.NET模型序列化json数据[转]

转换采用微软.net类库中的 JavaScriptSerializer 类来完成。

序列号所用数据模型定义
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public class Study
{
    public string Name { get; set; }
    public int Age { get; set; }
}

将后台模型转换成json字符串的方法有以下几种：

1、直接将数据序列化为json字符串
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Study study = new Study() { Name = "你好", Age = 22 };

JavaScriptSerializer serialize = new JavaScriptSerializer();
string result = serialize.Serialize(study);

结果：{"Name":"你好","Age":22}

2、采用匿名对象自定义数据对象的序列化
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Study study = new Study() { Name = "你好", Age = 22 };

        JavaScriptSerializer serialize = new JavaScriptSerializer();
        string result = serialize.Serialize(new { N = study.Name, A = study.Age });

结果:{"N":"你好","A":22}

3、继承JavaScriptConverter类，实现自定义数据对象的序列化
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using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Web.Script.Serialization;
public class StudyJsonConverter : JavaScriptConverter
{
    public override object Deserialize(IDictionary<string, object> dictionary, Type type,
        JavaScriptSerializer serializer)
    {
        if (dictionary == null)
            return null;
        if (type == typeof(Study))
        {
            Study result = new Study();
            result.Name = dictionary["N"] as string;
            result.Age = Convert.ToInt32(dictionary["A"]);
            return result;
        }
        return null;
    }

    public override IDictionary<string, object> Serialize(object obj, JavaScriptSerializer serializer)
    {
        Study study = obj as Study;
        Dictionary<string, object> result = new Dictionary<string, object>();
        if (study != null)
        {
            result.Add("N", study.Name);
            result.Add("A", study.Age);
        }
        return result;
    }

    public override IEnumerable<Type> SupportedTypes
    {
        get { return new ReadOnlyCollection<Type>(new List<Type>() { typeof(Study) }); }
    }
}

序列化对象
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Study study = new Study() { Name = "你好", Age = 22 };

JavaScriptSerializer serialize = new JavaScriptSerializer();
serialize.RegisterConverters(new List<JavaScriptConverter>() { new StudyJsonConverter() });
string result = serialize.Serialize(study);

结果：{"N":"你好","A":22}

几种结果的比较

第一种序列化的方法最简单，却有问题最大。当后太数据模型发生变化时，就会影响到前台的JavaScript脚本，前台和后台的的连接过于紧密。并且不能对数据模型的属进行压缩。

第二种和第三种可对数据模型的属性进行压缩，并且后台模型发生改变，也不会影响到前台的JavaScript脚本。在应用时根据情况来采用采用不同的方法。