C# 针对包含逗号分隔电子邮件的字符串进行验证
我试图在MVC模型中验证此属性,该模型可以包含零个或多个以逗号分隔的电子邮件地址:C# 针对包含逗号分隔电子邮件的字符串进行验证,c#,asp.net-mvc-3,validation,fluentvalidation,C#,Asp.net Mvc 3,Validation,Fluentvalidation,我试图在MVC模型中验证此属性,该模型可以包含零个或多个以逗号分隔的电子邮件地址: public class DashboardVM { public string CurrentAbuseEmails { get; set; } ... } 问题是如何使用电子邮件地址的内置fluent验证规则来实现这一点? 现在我有了一个使用Must和正则表达式的解决方案,但我没有找到它。。足够优雅 public DashboardVMValidator() {
public class DashboardVM
{
public string CurrentAbuseEmails { get; set; }
...
}
问题是如何使用电子邮件地址的内置fluent验证规则来实现这一点?
现在我有了一个使用Must和正则表达式的解决方案,但我没有找到它。。足够优雅
public DashboardVMValidator()
{
RuleFor(x => x.CurrentAbuseEmails).Must(BeValidDelimitedEmailList).WithMessage("One or more email addresses are not valid.");
}
private bool BeValidDelimitedEmailList(string delimitedEmails)
{
//... match very very long reg. expression
}
到目前为止,包括RuleFor(…).EmailAddress()在内的最接近的解决方案是在下面创建一个自定义验证器,并从字符串中对每封电子邮件调用Validate,但由于某种原因,这没有起作用(AbuseEmailValidator在对每封电子邮件调用Validator.Validate时无法获取谓词x=>x)
public类:seemailvalidator:AbstractValidator
{
公共邮件验证程序()
{
RuleFor(x=>x).EmailAddress().WithMessage(“电子邮件地址无效”);
}
}
有没有简单的方法可以做到这一点?与此解决方案类似,但使用一个字符串而不是字符串列表,因为我无法使用SetCollectionValidator(或者我可以吗?):您可以尝试以下方法:
public class InvoiceValidator : AbstractValidator<ContractInvoicingEditModel>
{
public InvoiceValidator()
{
RuleFor(m => m.EmailAddressTo)
.Must(CommonValidators.CheckValidEmails).WithMessage("Some of the emails provided are not valid");
}
}
public static class CommonValidators
{
public static bool CheckValidEmails(string arg)
{
var list = arg.Split(';');
var isValid = true;
var emailValidator = new EmailValidator();
foreach (var t in list)
{
isValid = emailValidator.Validate(new EmailModel { Email = t.Trim() }).IsValid;
if (!isValid)
break;
}
return isValid;
}
}
public class EmailValidator : AbstractValidator<EmailModel>
{
public EmailValidator()
{
RuleFor(x => x.Email).EmailAddress();
}
}
public class EmailModel
{
public string Email { get; set; }
}
public static IRuleBuilderInitial<T, string> CheckValidEmails<T>(this IRuleBuilder<T, string> ruleBuilder, Func<T, string> separatorSelector)
{
if (separatorSelector == null)
throw new ArgumentNullException(nameof(separatorSelector), $"{nameof(separatorSelector)} cannot be null");
bool isValid;
var emailValidator = new EmailValidator();
return ruleBuilder.Custom((emailsStr, context) =>
{
if (string.IsNullOrWhiteSpace(emailsStr))
{
context.AddFailure($"'{context.DisplayName}' must not be empty");
return;
}
var separator = separatorSelector.Invoke((T) context.InstanceToValidate);
var emails = emailsStr.Split(separator);
foreach (var email in emails)
{
isValid = emailValidator.Validate(email.Trim()).IsValid;
if (!isValid)
{
context.AddFailure($"'{email}' is not a valid email address");
break;
}
}
});
}
public class Validator : AbstractValidator<Command>
{
public Validator()
{
RuleFor(c => c.ExportOptions.EmailAddress).CheckValidEmails(",").When(c => c.ExportType == ExportType.Email).WithMessage("One or more email addresses are not valid");
}
}
公共类InvoiceValidator:AbstractValidator
{
公共发票验证器()
{
规则(m=>m.EmailAddressTo)
.Must(CommonValidators.CheckValidEmails).WithMessage(“提供的某些电子邮件无效”);
}
}
公共静态类CommonValidator
{
公共静态bool CheckValidEmails(字符串arg)
{
var list=arg.Split(“;”);
var isValid=true;
var emailValidator=新的emailValidator();
foreach(列表中的变量t)
{
isValid=emailValidator.Validate(新的EmailModel{Email=t.Trim()});
如果(!isValid)
打破
}
返回有效;
}
}
公共类EmailValidator:AbstractValidator
{
公共电子邮件验证程序()
{
RuleFor(x=>x.Email).EmailAddress();
}
}
公共类电子邮件模型
{
公共字符串电子邮件{get;set;}
}
如果您使用中间poco,它似乎可以正常工作。在这种情况下,我的电子邮件以“;”分隔。希望有帮助。上面提供的答案很好,但很旧。因此,一些代码无法与FluentValidation Nuget包的never版本一起使用。至少我有构建错误。此外,解决方案可能更复杂。 建议使用以下方法: 型号:
public sealed class Email
{
public string From { get; set; }
/// <summary>
/// Email address(es) to (can be settable separated list, default: ;)
/// </summary>
public string To { get; set; }
//.....
/// <summary>
/// Separator char for multiple email addresses
/// </summary>
public char EmailAddressSeparator { get; set; }
public Email()
{
EmailAddressSeparator = ';';
}
}
公共密封类电子邮件
{
来自{get;set;}的公共字符串
///
///电子邮件地址至(可设置为分隔列表,默认值:;)
///
{get;set;}的公共字符串
//.....
///
///多个电子邮件地址的分隔字符
///
公共字符EmailAddressSeparator{get;set;}
公共电子邮件()
{
EmailAddressSeparator=';';
}
}
自定义验证程序:
public static class CommonValidators
{
public static bool CheckValidEmails(Email email, string emails)
{
if(string.IsNullOrWhiteSpace(emails))
{
return true;
}
var list = emails.Split(email.EmailAddressSeparator);
var isValid = true;
foreach (var t in list)
{
var email = new EmailModel { Email = t.Trim() };
var validator = new EmailModelValidator();
isValid = validator.Validate(email).IsValid;
if (!isValid)
{
break;
}
}
return isValid;
}
private class EmailModel
{
public string Email { get; set; }
}
private class EmailModelValidator : AbstractValidator<EmailModel>
{
public EmailModelValidator()
{
RuleFor(x => x.Email).EmailAddress(EmailValidationMode.AspNetCoreCompatible).When(x => !string.IsNullOrWhiteSpace(x.Email));
}
}
}
公共静态类CommonValidator
{
公共静态bool CheckValidEmails(电子邮件、字符串电子邮件)
{
if(string.IsNullOrWhiteSpace(电子邮件))
{
返回true;
}
var list=emails.Split(email.EmailAddressSeparator);
var isValid=true;
foreach(列表中的变量t)
{
var email=newemailmodel{email=t.Trim()};
var validator=新的EmailModelValidator();
isValid=validator.Validate(电子邮件).isValid;
如果(!isValid)
{
打破
}
}
返回有效;
}
私有类模型
{
公共字符串电子邮件{get;set;}
}
私有类EmailModelValidator:AbstractValidator
{
公共EmailModelValidator()
{
RuleFor(x=>x.Email).EmailAddress(EmailValidationMode.AspNetCoreCompatible).When(x=>!string.IsNullOrWhiteSpace(x.Email));
}
}
}
用法:
public class EmailValidator : AbstractValidator<Email>
{
public EmailValidator()
{
RuleFor(x => x.To).NotEmpty()
.Must(CommonValidators.CheckValidEmails)
.WithMessage($"'{nameof(To)}' some of the emails provided are not a valid email address.");
}
}
public class EmailsModelValidator : AbstractValidator<EmailsModel>
{
public EmailsModelValidator()
{
RuleFor(x => x.Emails).CheckValidEmails(";");
RuleFor(x => x.Emails).CheckValidEmails(x => x.EmailsSeparator);
}
}
公共类EmailValidator:AbstractValidator
{
公共电子邮件验证程序()
{
(x=>x.To).NotEmpty()的规则
.Must(CommonValidators.CheckValidEmails)
.WithMessage($“{nameof(To)}”提供的某些电子邮件不是有效的电子邮件地址。”);
}
}
您可以编写自定义验证程序扩展。
通过这种方式,您可以定义所需的任何分隔符,将其用于每个字符串属性而不仅仅是特定属性,并根据条件添加不同的消息
您可以从文档中了解有关自定义验证器的更多信息:
自定义验证程序扩展:
public static class ValidatorExtensions
{
public static IRuleBuilderInitial<T, string> CheckValidEmails<T>(this IRuleBuilder<T, string> ruleBuilder, string separator)
{
bool isValid;
var emailValidator = new EmailValidator();
return ruleBuilder.Custom((emailsStr, context) =>
{
if (string.IsNullOrWhiteSpace(emailsStr))
{
context.AddFailure($"'{context.DisplayName}' must not be empty");
return;
}
var emails = emailsStr.Split(separator);
foreach (var email in emails)
{
isValid = emailValidator.Validate(email.Trim()).IsValid;
if (!isValid)
{
context.AddFailure($"'{email}' is not a valid email address");
break;
}
}
});
}
private class EmailValidator : AbstractValidator<string>
{
public EmailValidator()
{
RuleFor(x => x).EmailAddress();
}
}
}
公共静态类验证扩展
{
公共静态IRuleBuilderInitial CheckValidEmails(此IRuleBuilder规则生成器,字符串分隔符)
{
bool是有效的;
var emailValidator=新的emailValidator();
返回ruleBuilder.Custom((emailsStr,context)=>
{
if(string.IsNullOrWhiteSpace(emailsStr))
{
context.AddFailure($“{context.DisplayName}”不能为空);
返回;
}
var emails=emailsStr.Split(分隔符);
foreach(电子邮件中的var电子邮件)
{
isValid=emailValidator.Validate(email.Trim()).isValid;
如果(!isValid)
{
context.AddFailure($“{email}”不是有效的电子邮件地址”);
打破
}
}
});
}
私有类EmailValidator:AbstractValidator
{
公共电子邮件验证程序()
{
RuleFor(x=>x).EmailAddress();
}
}
}
如果希望将分隔符作为模型属性,则可以编写如下扩展:
public class InvoiceValidator : AbstractValidator<ContractInvoicingEditModel>
{
public InvoiceValidator()
{
RuleFor(m => m.EmailAddressTo)
.Must(CommonValidators.CheckValidEmails).WithMessage("Some of the emails provided are not valid");
}
}
public static class CommonValidators
{
public static bool CheckValidEmails(string arg)
{
var list = arg.Split(';');
var isValid = true;
var emailValidator = new EmailValidator();
foreach (var t in list)
{
isValid = emailValidator.Validate(new EmailModel { Email = t.Trim() }).IsValid;
if (!isValid)
break;
}
return isValid;
}
}
public class EmailValidator : AbstractValidator<EmailModel>
{
public EmailValidator()
{
RuleFor(x => x.Email).EmailAddress();
}
}
public class EmailModel
{
public string Email { get; set; }
}
public static IRuleBuilderInitial<T, string> CheckValidEmails<T>(this IRuleBuilder<T, string> ruleBuilder, Func<T, string> separatorSelector)
{
if (separatorSelector == null)
throw new ArgumentNullException(nameof(separatorSelector), $"{nameof(separatorSelector)} cannot be null");
bool isValid;
var emailValidator = new EmailValidator();
return ruleBuilder.Custom((emailsStr, context) =>
{
if (string.IsNullOrWhiteSpace(emailsStr))
{
context.AddFailure($"'{context.DisplayName}' must not be empty");
return;
}
var separator = separatorSelector.Invoke((T) context.InstanceToValidate);
var emails = emailsStr.Split(separator);
foreach (var email in emails)
{
isValid = emailValidator.Validate(email.Trim()).IsValid;
if (!isValid)
{
context.AddFailure($"'{email}' is not a valid email address");
break;
}
}
});
}
public class Validator : AbstractValidator<Command>
{
public Validator()
{
RuleFor(c => c.ExportOptions.EmailAddress).CheckValidEmails(",").When(c => c.ExportType == ExportType.Email).WithMessage("One or more email addresses are not valid");
}
}
公共静态IRuleBuilder初始检查有效性文件(此IRuleBuilder规则生成器,函数分隔符选择器)
{
if(separatorSelector==null)
抛出新ArgumentNullException(nameof(separatorSelector),$“{nameof(separatorSelector)}不能为null”);
bool是有效的;
var电子邮件验证程序=
public class Validator : AbstractValidator<Command>
{
public Validator()
{
RuleFor(c => c.ExportOptions.EmailAddress).CheckValidEmails(",").When(c => c.ExportType == ExportType.Email).WithMessage("One or more email addresses are not valid");
}
}