C#【必备技能篇】序列化与反序列化(json、xml、二进制文件)
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApp6
{
class Program
{
static void Main(string[] args)
{
Book book = new Book() { ID = 101, Name = "C#程序设计", Price = 79.5f };
//序列化文件
Serializer.ObjectToFile(book, @".\");
//序列化为字符串
string result = Serializer.ObjectToString<Book>(book);
Console.WriteLine(result);//这里显示为乱码
Console.WriteLine("——————————————————");
//文件反序列化为类型
Book outBook = Serializer.FileToObject<Book>(@".\") as Book;
Console.WriteLine(outBook.ID);
Console.WriteLine(outBook.Name);
Console.WriteLine(outBook.Price);
Console.WriteLine("——————————————————");
//字符串反序列化为类型【测试失败，报异常：:“没有对象“201326592”的映射。”】
//Book outBook1 = <Book>(result);
//();
//();
//();
Console.Read();
}
}
public class Serializer
{
/// <summary>
/// 将对象序列化为字符串
/// </summary>
/// <typeparam name="T">类型</typeparam>
/// <param name="t">实例</param>
/// <returns>字符串</returns>
public static string ObjectToString<T>(T t)
{
BinaryFormatter formatter = new BinaryFormatter();
using (MemoryStream stream = new MemoryStream())
{
formatter.Serialize(stream, t);
string result = System.Text.Encoding.UTF8.GetString(stream.ToArray());
return result;
}
}
/// <summary>
/// 将对象序列化为文件
/// </summary>
/// <typeparam name="T">类型</typeparam>
/// <param name="t">实例</param>
/// <param name="path">存放路径</param>
public static void ObjectToFile<T>(T t, string path)
{
BinaryFormatter formatter = new BinaryFormatter();
using (FileStream stream = new FileStream(path, FileMode.OpenOrCreate))
{
formatter.Serialize(stream, t);
stream.Flush();
}
}
/// <summary>
/// 将字符串反序列为类型
/// </summary>
/// <typeparam name="T">类型</typeparam>
/// <param name="s">字符串</param>
/// <returns>对象</returns>
public static T StringToObject<T>(string s) where T : class
{
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(s);
BinaryFormatter formatter = new BinaryFormatter();
using (MemoryStream stream = new MemoryStream(buffer))
{
T result = formatter.Deserialize(stream) as T;//报异常：:“没有对象“201326592”的映射。”
return result;
}
}
/// <summary>
/// 将文件反序列化为对象
/// </summary>
/// <typeparam name="T">类型</typeparam>
/// <param name="path">路径</param>
/// <returns>对象</returns>
public static T FileToObject<T>(string path) where T : class
{
using (FileStream stream = new FileStream(path, FileMode.Open))
{
BinaryFormatter formatter = new BinaryFormatter();
T result = formatter.Deserialize(stream) as T;
return result;
}
}
}
}