Question

我有以下JSON，其中某些属性具有空字符串，即“”或空值

{  
   "allOrNone":false,
   "records":[  
  {  
     "Address__c":"Street",
     "ConsentToComm__c":"",
     "EmailCLDate__c":"",
     "attributes":{  
        "type":"Stage_FF_Hot_Alerts__c"
     }
  }
 ]
}

我必须从此JSON中删除空字符串和空值属性。我如何删除它们。我在C＃中执行此操作。删除空字符串后所需的JSON和null将为：

{  
   "allOrNone":false,
   "records":[  
  {  
     "Address__c":"Street",
     "attributes":{  
        "type":"Stage_FF_Hot_Alerts__c"
     }
  }
 ]
}

Answer 1

我已经解决了这个问题。我已在序列化过程中删除了空值。

string JSONstring = JsonConvert.SerializeObject(dt, new 
JsonSerializerSettings()
{
            NullValueHandling = NullValueHandling.Ignore,
});

然后通过以下代码删除空字符串值

var temp = JArray.Parse(JSONstring);
temp.Descendants()
    .OfType<JProperty>()
    .Where(attr => attr.Value.ToString() == "")
    .ToList() // you should call ToList because you're about to changing the result, which is not possible if it is IEnumerable
    .ForEach(attr => attr.Remove()); // removing unwanted attributes

JSONstring = temp.ToString();

Answer 2

这可能有帮助

namespace JSON
{
    using System;
    using System.Collections.Generic;

    using System.Globalization;
    using Newtonsoft.Json;
    using Newtonsoft.Json.Converters;

    public partial class Root
    {
        [DefaultValue("")]
        [JsonProperty("allOrNone")]
        public bool AllOrNone { get; set; }

        [DefaultValue("")]
        [JsonProperty("records")]
        public Record[] Records { get; set; }
    }

    public partial class Record
    {
        [DefaultValue("")]
        [JsonProperty("Address__c")]
        public string AddressC { get; set; }

        [DefaultValue("")]
        [JsonProperty("ConsentToComm__c")]
        public string ConsentToCommC { get; set; }

        [DefaultValue("")]
        [JsonProperty("EmailCLDate__c")]
        public string EmailClDateC { get; set; }

        [DefaultValue("")]
        [JsonProperty("attributes")]
        public Attributes Attributes { get; set; }
    }

    public partial class Attributes
    {
        [DefaultValue("")]
        [JsonProperty("type")]
        public string Type { get; set; }
    }

    public partial class Root
    {
        public static Root FromJson(string json) => JsonConvert.DeserializeObject<Root>(json, QuickType.Converter.Settings);
    }

    public static class Serialize
    {
        public static string ToJson(this Root self) => JsonConvert.SerializeObject(self, QuickType.Converter.Settings);
    }

    internal static class Converter
    {
        public static readonly JsonSerializerSettings Settings = new JsonSerializerSettings
        {
            NullValueHandling = NullValueHandling.Ignore,
            ContractResolver = ShouldSerializeContractResolver.Instance,
            MetadataPropertyHandling = MetadataPropertyHandling.Ignore,
            DateParseHandling = DateParseHandling.None,
            Converters = {
                new IsoDateTimeConverter { DateTimeStyles = DateTimeStyles.AssumeUniversal }
            },
        };
    }
}

从JSON中删除具有空字符串值的属性

2 个答案: