將父級和子級類與子方法一起使用的設計模式是什么？

Question

當我想建立一個父子關系類時，我已經多次面對這個問題。
我有一個基本的AuthenticateRequest類。 就我而言，我有2個子請求，但它們對GetContent()有自己的邏輯。
它並沒有真正落入“ 復合模式”或“ Liskov替換”中，因為基本方法是唯一且被調用的。
我應該使用哪種設計模式？

public class AuthenticateRequest
{
    public string Url { get; set; }

    public string ContentType { get; set; }

    public string Method { get; set; }

    public virtual HttpContent GetContent()
    {
        return new StringContent("");
    }
} 

public class SoapAuthenticateRequest : AuthenticateRequest
{
    public string SoapMethodName { get; set; }

    public string SoapAction { get; set; }

    public string KeyForUserNameParameter { get; set; }

    public string ValueForUserNameParameter { get; set; }

    public string KeyForPasswordParameter { get; set; }

    public string ValueForPasswordParameter { get; set; }

    public override HttpContent GetContent()
    {
        var methodName = this.SoapMethodName;
        var keyUsername = this.KeyForUserNameParameter;
        var keyPwd = this.KeyForPasswordParameter;
        var valueUsername = this.ValueForUserNameParameter;
        var valuePwd = this.ValueForPasswordParameter;
        var soapAction = this.SoapAction ?? @"http://tempuri.org/"; 

        var soap = $@"<soap:Envelope xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" xmlns:xsd=""http://www.w3.org/2001/XMLSchema"" xmlns:soap=""http://schemas.xmlsoap.org/soap/envelope/""><soap:Body><{methodName} xmlns=""{soapAction}""><{keyUsername}>{valueUsername}</{keyUsername}><{keyPwd}>{valuePwd}</{keyPwd}></{methodName}></soap:Body></soap:Envelope>";

        return new StringContent(soap, Encoding.UTF8, ContentTypes.XmlSoap);
    }
}

public class JsonAuthenticateRequest : AuthenticateRequest
{
    public string SoapMethodName { get; set; }

    public string SoapAction { get; set; }

    public Dictionary<string, string> ParameterKeyValues { get; set; }

    public override HttpContent GetContent()
    {
        var json = JsonConvert.SerializeObject(ParameterKeyValues);
        return new StringContent(json, Encoding.UTF8, ContentTypes.Json);
    }
}

public async Task<AuthenticateResponse> Authenicate(AuthenticateRequest request)
{
    var requestMsg = new HttpRequestMessage
    {
        RequestUri = new Uri(request.Url),
        Method = new HttpMethod(request.Method.ToString()),
        Content = request.GetContent(),
    };

    var responseMsg = await _httpClient.SendAsync(requestMsg).ConfigureAwait(false);
    var responseContent = await responseMsg.Content.ReadAsStringAsync().ConfigureAwait(false);

    return new AuthenticateResponse
    {
        Message = responseContent,
        IsSuccess = Regex.Match(responseContent, (string)request.RegexForValidUser).Success
    };
}

Answer 1

您看到工廠模式了嗎？

但是對於您的問題，要求類具有適當的實現。 您可以像這樣簡單地使用abstract關鍵字

public abstract class AuthenticateRequest
{    
    public abstract HttpContent GetContent();
} 

public class SoapAuthenticateRequest : AuthenticateRequest
{
    public override HttpContent GetContent()
    {
        // your logic

        return new StringContent(soap, Encoding.UTF8, ContentTypes.XmlSoap);
    }
}

public class JsonAuthenticateRequest : AuthenticateRequest
{
    public override HttpContent GetContent()
    {
        var json = JsonConvert.SerializeObject(ParameterKeyValues);
        return new StringContent(json, Encoding.UTF8, ContentTypes.Json);
    }
}