序列化和反序列化

serialize（序列化）和deserialize（反序列化）

常用的两种序列化方法二进制和xml

BinaryFormatter

代码示例

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 
 7 namespace TestSerializable
 8 {
 9     [Serializable]
10     public class Person
11     {
12         public string name;
13 
14         public int age;
15 
16         [NonSerialized]
17         public string sex;
18 
19         public void SayHi()
20         {
21             Console.WriteLine("我叫{0}，今年{1}岁，我是{2}",this.name,this.age,this.sex);
22         }
23         
24     }
25 }
View Code
 1 using System;
 2 using System.Collections.Generic;
 3 using System.IO;
 4 using System.Linq;
 5 using System.Runtime.Serialization.Formatters.Binary;
 6 using System.Text;
 7 using System.Threading.Tasks;
 8 
 9 namespace TestSerializable
10 {
11     class Program
12     {
13         static void Main(string[] args)
14         {
15             //序列化
16             Person person = new Person();
17             person.age = 18;
18             person.name = "Jack";
19             person.sex = "man";
20 
21             FileStream stream = new FileStream(@"c:\temp\Person.txt", FileMode.Create);
22             BinaryFormatter bform = new BinaryFormatter();
23             bform.Serialize(stream, person);
24             stream.Close();
25 
26             //反序列化
27             FileStream destream = new FileStream(@"c:\temp\Person.txt", FileMode.Open, FileAccess.Read);
28             var p = (Person)bform.Deserialize(destream);
29             destream.Close();
30             p.SayHi();
31             Console.ReadKey();            
32         }
33     }
34 }
View Code

二进制序列化需引用System.Runtime.Serialization.Formatters.Binary

类被标注[Serializable],无需序列化的成员可用[NonSerialized]

序列化步骤：

1 创建对象及字段赋值

2 创建读写流

3 创建二进制对象

4 调用Serialize方法序列化对象

5 关闭读写流

 

反序列化步骤:

1 创建读写流

2 创建二进制对象

3 调用Deserialize反序列化

4 调用对象的字段等

5 关闭读写流

 

输出结果

注意 调用[NonSerialized]标记的成员，为默认值，比如string类型默认为null

 

XML

代码示例

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 
 7 namespace TestSerializable
 8 {
 9     public class Person
10     {
11         public string name;
12 
13         public int age;
14 
15         private string sex;
16 
17         public Person()
18         {
19 
20         }
21         public Person(string isex)
22         {
23             this.sex = isex;
24         }
25        public void SayHi()
26         {
27             Console.WriteLine("我叫{0}，今年{1}岁，我是{2}",this.name,this.age,this.sex);
28         }
29         
30     }
31 }
View Code
 1 using System;
 2 using System.Collections.Generic;
 3 using System.IO;
 4 using System.Linq;
 5 using System.Text;
 6 using System.Threading.Tasks;
 7 using System.Xml.Serialization;
 8 
 9 namespace TestSerializable
10 {
11     class Program
12     {
13         static void Main(string[] args)
14         {
15             //序列化
16             Person person = new Person("man");
17             person.age = 18;
18             person.name = "Jack";
19 
20             FileStream stream = new FileStream(@"c:\temp\Person.xml", FileMode.Create);
21             XmlSerializer xs = new XmlSerializer(typeof(Person));
22             xs.Serialize(stream, person);
23             stream.Close();
24 
25             //反序列化
26             FileStream destream = new FileStream(@"c:\temp\Person.xml", FileMode.Open, FileAccess.Read);
27             var p = (Person)xs.Deserialize(destream);
28             destream.Close();
29             p.SayHi();
30             Console.ReadKey();            
31         }
32     }
33 }
View Code

xml序列化需引用System.Xml.Serialization 无需标记，非public的成员无法序列化

 

输出结果

总结：

1 序列化和反序列化适用于保存对象的当前状态

2 序列化可用于分布式系统中传输数据

posted @ 2021-01-16 16:38  htiu  阅读(130)  评论(0)  编辑  收藏  举报