Question

我有像这样的DTO：

public class UserPreferenceDto
{
    public long Id { get; set; }
    // other props with getter and setter

    //props WITHOUT setter, they are set in the ctor
    public string UserName { get; }
    public string ComputerName { get; }
    public string ApplicationCode { get; }
    public string ApplicationVersion { get; }
    public string PreferenceGroup { get; }

    public UserPreferenceDto(string userName, string computerName, string applicationCode, string applicationVersion, string preferenceGroup)
    {
        // Initializers of other props

        UserName = userName.ToLower();
        ComputerName = computerName.ToLower();
        ApplicationCode = applicationCode.ToLower();
        ApplicationVersion = applicationVersion.ToLower();
        PreferenceGroup = preferenceGroup.ToLower();
    }

    public string GetUrnKey()
    {
        return $"pref:{UserName}:{ComputerName}:{ApplicationCode}:{ApplicationVersion}:{PreferenceGroup}:{Id}";
    }
}

在客户端（C＃中的WPF应用程序）id上：

private void ChangeApplicationTheme()
{
    Debug.WriteLine($"Changeing application theme to {SelectedTheme}...");
    CurrentApp.SetApplicationTheme(SelectedTheme);
    var themePrefDto = new UserPreferenceDto(CurrentApp.GetCurrentUserLogonId(), System.Environment.MachineName, "AccountManagerClient", "1.0.000", "Theme");
    themePrefDto.CUser = CurrentApp.GetCurrentUserLogonId();
    themePrefDto.Preferences.Add("Theme", SelectedTheme);
    StorePreferenceItem(themePrefDto);
}

private async void StorePreferenceItem(UserPreferenceDto preferenceItem)
{
    #region Update server
    IsOperationRunning = true;
    OperationProgressText = $"Updating preferences item {preferenceItem}";
    try
    {
        var ssc = CurrentApp.ServiceClient;
        var pref = new CreateUserPreference(preferenceItem);
        await ssc.PostAsync(pref);
        //...
    }
    catch (WebServiceException we)
    {
        // ....
    }
    catch (Exception ex)
    {
        // ...
    }
    finally
    {
        IsOperationRunning = false;
        OperationProgressText = string.Empty;
    }

    #endregion

    // .... 
}

在服务器端，没有setter 的所有道具都是NULL。看起来构造函数被忽略。 这是设计吗？

由于这些道具在Redis中形成了一个键，我需要确保它们具有值。这是正确的，我已经在我的DTO中声明了公共设置器，然后使用Validators来确保所有道具都已设置 ??

Answer 1

是设计的DTO（数据传输对象）是指具有公共getter / setter和无参数构造函数的可序列化属性。

向私人制定者请求DTO

1 个答案: