序列化是将对象状态转换为可保持或可传输的格式的过程,反序列化则过程相反。用于存储和传输数据。

(一)asp.net序列化与反序列化

.net提供多种序列化类

(1)BinaryFormatter 类

名字空间:System.Runtime.Serialization.Formatters.Binary

这个类用于以二进制格式将对象或整个连接对象图形序列化和反序列化

构造器两个:

BinaryFormatter()BinaryFormatter(ISurrogateSelector, StreamingContext)

 

介绍它的两个主要方法:

1 Serialize方法

将对象或连接对象图形序列化为给定流

它有两个重载:

Serialize(Stream, Object)Serialize(Stream, Object,Header[])

 

类Customer

public   class  Customer
{
     public   int  Unid {  get ;  set ; }
     public   string  Name {  get ;  set ; }
     public   string  Call {  get ;  set ; }
}

 

下边通过示例来测试序列化方法Serialize

public   void  TestSerialize()
{
    Customer customer  =   new  Customer {Unid = 1 ,Name = " 宋江 " ,Call = " 89589689 "  };
    FileStream fs  =   new  FileStream( " test.dat " , FileMode.Create); 

    BinaryFormatter formatter  =   new  BinaryFormatter();
     try    {
        formatter.Serialize(fs, customer);
    }
     catch    { }
     finally    {
        fs.Close();
    }
}

 

测试时,这个会抛出异常:类型“SerializeTest.Customer”未标记为可序列化。所以要在Customer类上添加修饰标签

[Serializable]public   class  Customer

 

测试,在bin\debug文件夹中可以看到test.dat文件。

2 Deserialize方法

将流反序列化为对象图形,它也有两个重载

Deserialize(Stream) 
Deserialize(Stream, HeaderHandler)

 

通过示例来测试从流进行反序列化

public   void  TestDeserialize()
{

    Customer customer  =   new  Customer();
    FileStream fs  =   new  FileStream( " test.dat " , FileMode.Open);

    BinaryFormatter formatter  =   new  BinaryFormatter();
    customer =  formatter.Deserialize(fs)  as  Customer;
    fs.Close();

    Console.WriteLine(customer.Name);
}

 

结果输出:宋江

(2)SoapFormatter类

名字空间:System.Runtime.Serialization.Formatters.Soap

以 SOAP 格式将对象或整个连接对象的图形序列化和反序列化。

SOAP就是simple object access protocol的缩写,简单对象传输协议。是一种轻量的,简单的,基于xml的协议。

这个要添加对System.Runtime.Serialization.Formatters.Soap.dll的引用

构造器:

SoapFormatter xx = new   SoapFormatter()
SoapFormatter(ISurrogateSelector, StreamingContext)

 

主要介绍其中2个方法

1 Serialize方法

Serialize(Stream, Object) 
Serialize(Stream, Object, Header[]

 

public   void  TestSoapSerialize()
{
    Customer customer  =   new  Customer { Unid  =   1 , Name  =   " 宋江 " , Call  =   " 89589689 "  };

    FileStream fs  =   new  FileStream( " soaptest.dat " , FileMode.Create);
    SoapFormatter formatter  =   new  SoapFormatter();
     try    {
        formatter.Serialize(fs, customer);
    }
     catch    { }
     finally    {
        fs.Close();
    }
}

 

打开bin\debug中的soaptest.dat文件,这就是soap格式。

2 Deserialize方法

反序列化soap格式

Deserialize(Stream) Deserialize(Stream, HeaderHandler)

 

其它的不多说了。

public   void  TestSoapDeserialize()
{
    Customer customer  =   new  Customer();
    FileStream fs  =   new  FileStream( " soaptest.dat " , FileMode.Open);
    SoapFormatter formatter  =   new  SoapFormatter();
    customer  =  formatter.Deserialize(fs)  as  Customer;
    fs.Close();

    Console.WriteLine(customer.Name);
}

 

(3)XmlSerializer类

将对象序列化到 XML 文档中和从 XML 文档中反序列化对象

名字空间:System.Xml.Serialization

构造方法太多,不列举了,可以参考帮助

1 Serialize方法

拿出一个来说:

public   void  Serialize(XmlWriter xmlWriter,Object o)
 

public   void  TestXmlSerialize()
{
    Customer customer  =   new  Customer { Unid  =   1 , Name  =   " 宋江 " , Call  =   " 89589689 "  };

    FileStream fs  =   new  FileStream( " xmltest.xml " , FileMode.Create);
    XmlSerializer formatter  =   new  XmlSerializer( typeof (Customer));
    formatter.Serialize(fs, customer);

    fs.Close();
}

 

结果可以到debug\bin里查看。

2 Deserialize方法

public   void  TestXmlDeserialize()
{
    Customer customer  =   new  Customer();
    FileStream fs  =   new  FileStream( " xmltest.xml " , FileMode.Open);
    XmlSerializer formatter  =   new  XmlSerializer( typeof (Customer));
    customer  =  formatter.Deserialize(fs)  as  Customer;
    fs.Close();

    Console.WriteLine(customer.Name);
}

(二)Json序列化与反序列化

 

Json序列化和反序列化指的是:对象序列化为JSON,并可用于从 JSON 反序列化对象

在.net 3.5中

名字空间:System.Runtime.Serialization.Json

但程序集是: System.ServiceModel.Web.dll

 

(1)DataContractJsonSerializer类

构造方法很多。

介绍这个类其中2个方法:

1 WriteObject方法

有好种重载,这里测试一个:

public   override   void  WriteObject(Stream stream,Object graph)

 

测试:

public   void  TestJsonSerialize()
{

    Customer customer  =   new  Customer { Unid  =   1 , Name  =   " 宋江 " , Call  =   " 89589689 "  };
    DataContractJsonSerializer ds  =   new  DataContractJsonSerializer( typeof (Customer)); 

    FileStream fs  =   new  FileStream( " json.txt " , FileMode.Create);
    ds.WriteObject(fs, customer);
    fs.Close();
}

 

进行Json序列化时,类型不必添加修饰标签

在bin\debug里可以看到json串。

 

2 ReadObject方法

重载很多。

public   override  Object ReadObject(Stream stream)

测试:

public   void  TestJsonDeserialize()
{
    DataContractJsonSerializer ds  =  
         new  DataContractJsonSerializer( typeof (Customer)); 

    FileStream fs  =   new  FileStream( " json.txt " , FileMode.Open);
    var cc  =  ds.ReadObject(fs);
    fs.Close();
}

(2)JavaScriptSerializer类

为启用 AFAX 的应用程序提供序列化和反序列化功能

名字空间:System.Web.Script.Serialization

程序集:System.Web.Extensions(在 System.Web.Extensions.dll 中)

说其中2个方法

1 Serialize方法

 

Serialize(Object)
Serialize(Object, StringBuilder)

public   void  TestJsSerialize()
{
    Customer customer  =   new  Customer { Unid  =   1 , Name  =   " 宋江 " , Call  =   " 89589689 "  };
    JavaScriptSerializer js  =   new  JavaScriptSerializer(); 

    Console.WriteLine(js.Serialize(customer));
}

 

输出串:{"Unid":1,"Name":"宋江","Call":"89589689"}

2 Deserialize方法

public   void  TestJsDeserialize()
{
     string  str  =  File.ReadAllText( " jsjson.txt " );
    JavaScriptSerializer js  =   new  JavaScriptSerializer();
    Customer customer  =  js.Deserialize < Customer > (str); 

    Console.WriteLine(customer.Name);
}

 

(3)Json.net

这是一个第三方工具

 

名字空间:Newtonsoft.Json

添加Newtonsoft.Json.dll程序集

 

其中2个方法:

 

1 SerializeObject方法

public   void  TestJsonnetSerialize()
{
    Customer customer  =   new  Customer { Unid  =   1 , Name  =   " 宋江 " , Call  =   " 89589689 "  };
     string  strJson = JsonConvert.SerializeObject(customer);
    StreamWriter sw  =  File.CreateText( " jsonnet.txt " );
    sw.Write(strJson);

    sw.Close();
}

 

2 DeserializeObject方法

public   void  TestJsonnetDeserialize()
{
     string  str  =  File.ReadAllText( " jsonnet.txt " );
    Customer customer  =  JsonConvert.DeserializeObject < Customer > (str);
    Console.WriteLine(customer.Name);
}