标签：nbsp .json als jsonp anr span ref except console
服务端有个接口，返回json格式的数据，要求输出数据的字段由客户端决定。
using Newtonsoft.Json;
using System;
namespace Hitearth
{
class Hitearth
{
static void Main(string[] args)
{
var demos = new[]
{
new demo { attr1 = "11", attr2 = "12",attr3 = "13" },
new demo { attr1 = "21", attr2 = "22",attr3 = "23" },
};
var demo2 = new demo();
demo2.obj = demo2;
var demo3 = new demo { attr2 = "demo3" };
demo3.obj = new demo { attr2 = "demo3.obj", obj = new demo { attr2 = "demo3.obj.obj" } };
Console.WriteLine(JsonConvert.SerializeObject(demos)); // [{"attr1":"11","attr2":"12","attr3":"13","obj":null},{"attr1":"21","attr2":"22","attr3":"23","obj":null}]
test(demos, "attr1 attr2".Split(‘ ‘)); // [{"attr1":"11","attr2":"12"},{"attr1":"21","attr2":"22"}]
test(demos, "attr2 attr3".Split(‘ ‘)); // [{"attr2":"12","attr3":"13"},{"attr2":"22","attr3":"23"}]
test(demos, new string[] { }); // [{},{}]
test(demo2, "attr2 attr3".Split(‘ ‘)); // {"attr2":null,"attr3":null}
test(demo2, "attr2 obj".Split(‘ ‘)); // Self referencing loop detected with type ‘Hitearth.demo‘.Path ‘‘.
test(demo3, "attr2 obj".Split(‘ ‘));// {"attr2":"demo3","obj":{"attr2":"demo3.obj","obj":{"attr2":"demo3.obj.obj","obj":null}}}
}
static void test(object obj, string[] attrs)
{
try
{
Console.WriteLine(JsonConvert.SerializeObject(obj, new FilterPropertiesJsonConverter(typeof(demo), attrs)));
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
}
public class demo
{
public string attr1 { get; set; }
public string attr2 { get; set; }
public string attr3 { get; set; }
public demo obj { get; set; }
}
}
using Newtonsoft.Json; using Newtonsoft.Json.Serialization; using System; using System.Linq; namespace Hitearth { /// <summary> /// 只序列化 jsonProperties 指定的字段 /// </summary> /// <typeparam name="T"></typeparam> public class FilterPropertiesJsonConverter : JsonConverter { Type type; string[] jsonProperties; bool reversed = false; public FilterPropertiesJsonConverter(Type type, string[] jsonProperties, bool reversed = false) { if (type == null) throw new ArgumentNullException("type"); if (jsonProperties == null) throw new ArgumentNullException("jsonProperties"); this.type = type; this.jsonProperties = jsonProperties; this.reversed = reversed; } public override bool CanConvert(Type objectType) { return objectType == type; } public override bool CanRead { get { return false; } } public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer) { throw new NotImplementedException(); } public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) { if (value == null) { writer.WriteNull(); return; } var contract = serializer.ContractResolver.ResolveContract(value.GetType()) as JsonObjectContract; writer.WriteStartObject(); if (contract != null) { foreach (var item in contract.Properties) { if (jsonProperties.Contains(item.PropertyName) == reversed) continue; writer.WritePropertyName(item.PropertyName); serializer.Serialize(writer, item.ValueProvider.GetValue(value)); } } writer.WriteEndObject(); } } }
标签：nbsp .json als jsonp anr span ref except console
原文地址：https://www.cnblogs.com/hitearth/p/10323186.html
