添加项目文件。

common/Tnb.Common/Security/JsonHelper.cs

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+using JNPF.JsonSerialization;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+
+namespace JNPF.Common.Security;
+
+/// <summary>
+/// JsonHelper
+/// 版 本：V3.4.2
+/// 版 权：拓通智联科技有限公司（http://www.tuotong-tech.com）
+/// 作 者：JNPF开发平台组.
+/// </summary>
+public static class JsonHelper
+{
+    /// <summary>
+    /// 序列化提供器.
+    /// </summary>
+    public static IJsonSerializerProvider _jsonSerializer = App.GetService(typeof(NewtonsoftJsonSerializerProvider), App.RootServices) as IJsonSerializerProvider;
+
+    /// <summary>
+    /// Object 转 JSON字符串.
+    /// </summary>
+    /// <param name="obj"></param>
+    /// <returns></returns>
+    public static string ToJsonString(this object obj)
+    {
+        return obj == null ? string.Empty : _jsonSerializer.Serialize(obj);
+    }
+
+    /// <summary>
+    /// Object 转 JSON字符串.
+    /// </summary>
+    /// <param name="obj"></param>
+    /// <param name="jsonSerializerOptions">序列化规则.</param>
+    /// <returns></returns>
+    public static string ToJsonString(this object obj, object jsonSerializerOptions = default)
+    {
+        return obj == null ? string.Empty : _jsonSerializer.Serialize(obj, jsonSerializerOptions);
+    }
+
+    /// <summary>
+    /// JSON 字符串转 Object.
+    /// </summary>
+    /// <typeparam name="T">动态类型.</typeparam>
+    /// <param name="json">对象.</param>
+    /// <returns></returns>
+    public static T ToObject<T>(this string json)
+    {
+        return _ = _jsonSerializer.Deserialize<T>(json) ?? default(T);
+    }
+
+    /// <summary>
+    /// JSON 字符串转 Object.
+    /// </summary>
+    /// <typeparam name="T">动态类型.</typeparam>
+    /// <param name="json">对象.</param>
+    /// <param name="jsonSerializerOptions">序列化规则.</param>
+    /// <returns></returns>
+    public static T ToObject<T>(this string json, object jsonSerializerOptions = default)
+    {
+        return _ = _jsonSerializer.Deserialize<T>(json, jsonSerializerOptions) ?? default(T);
+    }
+
+    /// <summary>
+    /// Object 转 对象.
+    /// </summary>
+    /// <typeparam name="T">动态类型.</typeparam>
+    /// <param name="json"></param>
+    /// <returns></returns>
+    public static T ToObject<T>(this object json)
+    {
+        return _ = ToJsonString(json).ToObject<T>() ?? default(T);
+    }
+
+    /// <summary>
+    /// Object 转 对象.
+    /// </summary>
+    /// <typeparam name="T">动态类型.</typeparam>
+    /// <param name="json"></param>
+    /// <param name="jsonSerializerOptions">序列化规则.</param>
+    /// <returns></returns>
+    public static T ToObject<T>(this object json, object jsonSerializerOptions = default)
+    {
+        return _ = ToJsonString(json, jsonSerializerOptions).ToObject<T>(jsonSerializerOptions) ?? default(T);
+    }
+
+    /// <summary>
+    /// 字符串转动态类型List.
+    /// </summary>
+    /// <typeparam name="T">动态类型.</typeparam>
+    /// <param name="json"></param>
+    /// <returns></returns>
+    public static List<T> ToList<T>(this string json)
+    {
+        return _ = _jsonSerializer.Deserialize<List<T>>(json) ?? null;
+    }
+
+    /// <summary>
+    /// 字符串转动态类型List.
+    /// </summary>
+    /// <typeparam name="T">动态类型.</typeparam>
+    /// <param name="json"></param>
+    /// <param name="jsonSerializerOptions">序列化规则.</param>
+    /// <returns></returns>
+    public static List<T> ToList<T>(this string json, object jsonSerializerOptions = default)
+    {
+        return _ = _jsonSerializer.Deserialize<List<T>>(json, jsonSerializerOptions) ?? null;
+    }
+
+    /// <summary>
+    /// 字符串 转 JObject.
+    /// </summary>
+    /// <param name="json">字符串.</param>
+    /// <returns></returns>
+    public static JObject ToObject(this string json)
+    {
+        return json == null ? JObject.Parse("{}") : JObject.Parse(json.Replace("&nbsp;", string.Empty));
+    }
+
+    /// <summary>
+    /// 字符串 转 JSON.
+    /// </summary>
+    /// <param name="json">字符串.</param>
+    /// <returns></returns>
+    public static string PraseToJson(string json)
+    {
+        JsonSerializer s = new JsonSerializer();
+        JsonReader reader = new JsonTextReader(new StringReader(json));
+        object jsonObject = s.Deserialize(reader);
+        StringWriter sWriter = new StringWriter();
+        JsonWriter writer = new JsonTextWriter(sWriter);
+        writer.Formatting = Formatting.Indented;
+        s.Serialize(writer, jsonObject);
+        return sWriter.ToString();
+    }
+}