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BinaryFormatter

Book类
using System;
using System.Collections;
using System.Text;

namespace SerializableTest
{
    [Serializable]
    public class Book
    {
        public Book()
        {
            alBookReader = new ArrayList();
        }

        public string strBookName;

        [NonSerialized]
        public string strBookPwd;

        private string _bookID;
        public string BookID
        {
            get { return _bookID; }
            set { _bookID = value; }
        }

        public ArrayList alBookReader;

        private string _bookPrice;
        public void SetBookPrice(string price)
        {
            _bookPrice = price;
        }

        public void Write()
        {
            Console.WriteLine("Book ID:" + BookID);
            Console.WriteLine("Book Name:" + strBookName);
            Console.WriteLine("Book Password:" + strBookPwd);
            Console.WriteLine("Book Price:" + _bookPrice);
            Console.WriteLine("Book Reader:");
            for (int i = 0; i < alBookReader.Count; i++)
            {
                Console.WriteLine(alBookReader[i]);
            }
        }
    }
}
这个类比较简单,就是定义了一些public字段和一个可读写的属性,一个private字段,一个标记为[NonSerialized]的字段,具体会在下面的例子中体现出来

一、BinaryFormatter序列化方式
1、序列化,就是给Book类赋值,然后进行序列化到一个文件中
            Book book = new Book();
            book.BookID = "1";
            book.alBookReader.Add("gspring");
            book.alBookReader.Add("永春");
            book.strBookName = "C#强化";
            book.strBookPwd = "*****";
            book.SetBookPrice("50.00");
            BinarySerialize serialize = new BinarySerialize();
            serialize.Serialize(book);2、反序列化
            BinarySerialize serialize = new BinarySerialize();
            Book book = serialize.DeSerialize();
            book.Write();3、测试用的
BinarySerialize类
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;

namespace SerializableTest
{
    public class BinarySerialize
    {
        string strFile = "c:\\book.data";

        public void Serialize(Book book)
        {
            using (FileStream fs = new FileStream(strFile, FileMode.Create))
            {
                BinaryFormatter formatter = new BinaryFormatter();
                formatter.Serialize(fs, book);
            }
        }

        public Book DeSerialize()
        {
            Book book;
            using (FileStream fs = new FileStream(strFile, FileMode.Open))
            {
                BinaryFormatter formatter = new BinaryFormatter();
                book = (Book)formatter.Deserialize(fs);
            }
            return book;
        }
    }
}
主要就是调用System.Runtime.Serialization.Formatters.Binary空间下的BinaryFormatter类进行序列化和反序列化,以缩略型二进制格式写到一个文件中去,速度比较快,而且写入后的文件已二进制保存有一定的保密效果。
调用反序列化后的截图如下:

也就是说除了标记为NonSerialized的其他所有成员都能序列化

二、SoapFormatter序列化方式
调用序列化和反序列化的方法和上面比较类似,我就不列出来了,主要就看看SoapSerialize类
SoapSerialize类
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Runtime.Serialization.Formatters.Soap;

namespace SerializableTest
{
    public class SoapSerialize
    {
        string strFile = "c:\\book.soap";

        public void Serialize(Book book)
        {
            using (FileStream fs = new FileStream(strFile, FileMode.Create))
            {
                SoapFormatter formatter = new SoapFormatter();
                formatter.Serialize(fs, book);
            }
        }

        public Book DeSerialize()
        {
            Book book;
            using (FileStream fs = new FileStream(strFile, FileMode.Open))
            {
                SoapFormatter formatter = new SoapFormatter();
                book = (Book)formatter.Deserialize(fs);
            }
            return book;
        }
    }
}
主要就是调用System.Runtime.Serialization.Formatters.Soap空间下的SoapFormatter类进行序列化和反序列化,使用之前需要应用System.Runtime.Serialization.Formatters.Soap.dll(.net自带的)
序列化之后的文件是Soap格式的文件(简单对象访问协议(Simple Object Access Protocol,SOAP),是一种轻量的、简单的、基于XML的协议,它被设计成在WEB上交换结构化的和固化的信息。 SOAP 可以和现存的许多因特网协议和格式结合使用,包括超文本传输协议(HTTP),简单邮件传输协议(SMTP),多用途网际邮件扩充协议(MIME)。它还支持从消息系统到远程过程调用(RPC)等大量的应用程序。SOAP使用基于XML的数据结构和超文本传输协议(HTTP)的组合定义了一个标准的方法来使用Internet上各种不同操作环境中的分布式对象。)
调用反序列化之后的结果和方法一相同

XML序列化方式
调用序列化和反序列化的方法和上面比较类似,我就不列出来了,主要就看看XmlSerialize类
XmlSerialize类
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Xml.Serialization;

namespace SerializableTest
{
    public class XmlSerialize
    {
        string strFile = "c:\\book.xml";

        public void Serialize(Book book)
        {
            using (FileStream fs = new FileStream(strFile, FileMode.Create))
            {
                XmlSerializer formatter = new XmlSerializer(typeof(Book));
                formatter.Serialize(fs, book);
            }
        }

        public Book DeSerialize()
        {
            Book book;
            using (FileStream fs = new FileStream(strFile, FileMode.Open))
            {
                XmlSerializer formatter = new XmlSerializer(typeof(Book));
                book = (Book)formatter.Deserialize(fs);
            }
            return book;
        }
    }
}
从这三个测试类我们可以看出来其实三种方法的调用方式都差不多,只是具体使用的类不同
xml序列化之后的文件就是一般的一个xml文件:
book.xml
<?xml version="1.0"?>
<Book xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<strBookName>C#强化</strBookName>
<strBookPwd>*****</strBookPwd>
<alBookReader>
    <anyType xsi:type="xsd:string">gspring</anyType>
    <anyType xsi:type="xsd:string">永春</anyType>
</alBookReader>
<BookID>1</BookID>
</Book>输出截图如下:

也就是说采用xml序列化的方式只能保存public的字段和可读写的属性,对于private等类型的字段不能进行序列化

关于循环引用:
比如在上面的例子Book类中加入如下一个属性:
        public Book relationBook;
在调用序列化时使用如下方法:
            Book book = new Book();
            book.BookID = "1";
            book.alBookReader.Add("gspring");
            book.alBookReader.Add("永春");
            book.strBookName = "C#强化";
            book.strBookPwd = "*****";
            book.SetBookPrice("50.00");

            Book book2 = new Book();
            book2.BookID = "2";
            book2.alBookReader.Add("gspring");
            book2.alBookReader.Add("永春");
            book2.strBookName = ".NET强化";
            book2.strBookPwd = "*****";
            book2.SetBookPrice("40.00");

            book.relationBook = book2;
            book2.relationBook = book;
            BinarySerialize serialize = new BinarySerialize();
            serialize.Serialize(book);这样就会出现循环引用的情况,对于BinarySerialize和SoapSerialize可以正常序列化(.NET内部进行处理了),对于XmlSerialize出现这种情况会报错:"序列化类型 SerializableTest.Book 的对象时检测到循环引用。"



posted on 2011-06-28 11:17  李sir  阅读(442)  评论(0编辑  收藏  举报