关于JavaScriptSerializer的一些问题

Question

1. 使用JavaScriptSerializer进行序列化时,是否可以忽略该类的某些字段？

2. 使用JavaScriptSerializer进行序列化时,我们可以更改字段的名称吗？例如,字段是字符串is_OK,但我想将它映射到isOK？

Answer 1

您可以使用[ScriptIgnore]跳过属性:

using System;
using System.Web.Script.Serialization;

public class Group
{
    // The JavaScriptSerializer ignores this field.
    [ScriptIgnore]
    public string Comment;

    // The JavaScriptSerializer serializes this field.
    public string GroupName;
}

Answer 2

对于最大的灵活性(因为你提到的名字一样),理想的是要调用RegisterConverters的上JavaScriptSerializer对象,注册一个或多个JavaScriptConverter实现(也许在一个数组或迭代器块).

然后,您可以Serialize通过向返回的字典添加键/值对来实现以任何名称添加(或不添加)和值.如果数据是双向的,您还需要匹配Deserialize,但通常(对于ajax服务器)这不是必需的.

完整示例:

using System;
using System.Collections.Generic;
using System.Web.Script.Serialization;
class Foo
{
    public string Name { get; set; }
    public bool ImAHappyCamper { get; set; }
    private class FooConverter : JavaScriptConverter
    {
        public override object Deserialize(System.Collections.Generic.IDictionary<string, object> dictionary, System.Type type, JavaScriptSerializer serializer)
        {
            throw new NotImplementedException();
        }
        public override System.Collections.Generic.IEnumerable<System.Type> SupportedTypes
        {
            get { yield return typeof(Foo); }
        }
        public override System.Collections.Generic.IDictionary<string, object> Serialize(object obj, JavaScriptSerializer serializer)
        {
            var data = new Dictionary<string, object>();
            Foo foo = (Foo)obj;
            if (foo.ImAHappyCamper) data.Add("isOk", foo.ImAHappyCamper);
            if(!string.IsNullOrEmpty(foo.Name)) data.Add("name", foo.Name);
            return data;
        }
    }
    private static JavaScriptSerializer serializer;
    public static JavaScriptSerializer Serializer {
        get {
            if(serializer == null) {
                var tmp = new JavaScriptSerializer();
                tmp.RegisterConverters(new [] {new FooConverter()});
                serializer = tmp;
            }
            return serializer;
        }
    }
}
static class Program {
    static void Main()
    {
        var obj = new Foo { ImAHappyCamper = true, Name = "Fred" };
        string s = Foo.Serializer.Serialize(obj);
    }
}