Json.net
Json.net 效率 
Json.net 的特性 
1.net 集合
1.1 无序集合 Dictionary，Hashtable 
Hashtable ht = new Hashtable(); ht.Add("string", "Hashtable"); ht.Add("DateTime", System.DateTime.Now); ht.Add("int", 10); textBox2.Text = JsonConvert.SerializeObject(ht, Newtonsoft.Json.Formatting.Indented); Dictionary<object, object> dict = new Dictionary<object, object>(); dict.Add("string", "Dictionary"); dict.Add("DateTime", System.DateTime.Now); dict.Add("int", 10); textBox2.Text += "\r\n" + JsonConvert.SerializeObject(dict, Newtonsoft.Json.Formatting.Indented);
看下效果:
1.2 有序集合 DataTable,List,Array
DataTable dt = new DataTable(); dt.Columns.Add(new DataColumn("string",typeof(string))); dt.Columns.Add(new DataColumn("DateTime", typeof(DateTime))); dt.Columns.Add(new DataColumn("int", typeof(int))); DataRow dr = dt.NewRow(); dr[0] = "test1"; dr[1] = System.DateTime.Now; dr[2] = 10; dt.Rows.Add(dr); DataRow dr1 = dt.NewRow(); dr1[0] = "test2"; dr1[1] = System.DateTime.Now; dr1[2] = 10; dt.Rows.Add(dr1); textBox2.Text = JsonConvert.SerializeObject(dt, Newtonsoft.Json.Formatting.Indented);
看下效果:
2 JObject 对象
2.1 不用实体序列化Json 对象
JObject obj = new JObject() { {"UserName","wwwwww"}, {"Vipgrade",30}, { "TravelMoney",new JArray { "任我游", "任我住", "任我行", } } }; textBox2.Text = JsonConvert .SerializeObject(obj, Newtonsoft.Json.Formatting.Indented); JObject obj1 = new JObject(); obj1.Add("userName", JToken.FromObject("wwwwww")); obj1.Add("Vipgarde", JToken.FromObject(30)); obj1.Add("TravelMoney", JToken.FromObject( new List<KeyAndValue>(){ new KeyAndValue(){ Key="50", Value = "任我游" }, new KeyAndValue() { Key="100", Value = "任我行" } } )); textBox2.Text += "\r\n" + JsonConvert
public class KeyAndValue { [JsonProperty(PropertyName = "金额")] public string Key { get; set; } [JsonProperty(PropertyName = "名称")] public string Value { get; set; } public override string ToString() { return "(" + this.Key.ToString() + ")" + this.Value.ToString(); } }
看下效果:
2.2 Linq To Json 支持
string s = @"{ List: [ { 'Hotelid': 1, 'HotelName': '保安', 'En_HotelName': 'baoan' }, { 'Hotelid': 2, 'HotelName': '华庭宾馆', 'En_HotelName': 'huating' } ] }"; textBox1.Text = s; JObject obj = JObject.Parse(textBox1.Text); var TempInfo = from n in obj.Property("List").ToList()[0] select new { hotelid = n.SelectToken("Hotelid"), HotelName = n.SelectToken("HotelName") }; foreach (var a in TempInfo) { MessageBox.Show(((JValue)a.hotelid).Value.ToString() + a.HotelName); } textBox2.Text = JsonConvert.SerializeObject(TempInfo, Newtonsoft.Json.Formatting.Indented);
看下效果:
3 Json 动态效果
可以根据你的Value 值来进行Key值得显示。
//会员等级 public enum VipGrade { Gold = 20, Silver = 10, diamond = 30 } public class Cusomter { public Cusomter(int _ID, string _UserName, VipGrade _vipGrade,int _integral) { ID = _ID; UserName = _UserName; vipGrade = _vipGrade; integral = _integral; } /// <summary> /// ID /// </summary> public int ID { get; set; } /// <summary> /// 客户名称 /// </summary> public string UserName { get; set; } /// <summary> /// 会员等级 /// </summary> [JsonConverter(typeof(StringEnumConverter))] public VipGrade vipGrade { get; set; } /// <summary> /// 积分 /// </summary> public int integral { get; set; } }
public class HideintegralContractResolver : DefaultContractResolver { private readonly int integral; private readonly VipGrade vipgrade; public HideintegralContractResolver(VipGrade _vipgrade,int _integral) { integral = _integral; vipgrade = _vipgrade; } protected override IList<JsonProperty> CreateProperties(Type type,MemberSerialization memberSerialization) { IList<JsonProperty> list = base.CreateProperties(type, memberSerialization); list[3].ShouldSerialize = x => { Cusomter e = (Cusomter)x; if (e.integral > integral && e.vipGrade.GetHashCode() >= vipgrade.GetHashCode()) { return e.integral == e.integral; } else { return e.integral != e.integral; } }; return list; } }
List<Cusomter> list = new List<Cusomter>(); list.Add(new Cusomter(1, "张三", VipGrade.diamond, 20000)); list.Add(new Cusomter(2, "李四", VipGrade.Gold, 3000)); list.Add(new Cusomter(3, "王五", VipGrade.Silver, 4000)); textBox1.Text = JsonConvert.SerializeObject(list, Newtonsoft.Json.Formatting.Indented); var settings = new JsonSerializerSettings(); //积分担保 > 金牌用户且积分>10000的用户,序列化显示积分 settings.ContractResolver = new HideintegralContractResolver(VipGrade.Gold, 10000); textBox2.Text = JsonConvert.SerializeObject(list, Newtonsoft.Json.Formatting.Indented, settings);
看下效果:
4.异常处理
我们给Key:int_object(Int) 类型赋个String类型，一样可以序列化成功
public class JsonNetTest { public string str_object { get; set; } public DateTime dt_object { get; set; } public int int_object { get; set; } public float flt_object { get; set; } [OnDeserializing] internal void OnDeserializingMethod(StreamingContext context) { } [OnDeserialized] internal void OnDeserializedMethod(StreamingContext context) { } [OnError] internal void OnError(StreamingContext context, ErrorContext errorContext) { if (errorContext.Member.ToString().Equals("int_object")) { errorContext.Handled = true; } else { errorContext.Handled = false; } } }
JObject obj = new JObject() { {"str_object","www\'www"}, {"dt_object",DateTime.Now}, {"int_object","fsdafs"}, {"flt_object",10}, }; textBox1.Text = JsonConvert.SerializeObject(obj, Newtonsoft.Json.Formatting.Indented); JsonNetTest test = (JsonNetTest)JsonConvert.DeserializeObject<JsonNetTest>(obj.ToString()); textBox2.Text = JsonConvert.SerializeObject(test, Newtonsoft.Json.Formatting.Indented);
看下效果:
