init commit

src/SKIT.FlurlHttpClient.Wechat/Serialization/FlurlSystemTextJsonSerializer.cs

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+using System;
+using System.IO;
+using System.Text.Encodings.Web;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using Flurl.Http.Configuration;
+
+namespace SKIT.FlurlHttpClient.Wechat
+{
+    public class FlurlSystemTextJsonSerializer : ISerializer
+    {
+        private readonly JsonSerializerOptions _options;
+
+        public FlurlSystemTextJsonSerializer()
+            : this(GetDefaultSerializerOptions())
+        {
+        }
+
+        public FlurlSystemTextJsonSerializer(JsonSerializerOptions options)
+        {
+            if (options == null) throw new ArgumentNullException(nameof(options));
+
+            _options = options;
+        }
+
+        public static JsonSerializerOptions GetDefaultSerializerOptions()
+        {
+            var jsonOptions = new JsonSerializerOptions();
+            jsonOptions.Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping;
+            jsonOptions.NumberHandling = JsonNumberHandling.AllowReadingFromString;
+            jsonOptions.IgnoreNullValues = true;
+            jsonOptions.WriteIndented = false;
+            jsonOptions.PropertyNamingPolicy = null;
+            jsonOptions.PropertyNameCaseInsensitive = true;
+            return jsonOptions;
+        }
+
+        public T Deserialize<T>(string json)
+        {
+            return JsonSerializer.Deserialize<T>(json, _options)!;
+        }
+
+        T ISerializer.Deserialize<T>(Stream stream)
+        {
+            if (stream.CanSeek)
+            {
+                stream.Seek(0, SeekOrigin.Begin);
+            }
+
+            using (var reader = new StreamReader(stream))
+            {
+                string json = reader.ReadToEnd();
+                return Deserialize<T>(json);
+            }
+        }
+
+        public object Deserialize(string json, Type type)
+        {
+            return JsonSerializer.Deserialize(json, type, _options)!;
+        }
+
+        public string Serialize<T>(T obj)
+        {
+            return JsonSerializer.Serialize(obj, _options);
+        }
+
+        public string Serialize(object obj)
+        {
+            return JsonSerializer.Serialize(obj, _options);
+        }
+
+        public string Serialize(object obj, Type type)
+        {
+            return JsonSerializer.Serialize(obj, type, _options);
+        }
+    }
+}