FluentValidation

FluentValidation — FluentValidation documentation

 

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public class CustomerValidator : AbstractValidator<Customer> {   public CustomerValidator()   {     RuleFor(x => x.Surname).NotEmpty();     RuleFor(x => x.Forename).NotEmpty().WithMessage("Please specify a first name");     RuleFor(x => x.Discount).NotEqual(0).When(x => x.HasDiscount);     RuleFor(x => x.Address).Length(20, 250);     RuleFor(x => x.Postcode).Must(BeAValidPostcode).WithMessage("Please specify a valid postcode");   }     private bool BeAValidPostcode(string postcode)   {     // custom postcode validating logic goes here   } }

　　

 

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using MediatR; using System.Runtime.Serialization;   namespace WebApplication1.Handles {     /// <summary>     /// 添加User实体 命令     /// </summary>       public class AddUserCommand : IRequest<bool>     {         public AddUserCommand(string userName, int age , string email)         {             UserName = userName;             Age = age;             Email = email;         }                 public string Email { get; set; }            public string UserName { get; set; }              public int Age { get; set; }     } }

　　

 

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using FluentValidation; using WebApplication1.Handles;   namespace WebApplication1.Validations {     public class AddUserCommandValidator : AbstractValidator<AddUserCommand>     {         public AddUserCommandValidator()         {             RuleFor(user => user.Age).NotEmpty().WithMessage("年龄不能为空").Must(ValidationAge).WithMessage("年龄必须大于0");             RuleFor(user => user.Email).NotEmpty().WithMessage("邮箱不能为空").EmailAddress(FluentValidation.Validators.EmailValidationMode.Net4xRegex);             RuleFor(user => user.UserName).NotEmpty().WithMessage("用户名不能为空");         }         /// <summary>         /// 验证年龄 大于0         /// </summary>         /// <param name="age"></param>         /// <returns></returns>         private bool ValidationAge(int age)         {             return age > 0 ? true : false;         }     } }

　　

 

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1 2	//模型验证注入 builder.Services.AddScoped<IValidator<AddUserCommand>, AddUserCommandValidator>();