dotnet json转xml格式

您可以使用XmlDocument类和Newtonsoft.Json.Linq.JObject类来实现将JSON转换为XML的过程。以下是示例代码：

using System.Xml;
using Newtonsoft.Json.Linq;

public static class JsonToXmlConverter
{
    public static string Convert(string json)
    {
        JObject jsonObj = JObject.Parse(json);
        XmlDocument xmlDoc = new XmlDocument();
        xmlDoc.LoadJson(jsonObj);
        return xmlDoc.InnerXml;
    }

    private static void LoadJson(this XmlDocument xmlDoc, JToken token)
    {
        if (token == null)
           return;

        switch (token.Type)
        {
            case JTokenType.Object:
                XmlElement objElement = xmlDoc.CreateElement(token.Path.Split('.').Last());
                xmlDoc.DocumentElement?.AppendChild(objElement);
                foreach (JProperty property in token.Children<JProperty>())
                {
                    xmlDoc.LoadJson(property.Value);
                }
                break;
            case JTokenType.Property:
                xmlDoc.LoadJson(((JProperty)token).Value);
                break;
            case JTokenType.Array:
                XmlElement arrayElement = xmlDoc.CreateElement(token.Path.Split('.').Last());
                xmlDoc.DocumentElement?.AppendChild(arrayElement);
                foreach (JToken value in token.Children())
                {
                    xmlDoc.LoadJson(value);
                }
                break;
            case JTokenType.Integer:
            case JTokenType.Float:
            case JTokenType.String:
            case JTokenType.Boolean:
            case JTokenType.Null:
                XmlElement valueElement = xmlDoc.CreateElement(token.Path.Split('.').Last());
                valueElement.InnerText = token.ToString();
                xmlDoc.DocumentElement?.AppendChild(valueElement);
                break;
            case JTokenType.Date:
            case JTokenType.Bytes:
            case JTokenType.Guid:
            case JTokenType.Uri:
            default:
                throw new InvalidOperationException("Unsupported JSON token type: " + token.Type);
        }
    }
}

您可以使用以下代码调用转换器：

string json = "{ \"name\": \"John Smith\", \"age\": 30, \"address\": { \"street\": \"123 Main St\", \"city\": \"Anytown\", \"state\": \"NY\" }, \"isMarried\": false, \"hobbies\": [ \"reading\", \"swimming\" ] }";
string xml = JsonToXmlConverter.Convert(json);
Console.WriteLine(xml);

这将输出以下XML字符串：

<name>John Smith</name>
<age>30</age>
<address>
    <street>123 Main St</street>
    <city>Anytown</city>
    <state>NY</state>
</address>
<isMarried>false</isMarried>
<hobbies>
    <hobbies>reading</hobbies>
    <hobbies>swimming</hobbies>
</hobbies>