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将JSON字符串转换为“复杂”类?

json .net c#

Delta76 · 技术社区 · 14 年前

我有一个JSON字符串:

 {
"success":true,"user_id":"309","id":"309","sessId":false,"email":null,"name":"Mai Van Quan","username":"quanmv","role":"Reseller Admin","messages":"","org_name":null,"microPayNumber":"4949","microPayWord":"neocam","mobile":null,"permissions":{"ADD_CAMERA":true,
    "REMOVE_CAMERA":true,
    "EDIT_CAM_GENERAL":true,
    "ACCESS_CAM_TECHNICAL":true,
    "EDIT_CAM_PKG":true,
    "PREVIEW_CAM":true
    },"type":"sp","time":1279702793,"reseller":1,"status":"ok"}

我想用JSON.NET把它转换成一个C对象。NET可以将其转换为“泛型”对象,但我想将其转换为更具体的对象。我创建了这个类:

internal class User
    {

        public User(User u)
        {
            status = u.status;
            id = u.id;
            sessId = u.sessId;
            email = u.email;
            username = u.username;
            role = u.role;
            messages = u.messages;
            org_name = u.org_name;
            microPayNumber = u.microPayNumber;
            microPayWorld = u.microPayWorld;
            mobile = u.mobile;
            permissions = u.permissions;
            type = u.type;
            time = u.time;
            reseller = u.reseller;
            status = u.status;
        }

        public bool successs { private set; get; }


        public string user_id { private set; get; }
        public string id { private set; get; }



        public string name { private set; get; }
        public bool sessId { private set; get; }
        public string email { private set; get; }

        public string username { private set; get; }

        public string role { private set; get; }
        public string messages { private set; get; }
        public string org_name{ private set; get; }
        public string microPayNumber { private set; get; }
        public string microPayWorld { private set; get; }
        public string mobile { private set; get; }
        public Dictionary<string,bool> permissions { private set; get; }
        public string type { private set; get; }

        public int time { private set; get; }

        public int reseller { private set; get; }
        public string status { private set; get; }

}

编辑:例如:

var ob = JsonConvert.DeserializeObject<User>(str);

异常:异常已由调用的目标引发。

如何有效地将此字符串转换为对象,因为需要转换的字符串类型不止一种。

谢谢你

2 回复 | 直到 14 年前

Samuel Meacham 14 年前

一些小事情,我有你的代码运行良好。

第一件事:你得到了一个NullReferenceException。这个 permissions 你的财产 User 类从未实例化。Json.NET不会为您创建它。我将此默认构造函数添加到 用户 班级:

public User()
{
    permissions = new Dictionary<string, bool>();
}

private 或 internal 属性的设置器班级。一旦我把它们改成 public

更新

还有一个发现。如果你给你的带a的班级 [JsonObject] 属性,并使用 [JsonProperty] 属性,则您可以将setters保留为 私有的 内部的

Community Egal 7 年前

或许可以尝试一下WCF JSON序列化程序: http://msdn.microsoft.com/en-us/library/system.runtime.serialization.json.datacontractjsonserializer.aspx

编辑: 也看看这个 C# automatic property deserialization of JSON