.NET 6-更换Json物业套管

Question

如何在不执行模型绑定的情况下更改json 的属性名的大小写？JsonElement序列化忽略了PropertyNaming JsonSerializer选项，这里也证实了这一点:建议使用JsonNode/JsonObject会导致相同的行为。

有什么暗示我能做到的吗？

举个例子，我想改变这一点：

{
    "MyPoperty" : 5,
    "MyComplexProperty" : {
        "MyOtherProperty": "value",
        "MyThirdProperty": true
    }
}

对此：

{
    "myPoperty" : 5,
    "myComplexProperty" : {
        "myOtherProperty": "value",
        "myThirdProperty": true
    }
}

干杯。

Answer 1

我想你试着用Newtonsoft json

class Person
{
    public string UserName { get; set; }
    public int Age { get; set; }
}

编码

static void Main(string[] args)
{
    Person person = new Person();
    person.UserName = "Bob";
    person.Age = 20;

    var serializerSettings = new JsonSerializerSettings();
    serializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
    var json = JsonConvert.SerializeObject(person, serializerSettings);
    Console.WriteLine(json);
}

输出

{"userName":"Bob","age":20}

Answer 2

不依赖于Newtonsoft json，而是依赖于多层对象。

var json = @"{""ShouldWindUpAsCamelCase"":""does it?""}";
var obj = JsonSerializer.Deserialize<Dictionary<string,string>>(json);
var dic = new Dictionary<string, string>();
foreach (var item in obj)
{
    dic.Add(item.Key.FirstCharToLower(), item.Value);
}
var serialized = System.Text.Json.JsonSerializer.Serialize(dic);
Console.WriteLine(serialized);

FirstCharToLower()函数

 public static string FirstCharToLower(this string input)
        {
            if (String.IsNullOrEmpty(input))
                return input;
            string str = input.First().ToString().ToLower() + input.Substring(1);
            return str;
        }

#输出

{"shouldWindUpAsCamelCase":"does it?"}