地图实体使用的JavaScriptSerializer JSON来 [英] Map entity to JSON using JavaScriptSerializer

问题描述

我的实体是这样的：

class Address
{
     public string Number { get; set; }
     public string Street { get; set; }
     public string City { get; set; }
     public string Country { get; set; }
}

class Person
{
     public string Name { get; set; }
     public int Age { get; set; }
     public Address PostalAddress { get; set; }
}

Person newPerson = 
    new Person()
    {
       Name = "Kushan",
       Age = 25,
       PostalAddress = 
           new Address()
           {
               Number = "No 25",
               Street = "Main Street",
               City = "Matale",
               Country = "Sri Lanka"
           }
    };

现在我想这个newPerson对象映射到JSON对象这样的，

Now I wanna map this newPerson object into JSON object like this,

{ 
     "PER_NAME" : "Kushan",
     "PER_AGE" : "25",
     "PER_ADDRESS" : {
                          "ADD_NUMBER" : "No 25",
                          "ADD_STREET" : "Main Street",
                          "ADD_CITY" : "Matale",
                          "ADD_COUNTRY" : "Sri Lanka"
                     }
}

注：以上仅仅是一个例子。

Note: Above is just an example.

我需要的是，我需要在自定义序列化时间的关键。默认情况下，它正在采取属性名作为重点。我不能改变属性名称。如何做到这一点？

What I need is, I need to customize the Key at the serializing time. by default it is taking property name as the key. I can't change property names. How to do this?

此外，是有可能改变以JSON OBJ出现键 - 值对的顺序。

Also, is it possible to change to order of appearing key-value pairs in JSON obj.?

推荐答案

您需要添加 DataContract 属性类和数据成员的属性。设置名称 DataMemeber 属性自定义属性名称的属性和订单属性来定义的顺序。

You need to add DataContract attributes to your classes and DataMember to the properties. Set Name property of DataMemeber attribute to your custom property name and Order property to define the order.

[DataContract]
public class Person
{
    [DataMember(Name = "PER_NAME", Order = 1)]
    public string Name { get; set; }

    [DataMember(Name = "PER_AGE", Order = 2)]
    public int Age { get; set; }

    [DataMember(Name = "PER_ADDRESS", Order = 3)]
    public Address PostalAddress { get; set; }
}

然后，你可以这样做：

Then you can do this:

var newPerson = new Person()
{
    Name = "Kushan",
    Age = 25,
    PostalAddress = new Address()
    {
        Number = "No 25",
        Street = "Main Street",
        City = "Matale",
        Country = "Sri Lanka"
    }
};

MemoryStream stream = new MemoryStream();
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(Person));
ser.WriteObject(stream, newPerson);

要检查结果是：

var result = Encoding.ASCII.GetString(stream.ToArray());

{"PER_NAME":"Kushan","PER_AGE":25,"PER_ADDRESS":{"ADD_NUMBER":"No 25","ADD_STREET":"Main Street","ADD_CITY":"Matale","ADD_COUNTRY":"Sri Lanka"}}

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