在 Newtonsoft.Json中可使用例如
.AddJsonOptions(options => { options.SerializerSettings.DateFormatString = "yyyy-MM-dd HH:mm:ss"; })
方式設置接收/序列化時間格式,但在.net core 3.1中System.Text.Json是沒有自帶方式進行轉換,這就須要自定義Converter實現時間轉換
官方GitHub地址
git
public class DateTimeJsonConverter : JsonConverter<DateTime> { private readonly string _dateFormatString; public DateTimeJsonConverter() { _dateFormatString = "yyyy-MM-dd HH:mm:ss"; } public DateTimeJsonConverter(string dateFormatString) { _dateFormatString = dateFormatString; } public override DateTime Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) { return DateTime.Parse(reader.GetString()); } public override void Write(Utf8JsonWriter writer, DateTime value, JsonSerializerOptions options) { writer.WriteStringValue(value.ToUniversalTime().ToString(_dateFormatString)); } }
/// <summary>Defines the various JSON tokens that make up a JSON text.</summary> public enum JsonTokenType : byte { /// <summary>There is no value (as distinct from <see cref="F:System.Text.Json.JsonTokenType.Null" />).</summary> None, /// <summary>The token type is the start of a JSON object.</summary> StartObject, /// <summary>The token type is the end of a JSON object.</summary> EndObject, /// <summary>The token type is the start of a JSON array.</summary> StartArray, /// <summary>The token type is the end of a JSON array.</summary> EndArray, /// <summary>The token type is a JSON property name.</summary> PropertyName, /// <summary>The token type is a comment string.</summary> Comment, /// <summary>The token type is a JSON string.</summary> String, /// <summary>The token type is a JSON number.</summary> Number, /// <summary>The token type is the JSON literal true.</summary> True, /// <summary>The token type is the JSON literal false.</summary> False, /// <summary>The token type is the JSON literal null.</summary> Null, }
services //全局配置Json序列化處理 .AddJsonOptions(options => { //忽略循環引用 options.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore; //不使用駝峯樣式的key options.SerializerSettings.ContractResolver = new DefaultContractResolver(); //設置時間格式 options.SerializerSettings.DateFormatString = "yyyy-MM-dd HH:mm:ss"; })
services.AddControllers() .AddJsonOptions(options => { //設置時間格式 options.JsonSerializerOptions.Converters.Add(new DateTimeJsonConverter("yyyy-MM-dd HH:mm:ss")); //設置bool獲取格式 options.JsonSerializerOptions.Converters.Add(new BoolJsonConverter()); //不使用駝峯樣式的key options.JsonSerializerOptions.PropertyNamingPolicy = null; //不使用駝峯樣式的key options.JsonSerializerOptions.DictionaryKeyPolicy = null; //獲取或設置要在轉義字符串時使用的編碼器 options.JsonSerializerOptions.Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping; });
.netcore 3.1中接收的json中不能將 "true"/"false"
識別爲boolean的True/False,這也須要自定義Converter實現bool轉換github
namespace Kdniao.Core.Utility { public class BoolJsonConverter : JsonConverter<bool> { public override bool Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) { if (reader.TokenType == JsonTokenType.True || reader.TokenType == JsonTokenType.False) return reader.GetBoolean(); return bool.Parse(reader.GetString()); } public override void Write(Utf8JsonWriter writer, bool value, JsonSerializerOptions options) { writer.WriteBooleanValue(value); } } }