/// <summary>
/// 检查数据传输对象是否合法，不合法时抛出例外
/// </summary>
public static void Validate(this IInputDto inputDto)
{
IList <string> errors;
if (!inputDto.IsValid(out errors))
{
throw new BadRequestException(string.Join("\r\n", errors));
}
}
/// <summary>
/// InputDto属性验证
/// </summary>
public static void Validate <TKey>(this IInputDto <TKey> dto)
{
Check.NotNull(dto, nameof(dto));
Type type = dto.GetType();
if (!_dict.TryGetValue(type, out ConcurrentDictionary <PropertyInfo, ValidationAttribute[]> dict))
{
PropertyInfo[] properties = type.GetProperties();
dict = new ConcurrentDictionary <PropertyInfo, ValidationAttribute[]>();
if (properties.Length == 0)
{
_dict[type] = dict;
return;
}
foreach (var property in properties)
{
dict[property] = null;
}
_dict[type] = dict;
}
foreach (PropertyInfo property in dict.Keys)
{
if (!dict.TryGetValue(property, out ValidationAttribute[] attributes) || attributes == null)
/// <summary>
/// 检查数据传输对象是否合法，不合法时返回错误消息
/// </summary>
public static bool IsValid(this IInputDto inputDto, out IList <string> errors)
{
errors = new List <string>();
var properties = inputDto.GetType().FastGetProperties();
foreach (var property in properties)
{
if (!property.CanRead)
{
continue;
}
var attributes = property.FastGetCustomAttributes(typeof(ValidationAttribute));
if (attributes.Length == 0)
{
continue;
}
var value = property.FastGetValue(inputDto);
// 获取属性名称
var propertyName = new T(property
.FastGetCustomAttributes(typeof(DescriptionAttribute))
.OfType <DescriptionAttribute>()
.FirstOrDefault()?.Description ?? property.Name).ToString();
// 检查标记在属性上的验证属性
foreach (var attribute in attributes.OfType <ValidationAttribute>())
{
if (attribute.IsValid(value))
{
continue;
}
errors.Add((string)FormatValidationErrorMethod
.MakeGenericMethod(attribute.GetType())
.FastInvoke(null, attribute, propertyName));
}
}
return(errors.Count == 0);
}
/// <summary>
/// 检查<see cref="IInputDto{TKey}"/>各属性的合法性，否则抛出<see cref="ValidationException"/>异常
/// </summary>
public static void Validate <TKey>(IInputDto <TKey> dto, string paramName)
{
NotNull(dto, paramName);
dto.Validate();
}
/// <summary>
/// 检查数据传输对象是否合法
/// </summary>
public static bool IsValid(this IInputDto inputDto)
{
IList <string> errors;
return(IsValid(inputDto, out errors));
}
