无法在 Unity 5.4 中使用 JsonUtility 反序列化 JSON。子集合始终为空

Question

模型

using System.Collections.Generic;
using UnityEngine;

[System.Serializable]
public class GetPeopleResult
{
    public List<Person> people { get; set; }
    public GetPeopleResult()
    {
       this.people = new List<People>();
    }

    public static GetPeopleResult CreateFromJSON(string jsonString)
    {
        return JsonUtility.FromJson<GetPeopleResult>(jsonString);
    }

}
[System.Serializable]
public class Person
{
    public long id { get; set; }
    public string name { get; set; }
    public string email { get; set; }
    public string displayImageUrl { get; set; }

    public Person()
    {

    }
    public static Person CreateFromJSON(string jsonString)
    {
        return JsonUtility.FromJson<Person>(jsonString);
    }
}

JSON

{
    "people":
    [{
        "id":1,"name":"John Smith",
        "email":"jsmith@acme.com",
        "displayImageUrl":"http://example.com/"
    }]
 }

代码

string json = GetPeopleJson(); //This works
GetPeopleResult result = JsonUtility.FromJson<GetPeopleResult>(json);

调用 FromJson 后，result 不为空，但 people 集合始终为空。

Answer 1

调用FromJson后，结果不是null，而是人 集合总是空的。

那是因为 Unity 不支持属性 getter 和 setter。从您要序列化的所有类中删除{ get; set; }，这应该可以修复您的空集合。

另外，this.people = new List<People>(); 应该是 this.people = new List<Person>();

[System.Serializable]
public class GetPeopleResult
{
    public List<Person> people;
    public GetPeopleResult()
    {
       this.people = new List<People>();
    }

    public static GetPeopleResult CreateFromJSON(string jsonString)
    {
        return JsonUtility.FromJson<GetPeopleResult>(jsonString);
    }

}
[System.Serializable]
public class Person
{
    public long id;
    public string name;
    public string email;
    public string displayImageUrl;

    public Person()
    {

    }
    public static Person CreateFromJSON(string jsonString)
    {
        return JsonUtility.FromJson<Person>(jsonString);
    }
}