ASP.NET MVC中使用FluentValidation验证实体(转载)

时间:2023-01-22 04:09:43

  1、FluentValidation介绍

  FluentValidation是与ASP.NET DataAnnotataion Attribute验证实体不同的数据验证组件,提供了将实体与验证分离开来的验证方式,同时FluentValidation还提供了表达式链式语法。

  2、安装FluentValidation

  FluentValidation地址:http://fluentvalidation.codeplex.com/

  使用Visual Studio的管理NuGet程序包安装FluentValidation及FluentValidation.Mvc

  3、通过ModelState使用FluentValidation验证

  项目解决方案结构图:

  ASP.NET MVC中使用FluentValidation验证实体(转载)

  实体类Customer.cs:

ASP.NET MVC中使用FluentValidation验证实体(转载)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web; namespace Libing.Portal.Web.Models.Entities
{
public class Customer
{
public int CustomerID { get; set; }
public string CustomerName { get; set; }
public string Email { get; set; }
public string Address { get; set; }
public string Postcode { get; set; }
public float? Discount { get; set; }
public bool HasDiscount { get; set; }
}
}
ASP.NET MVC中使用FluentValidation验证实体(转载)

  数据验证类CustomerValidator.cs:

ASP.NET MVC中使用FluentValidation验证实体(转载)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web; using FluentValidation; using Libing.Portal.Web.Models.Entities; namespace Libing.Portal.Web.Models.Validators
{
public class CustomerValidator : AbstractValidator<Customer>
{
public CustomerValidator()
{
RuleFor(customer => customer.CustomerName).NotNull().WithMessage("客户名称不能为空");
RuleFor(customer => customer.Email)
.NotEmpty().WithMessage("邮箱不能为空")
.EmailAddress().WithMessage("邮箱格式不正确");
RuleFor(customer => customer.Discount)
.NotEqual(0)
.When(customer => customer.HasDiscount);
RuleFor(customer => customer.Address)
.NotEmpty()
.WithMessage("地址不能为空")
.Length(20, 50)
.WithMessage("地址长度范围为20-50字节");
}
}
}
ASP.NET MVC中使用FluentValidation验证实体(转载)

  控制器类CustomerController.cs:

ASP.NET MVC中使用FluentValidation验证实体(转载)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc; using FluentValidation.Results; using Libing.Portal.Web.Models.Entities;
using Libing.Portal.Web.Models.Validators; namespace Libing.Portal.Web.Controllers
{
public class CustomerController : Controller
{
public ActionResult Index()
{
return View();
} public ActionResult Create()
{
return View();
} [HttpPost]
public ActionResult Create(Customer customer)
{
CustomerValidator validator = new CustomerValidator();
ValidationResult result = validator.Validate(customer); if (!result.IsValid)
{
result.Errors.ToList().ForEach(error =>
{
ModelState.AddModelError(error.PropertyName, error.ErrorMessage);
});
} if (ModelState.IsValid)
{
return RedirectToAction("Index");
} return View(customer);
}
}
}
ASP.NET MVC中使用FluentValidation验证实体(转载)

  View页面Create.cshtml,该页面为在添加View时选择Create模板自动生成:

ASP.NET MVC中使用FluentValidation验证实体(转载)
@model Libing.Portal.Web.Models.Entities.Customer

@{
Layout = null;
} <!DOCTYPE html> <html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Create</title>
</head>
<body>
@using (Html.BeginForm())
{
@Html.AntiForgeryToken() <div class="form-horizontal">
<h4>Customer</h4>
<hr />
@Html.ValidationSummary(true) <div class="form-group">
@Html.LabelFor(model => model.CustomerName, new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.CustomerName)
@Html.ValidationMessageFor(model => model.CustomerName)
</div>
</div> <div class="form-group">
@Html.LabelFor(model => model.Email, new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Email)
@Html.ValidationMessageFor(model => model.Email)
</div>
</div> <div class="form-group">
@Html.LabelFor(model => model.Address, new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Address)
@Html.ValidationMessageFor(model => model.Address)
</div>
</div> <div class="form-group">
@Html.LabelFor(model => model.Postcode, new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Postcode)
@Html.ValidationMessageFor(model => model.Postcode)
</div>
</div> <div class="form-group">
@Html.LabelFor(model => model.Discount, new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Discount)
@Html.ValidationMessageFor(model => model.Discount)
</div>
</div> <div class="form-group">
@Html.LabelFor(model => model.HasDiscount, new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.HasDiscount)
@Html.ValidationMessageFor(model => model.HasDiscount)
</div>
</div> <div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="Create" class="btn btn-default" />
</div>
</div>
</div>
}
</body>
</html>
ASP.NET MVC中使用FluentValidation验证实体(转载)

  运行效果:

  ASP.NET MVC中使用FluentValidation验证实体(转载)

  4、通过设置实体类Attribute与验证类进行验证

  修改实体类Customer.cs:

ASP.NET MVC中使用FluentValidation验证实体(转载)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web; using FluentValidation.Attributes; using Libing.Portal.Web.Models.Validators; namespace Libing.Portal.Web.Models.Entities
{
[Validator(typeof(CustomerValidator))]
public class Customer
{
public int CustomerID { get; set; }
public string CustomerName { get; set; }
public string Email { get; set; }
public string Address { get; set; }
public string Postcode { get; set; }
public float? Discount { get; set; }
public bool HasDiscount { get; set; }
}
}
ASP.NET MVC中使用FluentValidation验证实体(转载)

  修改Global.asax.cs:

ASP.NET MVC中使用FluentValidation验证实体(转载)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing; using FluentValidation.Attributes;
using FluentValidation.Mvc; namespace Libing.Portal.Web
{
public class MvcApplication : System.Web.HttpApplication
{
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
RouteConfig.RegisterRoutes(RouteTable.Routes); // FluentValidation设置
DataAnnotationsModelValidatorProvider.AddImplicitRequiredAttributeForValueTypes = false;
ModelValidatorProviders.Providers.Add(new FluentValidationModelValidatorProvider(new AttributedValidatorFactory()));
}
}
}
ASP.NET MVC中使用FluentValidation验证实体(转载)