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  • C# 序列化、反序列化 Serialize

    C# 序列化、反序列化 Serialize


    二进制序列化:对象序列化之后是二进制形式的,通过BinaryFormatter类来实现的,这个类位于System.Runtime.Serialization.Formatters.Binary命名空间下。

    SOAP序列化:对象序列化之后的结果符合SOAP协议,也就是可以通过SOAP 协议传输,通过System.Runtime.Serialization.Formatters.Soap命名空间下的SoapFormatter类来实现的。

    XML序列化:对象序列化之后的结果是XML形式的,通过XmlSerializer 类来实现的,这个类位于System.Xml.Serialization命名空间下。XML序列化不能序列化私有数据。

    二进制序列化

    我们先创建一个Student类,并为它添加上Serializable特性,如果没有添加是不能进行序列化操作的。

        [Serializable]
        public class Student
        {
            public string Name { get; set; }
            public int Age { get; set; }
            public string Email { get; set; }
    
            public Student(string name, int age, string email)
            {
                this.Name = name;
                this.Age = age;
                this.Email = email;
            }
        }
    

    再创建一个List对象,用于存放Student对象

        List<Student> students = new List<Student>();
        students.Add(new Student("Oliver", 18, "123@qq.com"));
        students.Add(new Student("小白", 19, "123@sina.com"));
        students.Add(new Student("老K", 28, "123@163.com"));
        students.Add(new Student("土豆", 16, "232@sina.com"));
        students.Add(new Student("番茄", 33, "fanqie@qq.com"));
        students.Add(new Student("小红", 22, "24424@163.com"));
        students.Add(new Student("黎明", 18, "2232@126.com"));
        students.Add(new Student("黄昏", 21, "huanghun@qq.com"));
    

    使用BinaryFormatter 序列化反序列化

        string directoryPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Serialize");
        if (!System.IO.Directory.Exists(directoryPath))
        {
            Directory.CreateDirectory(directoryPath);
        }
    
        {
            string fileName = Path.Combine(directoryPath, "BinaryFormatter.txt");
            //序列化
            using (Stream stream = new FileStream(fileName, FileMode.Create, FileAccess.ReadWrite))
            {
                BinaryFormatter binaryFormatter = new BinaryFormatter();
                binaryFormatter.Serialize(stream, students);
            }
    
            //反序列化
            using (Stream stream = new FileStream(fileName, FileMode.Open, FileAccess.ReadWrite))
            {
                BinaryFormatter binaryFormatter = new BinaryFormatter();
                stream.Position = 0;//重置流位置
                var newList = (List<Student>)binaryFormatter.Deserialize(stream);
            }
        }
    

    SOAP序列化

        string fileName = Path.Combine(directoryPath, "SoapFormatter.txt");
        using (Stream stream = new FileStream(fileName, FileMode.Create, FileAccess.ReadWrite))
        {
            SoapFormatter soapFormatter = new SoapFormatter();
            soapFormatter.Serialize(stream, students.ToArray());//注意,这儿不能传递泛型对象,否则会出错
            
            //如确实需要传递泛型对象,请使用下面方式传递StudentList:
            //[serializble] 
            //public class StudentList : List <Student>
        }
    
        using (Stream stream = new FileStream(fileName, FileMode.Open, FileAccess.ReadWrite))
        {
            SoapFormatter soapFormatter = new SoapFormatter();
            var newList = ((Student[])soapFormatter.Deserialize(stream)).ToList();
        }
    
    

    XML序列化

    注意:XmlFormatter序列化要求类必须有无参数构造函数,而且各属性必须既能读又能写,即必须同时定义getter和setter,若只定义getter,则反序列化后的得到的各个属性的值都为null。

    
        //序列化
        string fileName = Path.Combine(directoryPath, "XmlSerializer.txt");
        using (Stream stream = new FileStream(fileName, FileMode.Create, FileAccess.ReadWrite))
        {
            XmlSerializer xmlSerializer = new XmlSerializer(typeof(List<Student>));//创建XML序列化器,需要指定对象的类型
            xmlSerializer.Serialize(stream, students);
    
        }
    
        //反序列化
        using (Stream stream = new FileStream(fileName, FileMode.Open, FileAccess.ReadWrite))
        {
            XmlSerializer xmlSerializer = new XmlSerializer(typeof(List<Student>));
            stream.Position = 0;//重置流位置
            var newList = (List<Student>)xmlSerializer.Deserialize(stream);
        }
    

    JSON序列化

    Json序列化反序列化推荐使用Newtonsoft.Json.dll,它比原生态的Json序列化效率还高,而且使用还很方便。

        //使用Newtonsoft序列化
        string jsonStr = Newtonsoft.Json.JsonConvert.SerializeObject(students);
        //反序列化
        var newList = Newtonsoft.Json.JsonConvert.DeserializeObject<List<Student>>(jsonStr);
    
    
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  • 原文地址:https://www.cnblogs.com/haowuji/p/9481189.html
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