sub subInstance=new Sub（）；
WriteLine（subInstance.TestMethod（））；
}
公共级超级
{
公共字符串TestMethod（）{
返回此.SerializeObject（）；
}
}
公开课分组：超级
{
}
}
公共静态类TestExt{
公共静态字符串序列化对象（此T-toSerialize）
{
Console.WriteLine（typeof（T.Name）；//打印：“Super”，基/超类——预期输出为“Sub”
Console.WriteLine（toSerialize.GetType（）.Name）；//打印：“Sub”，派生的/子类
XmlSerializer XmlSerializer=新的XmlSerializer（typeof（T））；
StringWriter textWriter=新StringWriter（）；
//现在…这将抛出异常！
//将新的XmlSerializer（typeof（T））更改为新的XmlSerializer（subInstance.GetType（））；
//解决问题
序列化（textWriter，toSerialize）；
返回textWriter.ToString（）；
}
}
我知道这不是问题的真正答案，但根据问题的投票数和接受的答案，我怀疑人们实际上是在使用代码将对象序列化为字符串
使用XML序列化将不必要的额外文本垃圾添加到输出中
下节课
public class UserData
{
public int UserId { get; set; }
}
它产生
<?xml version="1.0" encoding="utf-16"?>
<UserData xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<UserId>0</UserId>
</UserData>
要反序列化对象，请执行以下操作：
var userData = new UserData {UserId = 0};
var userDataString = JsonConvert.SerializeObject(userData);
var userData = JsonConvert.DeserializeObject<UserData>(userDataString);
序列化和反序列化（XML/JSON）：
public static T xml反序列化（此字符串要进行序列化）
{
XmlSerializer XmlSerializer=新的XmlSerializer（typeof（T））；
使用（StringReader文本阅读器=新的StringReader（进行序列化））
{
返回（T）xmlSerializer.Deserialize（textReader）；
}
}
公共静态字符串XmlSerialize（此T-toSerialize）
{
XmlSerializer XmlSerializer=新的XmlSerializer（typeof（T））；
使用（StringWriter textWriter=new StringWriter（））
{
序列化（textWriter，toSerialize）；
返回textWriter.ToString（）；
}
}
公共静态T JsonDeserialize（此字符串用于序列化）
{
返回JsonConvert.DeserializeObject（toDeserialize）；
}
公共静态字符串JsonSerialize（此T-toSerialize）
{
返回JsonConvert.SerializeObject（toSerialize）；
}
我的2p
string Serialise<T>(T serialisableObject)
{
var xmlSerializer = new XmlSerializer(serialisableObject.GetType());
using (var ms = new MemoryStream())
{
using (var xw = XmlWriter.Create(ms,
new XmlWriterSettings()
{
Encoding = new UTF8Encoding(false),
Indent = true,
NewLineOnAttributes = true,
}))
{
xmlSerializer.Serialize(xw,serialisableObject);
return Encoding.UTF8.GetString(ms.ToArray());
}
}
}
string序列化（T serialisableObject）
{
var xmlSerializer=新的xmlSerializer（serialisableObject.GetType（））；
使用（var ms=new MemoryStream（））
{
使用（var xw=XmlWriter.Create）（ms，
新的XmlWriterSettings（）
{
编码=新的UTF8编码（错误），
缩进=真，
NewLineOnAttributes=true，
}))
{
Serialize（xw，serialisableObject）；
重新
{"UserId":0}
public static T XmlDeserialize<T>(this string toDeserialize)
{
XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));
using(StringReader textReader = new StringReader(toDeserialize))
{
return (T)xmlSerializer.Deserialize(textReader);
}
}
public static string XmlSerialize<T>(this T toSerialize)
{
XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));
using(StringWriter textWriter = new StringWriter())
{
xmlSerializer.Serialize(textWriter, toSerialize);
return textWriter.ToString();
}
}
public static T JsonDeserialize<T>(this string toDeserialize)
{
return JsonConvert.DeserializeObject<T>(toDeserialize);
}
public static string JsonSerialize<T>(this T toSerialize)
{
return JsonConvert.SerializeObject(toSerialize);
}
string Serialise<T>(T serialisableObject)
{
var xmlSerializer = new XmlSerializer(serialisableObject.GetType());
using (var ms = new MemoryStream())
{
using (var xw = XmlWriter.Create(ms,
new XmlWriterSettings()
{
Encoding = new UTF8Encoding(false),
Indent = true,
NewLineOnAttributes = true,
}))
{
xmlSerializer.Serialize(xw,serialisableObject);
return Encoding.UTF8.GetString(ms.ToArray());
}
}
}
JavaScriptSerializer js = new JavaScriptSerializer();
string jsonstring = js.Serialize(yourClassObject);
public string name {get;set;}
public int age {get;set;}
Person(string serializedPerson)
{
string[] tmpArray = serializedPerson.Split('\n');
if(tmpArray.Length>2 && tmpArray[0].Equals("#")){
this.name=tmpArray[1];
this.age=int.TryParse(tmpArray[2]);
}else{
throw new ArgumentException("Not a valid serialization of a person");
}
}
public string SerializeToString()
{
return "#\n" +
name + "\n" +
age;
}
public static string SerializeObject<T>(T objectToSerialize)
{
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter bf = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
MemoryStream memStr = new MemoryStream();
try
{
bf.Serialize(memStr, objectToSerialize);
memStr.Position = 0;
return Convert.ToBase64String(memStr.ToArray());
}
finally
{
memStr.Close();
}
}
public static T DerializeObject<T>(string objectToDerialize)
{
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter bf = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
byte[] byteArray = Convert.FromBase64String(objectToDerialize);
MemoryStream memStr = new MemoryStream(byteArray);
try
{
return (T)bf.Deserialize(memStr);
}
finally
{
memStr.Close();
}
}
Public Function XmlSerializeObject(ByVal obj As Object) As String
Dim xmlStr As String = String.Empty
Dim settings As New XmlWriterSettings()
settings.Indent = False
settings.OmitXmlDeclaration = True
settings.NewLineChars = String.Empty
settings.NewLineHandling = NewLineHandling.None
Using stringWriter As New StringWriter()
Using xmlWriter__1 As XmlWriter = XmlWriter.Create(stringWriter, settings)
Dim serializer As New XmlSerializer(obj.[GetType]())
serializer.Serialize(xmlWriter__1, obj)
xmlStr = stringWriter.ToString()
xmlWriter__1.Close()
End Using
stringWriter.Close()
End Using
Return xmlStr.ToString
End Function
Public Function XmlDeserializeObject(ByVal data As [String], ByVal objType As Type) As Object
Dim xmlSer As New System.Xml.Serialization.XmlSerializer(objType)
Dim reader As TextReader = New StringReader(data)
Dim obj As New Object
obj = DirectCast(xmlSer.Deserialize(reader), Object)
Return obj
End Function
public string XmlSerializeObject(object obj)
{
string xmlStr = String.Empty;
XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = false;
settings.OmitXmlDeclaration = true;
settings.NewLineChars = String.Empty;
settings.NewLineHandling = NewLineHandling.None;
using (StringWriter stringWriter = new StringWriter())
{
using (XmlWriter xmlWriter = XmlWriter.Create(stringWriter, settings))
{
XmlSerializer serializer = new XmlSerializer( obj.GetType());
serializer.Serialize(xmlWriter, obj);
xmlStr = stringWriter.ToString();
xmlWriter.Close();
}
}
return xmlStr.ToString();
}
public object XmlDeserializeObject(string data, Type objType)
{
XmlSerializer xmlSer = new XmlSerializer(objType);
StringReader reader = new StringReader(data);
object obj = new object();
obj = (object)(xmlSer.Deserialize(reader));
return obj;
}
using System;
using System.Xml.Serialization;
using System.IO;
namespace ObjectSerialization
{
public static class ObjectSerialization
{
// THIS: (C): https://stackoverflow.com/questions/2434534/serialize-an-object-to-string
/// <summary>
/// A helper to serialize an object to a string containing XML data of the object.
/// </summary>
/// <typeparam name="T">An object to serialize to a XML data string.</typeparam>
/// <param name="toSerialize">A helper method for any type of object to be serialized to a XML data string.</param>
/// <returns>A string containing XML data of the object.</returns>
public static string SerializeObject<T>(this T toSerialize)
{
// create an instance of a XmlSerializer class with the typeof(T)..
XmlSerializer xmlSerializer = new XmlSerializer(toSerialize.GetType());
// using is necessary with classes which implement the IDisposable interface..
using (StringWriter stringWriter = new StringWriter())
{
// serialize a class to a StringWriter class instance..
xmlSerializer.Serialize(stringWriter, toSerialize); // a base class of the StringWriter instance is TextWriter..
return stringWriter.ToString(); // return the value..
}
}
// THIS: (C): VPKSoft, 2018, https://www.vpksoft.net
/// <summary>
/// Deserializes an object which is saved to an XML data string. If the object has no instance a new object will be constructed if possible.
/// <note type="note">An exception will occur if a null reference is called an no valid constructor of the class is available.</note>
/// </summary>
/// <typeparam name="T">An object to deserialize from a XML data string.</typeparam>
/// <param name="toDeserialize">An object of which XML data to deserialize. If the object is null a a default constructor is called.</param>
/// <param name="xmlData">A string containing a serialized XML data do deserialize.</param>
/// <returns>An object which is deserialized from the XML data string.</returns>
public static T DeserializeObject<T>(this T toDeserialize, string xmlData)
{
// if a null instance of an object called this try to create a "default" instance for it with typeof(T),
// this will throw an exception no useful constructor is found..
object voidInstance = toDeserialize == null ? Activator.CreateInstance(typeof(T)) : toDeserialize;
// create an instance of a XmlSerializer class with the typeof(T)..
XmlSerializer xmlSerializer = new XmlSerializer(voidInstance.GetType());
// construct a StringReader class instance of the given xmlData parameter to be deserialized by the XmlSerializer class instance..
using (StringReader stringReader = new StringReader(xmlData))
{
// return the "new" object deserialized via the XmlSerializer class instance..
return (T)xmlSerializer.Deserialize(stringReader);
}
}
// THIS: (C): VPKSoft, 2018, https://www.vpksoft.net
/// <summary>
/// Deserializes an object which is saved to an XML data string.
/// </summary>
/// <param name="toDeserialize">A type of an object of which XML data to deserialize.</param>
/// <param name="xmlData">A string containing a serialized XML data do deserialize.</param>
/// <returns>An object which is deserialized from the XML data string.</returns>
public static object DeserializeObject(Type toDeserialize, string xmlData)
{
// create an instance of a XmlSerializer class with the given type toDeserialize..
XmlSerializer xmlSerializer = new XmlSerializer(toDeserialize);
// construct a StringReader class instance of the given xmlData parameter to be deserialized by the XmlSerializer class instance..
using (StringReader stringReader = new StringReader(xmlData))
{
// return the "new" object deserialized via the XmlSerializer class instance..
return xmlSerializer.Deserialize(stringReader);
}
}
}
}