將 JSON 請求轉換為 C# object 並以不同的 Z0ECD11C1D7A287401D148A23BBD 格式發送回響應

Question

我正在調用網絡服務並關注 Json 請求

{"handler":{"name":"abc"},"intent":{"name":"actions.intent.MAIN","params":{},"query":"Mit Google sprechen"},"scene":{"name":"actions.scene.START_CONVERSATION","slotFillingStatus":"UNSPECIFIED","slots":{},"next":{"name":"Start_Frage"}},"session":{"id":"ABwppHHVumDrliLJaLSikS6KnIlN7yYv6Z4XJCOYzEZt8Fr08RH6r0wtM2-E0v40lS2p1YosTDfpSCd5Lw","params":{},"typeOverrides":[],"languageCode":""},"user":{"locale":"de-DE","params":{},"accountLinkingStatus":"ACCOUNT_LINKING_STATUS_UNSPECIFIED","verificationStatus":"VERIFIED","packageEntitlements":[],"gaiamint":"","permissions":[],"lastSeenTime":"2021-04-01T10:06:59Z"},"home":{"params":{}},"device":{"capabilities":["SPEECH","RICH_RESPONSE","LONG_FORM_AUDIO"]}}

我使用https://json2csharp.com/將我的 Json 字符串轉換為 C# 類

 public class Handler
    {
        public string name { get; set; }
    }

    public class Params
    {
    }

    public class Intent
    {
        public string name { get; set; }
        public Params @params { get; set; }
        public string query { get; set; }
    }

    public class Slots
    {
    }

    public class Next
    {
        public string name { get; set; }
    }

    public class Scene
    {
        public string name { get; set; }
        public string slotFillingStatus { get; set; }
        public Slots slots { get; set; }
        public Next next { get; set; }
    }

    public class Session
    {
        public string id { get; set; }
        public Params @params { get; set; }
        public List<object> typeOverrides { get; set; }
        public string languageCode { get; set; }
    }

    public class User
    {
        public string locale { get; set; }
        public Params @params { get; set; }
        public string accountLinkingStatus { get; set; }
        public string verificationStatus { get; set; }
        public List<object> packageEntitlements { get; set; }
        public string gaiamint { get; set; }
        public List<object> permissions { get; set; }
        public DateTime lastSeenTime { get; set; }
    }

    public class Home
    {
        public Params @params { get; set; }
    }

    public class Device
    {
        public List<string> capabilities { get; set; }
    }

    public class RequestJson
    {
        public Handler handler { get; set; }
        public Intent intent { get; set; }
        public Scene scene { get; set; }
        public Session session { get; set; }
        public User user { get; set; }
        public Home home { get; set; }
        public Device device { get; set; }
    }

我需要發回以這種方式格式化的 JSON 響應

{"responseJson": {"session": {"id": "ABwppHF4mhTR8RAjnFSt7me_NFR1hRKHY5N6X0kfONIcz_VVPUOmR8VddWVJ3GM3G8ix3OR3O1Ew2wbldc5cRziYebVA","params": {},"languageCode": ""},"prompt": {"override": false,"firstSimple": {"speech": "Stellen Sie eine Frage","text": ""}}}}

https://json2csharp.com/導致這個 object 結構

 public class Params { } public class Session { public string id { get; set; } public Params @params { get; set; } public string languageCode { get; set; } } public class FirstSimple { public string speech { get; set; } public string text { get; set; } } public class Prompt { public bool @override { get; set; } public FirstSimple firstSimple { get; set; } } public class ResponseJson { public Session session { get; set; } public Prompt prompt { get; set; } } }

我當前的代碼如下所示：如果我這樣做，我會得到一個 nullreferenceexception。 我無法在 RespondJson object 中設置任何值。 我是編程新手。 我將非常感謝您的幫助

[HttpPost]
public async Task<IActionResult> PostWebHook([FromBody] RequestJson request)
{

    ResponseJson response = new ResponseJson();
    string body;
    using (var reader = new StreamReader(Request.Body))
    {
        body = await reader.ReadToEndAsync();
        // => doesnt work that way I get a nullreferenceexception
        response.session.id = request.session.id; //nullreferenceexception
        response.prompt.@override = false;
        response.prompt.firstSimple.speech = "Test123";
        //
      
    }

    return Ok(response);
}

}

我該怎么做？ 簡而言之：我收到 JSON 格式的請求，但稍后我需要以另一種 JSON 格式發回響應。

Answer 1

最好的方法是有兩個獨立的模型。 一個預請求，每個響應第二個。 當然，您可以在兩個模型中重用一些類。 In your json you can reuse the session object and then you have to create new class which will be represent prompt object. 您的響應 object 示例：

  public class Params
    {
    }

    public class Session
    {
        [JsonPropertyName("id")]
        public string Id { get; set; }

        [JsonPropertyName("params")]
        public Params Params { get; set; }

        [JsonPropertyName("languageCode")]
        public string LanguageCode { get; set; }
    }

    public class FirstSimple
    {
        [JsonPropertyName("speech")]
        public string Speech { get; set; }

        [JsonPropertyName("text")]
        public string Text { get; set; }
    }

    public class Prompt
    {
        [JsonPropertyName("override")]
        public bool Override { get; set; }

        [JsonPropertyName("firstSimple")]
        public FirstSimple FirstSimple { get; set; }
    }

    public class ResponseJson
    {
        [JsonPropertyName("session")]
        public Session Session { get; set; }

        [JsonPropertyName("prompt")]
        public Prompt Prompt { get; set; }
    }

    public class Response
    {
        [JsonPropertyName("responseJson")]
        public ResponseJson ResponseJson { get; set; }
    }