比较两个json对象并返回另一个仅包含c#更改的JSON对象

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Reflection;

public class JsonComparer
{
    public static string CompareJson(string json1, string json2)
    {
        // 解析JSON为C#对象
        var obj1 = JsonConvert.DeserializeObject<JObject>(json1);
        var obj2 = JsonConvert.DeserializeObject<JObject>(json2);

        // 比较两个C#对象的属性值
        var diffObj = new JObject();
        CompareProperties(obj1, obj2, diffObj);

        // 将新的C#对象转换为JSON字符串
        var diffJson = JsonConvert.SerializeObject(diffObj);

        return diffJson;
    }

    private static void CompareProperties(JObject obj1, JObject obj2, JObject diffObj)
    {
        foreach (var property in obj1.Properties())
        {
            var propName = property.Name;
            var propValue1 = property.Value;
            var propValue2 = obj2[propName];

            if (propValue2 == null)
            {
                // obj2中不存在该属性，将该属性添加到diffObj中
                diffObj[propName] = propValue1;
            }
            else if (!JToken.DeepEquals(propValue1, propValue2))
            {
                // obj2中存在该属性，但属性值不同，将该属性添加到diffObj中
                if (propValue1.Type == JTokenType.Object && propValue2.Type == JTokenType.Object)
                {
                    // 递归比较嵌套的对象属性
                    var nestedDiffObj = new JObject();
                    CompareProperties((JObject)propValue1, (JObject)propValue2, nestedDiffObj);
                    if (nestedDiffObj.HasValues)
                    {
                        diffObj[propName] = nestedDiffObj;
                    }
                }
                else
                {
                    diffObj[propName] = propValue1;
                }
            }
        }
    }
}

public class Program
{
    public static void Main(string[] args)
    {
        string json1 = "{\"name\":\"John\",\"age\":30,\"city\":\"New York\"}";
        string json2 = "{\"name\":\"John\",\"age\":35,\"city\":\"New York\"}";

        string diffJson = JsonComparer.CompareJson(json1, json2);
        Console.WriteLine(diffJson);
    }
}