.Net(C#) Newtonsoft.Json(Json.NET)Json字符串转成的对象方法以及Guid类型问题

1、安装引用Newtonsoft.Json(Json.NET)

1）使用Nuget安装

解决方案资源管理器 =》项目名字上右键 =》点击“管理Nuget程序包” =》搜索“Newtonsoft.Json” =》点击安装

2）直接下载指定版本

下载地址：https://github.com/JamesNK/Newtonsoft.Json/releases

2、Newtonsoft.Json(Json.NET)使用代码 

相关文档：https://www.newtonsoft.com/json/help/html/SerializeObject.htm

public class Account{    public string Email { get; set; }    public bool Active { get; set; }    public DateTime CreatedDate { get; set; }    public IList Roles { get; set; }}

1）对象转成Json字符 

Account account = new Account{    Email = "james@example.com",    Active = true,    CreatedDate = new DateTime(2013, 1, 20, 0, 0, 0, DateTimeKind.Utc),    Roles = new List    {        "User",        "Admin"     }}; string json = JsonConvert.SerializeObject(account, Formatting.Indented); // {//   "Email": "james@example.com",//   "Active": true,//   "CreatedDate": "2013-01-20T00:00:00Z",//   "Roles": [//     "User",//     "Admin"//   ]// } Console.WriteLine(json);

2）Json字符串转成对象

string json = @"{  'Email': 'james@example.com',  'Active': true,  'CreatedDate': '2013-01-20T00:00:00Z',  'Roles': [    'User',    'Admin'  ]}";Account account = JsonConvert.DeserializeObject(json);Console.WriteLine(account.Email); // james@example.com

3、反序列化成有Guid类型字段的对象解决方法

示例字符串

 [{
        "CustID": "f3b6.....0768bec",
        "Title": "Timesheet",
        "CalendarID": "AAMkADE5ZDViNmIyLWU3N2.....pVolcdmAABY3IuJAAA=",
        "PartitionKey": "Project",
        "RowKey": "94a6.....29a4f34",
        "Timestamp": "2018-09-02T11:24:57.1838388+03:00",
        "ETag": "W/\"datetime'2018-09-02T08%3A24%3A57.1838388Z'\""
    }, {
        "CustID": "5479b.....176643c",
        "Title": "Galaxy",
        "CalendarID": "AAMkADE5Z.......boA_pVolcdmAABZ8biCAAA=",
        "PartitionKey": "Project",
        "RowKey": "f5cc....86a4b",
        "Timestamp": "2018-09-03T13:02:27.642082+03:00",
        "ETag": "W/\"datetime'2018-09-03T10%3A02%3A27.642082Z'\""
    }]

示例Project类

public class Project : TableEntity
    {
        public Project() { }
        public Project(string rKey, string pKey = "Project")
        {
            this.PartitionKey = pKey;
            this.RowKey = rKey;
        }
        public Guid CustID { get; set; }
        public string Title { get; set; }
        public string CalendarID { get; set; }
    }

1）使用JsonConverter把反序列化中string转换为Guid类型

public class GuidJsonConverter : JsonConverter
{
    public override void WriteJson(JsonWriter writer, Guid value, JsonSerializer serializer)
    {
        writer.WriteValue(value.ToString());
    }
    public override Guid ReadJson(JsonReader reader, Type objectType, Guid existingValue, bool hasExistingValue, JsonSerializer serializer)
    {
        string s = (string)reader.Value;
        return new Guid(s);
    }
}

2）JsonConverter使用方法

对应字段上添加JsonConverter标签

[JsonConverter(typeof(GuidJsonConverter))]
public Guid CustID { get; set; }