你可以使用ASP.NET Core的过滤器来隐藏REST API响应中的DTO属性,具体的解决方案如下所示:
HidePropertyAttribute
。[AttributeUsage(AttributeTargets.Property)]
public class HidePropertyAttribute : Attribute { }
HidePropertyResultFilter
。public class HidePropertyResultFilter : IResultFilter
{
private readonly ApiVersion _apiVersion;
public HidePropertyResultFilter(ApiVersion apiVersion)
{
_apiVersion = apiVersion;
}
public void OnResultExecuting(ResultExecutingContext context)
{
var objectResult = context.Result as ObjectResult;
if (objectResult?.Value == null)
{
return;
}
var propertiesToHide = objectResult.Value.GetType().GetProperties()
.Where(p => p.GetCustomAttributes(typeof(HidePropertyAttribute), false).Any())
.ToList();
if (propertiesToHide.Any())
{
foreach (var property in propertiesToHide)
{
objectResult.Value.GetType().GetProperty(property.Name)?.SetValue(objectResult.Value, null);
}
}
context.Result = objectResult;
}
public void OnResultExecuted(ResultExecutedContext context)
{
}
}
HidePropertyAttribute
,以指定要隐藏的属性。public class MyDto
{
public int Id { get; set; }
[HideProperty]
public string SecretData { get; set; }
public string PublicData { get; set; }
}
ConfigureServices
方法中注册自定义的结果过滤器。services.AddMvc(options =>
{
options.Filters.Add(new HidePropertyResultFilter(apiVersion));
});
请注意,上述代码示例中使用了API版本来决定是否隐藏属性。如果你没有使用API版本控制,你可以根据自己的需求修改过滤器的实现方式。