在asp.net core中使用的验证框架FluentValidation

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以下文章来源于桂迹 ,作者桂素伟

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FluentValidation在asp.net core中怎么使用?
先安装包。

Install-Package FluentValidation.AspNetCore

和上一篇的实体类和验证类一样。
实体类:
public class Person{    public int Id { get; set; }    public string Name { get; set; }    public string Tel { get; set; }    public string Email { get; set; }    public DateTime Birthday { get; set; }    public string IDCard { get; set; }    public PersonAddress Address { get; set; }}public class PersonAddress{    public string Country { get; set; }    public string Province { get; set; }    public string City { get; set; }    public string County { get; set; }    public string Address { get; set; }    public string Postcode { get; set; }}

验证类:

/// <summary>/// Person验证/// </summary>public class PersonValidator : AbstractValidator<Person>{    public PersonValidator()    {        RuleFor(p => p.Name).NotNull().NotEmpty();        RuleFor(p => p.Email).NotNull().EmailAddress();        RuleFor(p => p.Birthday).NotNull();        RuleFor(p => p.IDCard)            .NotNull()            .When(p => (DateTime.Now > p.Birthday.AddYears(1)))            .WithMessage(p => $"出生日期为{p.Birthday},现在时间为{DateTime.Now},大于一岁,CardID值必填!")            .NotEmpty()            .When(p => (DateTime.Now > p.Birthday.AddYears(1)))            .WithMessage(p => $"出生日期为{p.Birthday},现在时间为{DateTime.Now},大于一岁,CardID值必填!")            .Length(18)            .When(p => (DateTime.Now > p.Birthday.AddYears(1)));        RuleFor(p => p.Tel).NotNull().Matches(@"^(\d{3,4}-)?\d{6,8}$|^[1]+[3,4,5,8]+\d{9}$");        RuleFor(p => p.Address).NotNull();        RuleFor(p => p.Address).SetValidator(new PersonAddressValidator());    }}/// <summary>/// Person Address验证/// </summary>public class PersonAddressValidator : AbstractValidator<PersonAddress>{    public PersonAddressValidator()    {        RuleFor(a => a.Country).NotNull().NotEmpty();        RuleFor(a => a.Province).NotNull().NotEmpty();        RuleFor(a => a.City).NotNull().NotEmpty();        RuleFor(a => a.County).NotNull().NotEmpty();        RuleFor(a => a.Address).NotNull().NotEmpty();        RuleFor(a => a.Postcode).NotNull().NotEmpty().Length(6);    }}

Starup.cs

public void ConfigureServices(IServiceCollection services){    services        .AddControllers()        .AddFluentValidation();    services.AddTransient<IValidator<Person>, PersonValidator>();    services.AddSwaggerGen(c =>    {        c.SwaggerDoc("v1", new OpenApiInfo { Title = "FluentValidationWebDemo01", Version = "v1" });    });}
这里和asp.net core mvc的模型验证如出一辙。
[ApiController] [Route("[controller]")] public class HomeController : ControllerBase {     private readonly ILogger<HomeController> _logger;     private readonly IValidator<Person> _validator;     public HomeController(ILogger<HomeController> logger, IValidator<Person> validator)     {         _validator = validator;         _logger = logger;     }     [HttpPost("/addperson")]     public IActionResult AddPerson([FromBody] Person person)     {         _logger.LogInformation("添加Person");         if (ModelState.IsValid)         {             return Ok("验证成功后,假装这里作了后端业务处理");         }         _logger.LogError("验证Person失败");         return BadRequest("person没有验证通过");     } }
测试传入数据:
{    "id":0,    "birthday":"2021-03-29T07:00:18.061Z",    "idCard":"",    "name":"",    "email":"axzxs2001163.com",    "tel":"1345346714",    "address":{        "country":"中国",        "province":"山西",        "city":"",        "county":"古城",        "address":"",        "postcode":"04600"    }}
结果:
{  "type": "https://tools.ietf.org/html/rfc7231#section-6.5.1",  "title": "One or more validation errors occurred.",  "status": 400,  "traceId": "00-21fffead3f693fdf9156d796baf4e4ef-a7d39f85acf57cff-00",  "errors": {    "Tel": [      "'Tel' 的格式不正确。"    ],    "Name": [      "'Name' 不能为空。"    ],    "Email": [      "'Email' 不是有效的电子邮件地址。"    ],    "Address.City": [      "'City' 不能为空。"    ],    "Address.Address": [      "'Address' 不能为空。"    ],    "Address.Postcode": [      "'Postcode' 必须是 6 个字符,您输入了 5 字符。"    ]  }}
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