阅读目录 为什么要使用FluentValidation 使用FluentValidation FluentValidation学习的资料 回到顶部 为什么要使用FluentValidation 1.在日常的开发中,需要验证参数的合理性,不紧前端需要验证传毒的参数,后端也需要验证参数 2.在领域模型中也应该验证,做好防御性的编程是一种好的习惯(其实以前重来不写的,被大佬教育了一番) 3.FluentValidation 是.NET 开发的验证框架,开源,主要是简单好用,内置了一些常用的验证器,可以直接使用,扩展也很方便 回到顶部 使用FluentValidation 1.引入FluentValidation.AspNetCore NuGet包 2.建立需要验证的类 复制代码 /// /// 创建客户 /// public class CreateCustomerDto { /// /// 客户姓名 /// public string CustomerName { get; set; } /// /// 客户年龄 /// public string CustomerAge { get; set; } /// /// 客户电话 /// public string CustomerPhone { get; set; } /// /// 客户地址 /// public Address CustomerAddress { get; set; } } /// /// 验证 /// public class CreateCustomerDtoValidator : AbstractValidator { public CreateCustomerDtoValidator() { RuleFor(x => x.CustomerName) .NotEmpty() .WithMessage("客户姓名不能为空"); RuleFor(x => x.CustomerPhone) .NotEmpty() .WithMessage("客户电话不能为空"); } } 复制代码 3.统一返回验证的信息,ResponseResult为全局统一参数返回的类 复制代码 /// /// 添加AddFluentValidationErrorMessage /// /// public DependencyInjectionService AddFluentValidationErrorMessage() { _services.Configure(options => { options.InvalidModelStateResponseFactory = (context) => { var errors = context.ModelState .Values .SelectMany(x => x.Errors .Select(p => p.ErrorMessage)) .ToList(); var result = new ResponseResult> { StatusCode = "00009", Result = errors, Message = string.Join(",", errors.Select(e => string.Format("{0}", e)).ToList()), IsSucceed = false }; return new BadRequestObjectResult(result); }; }); return _dependencyInjectionConfiguration; } 复制代码 4.注入验证的类 使用builder.RegisterType().As();比较麻烦每次新增都需要添加一次注入 所以我们使用批量的注入,来减少麻烦,通过反射获取所有的验证的类批量注入 复制代码 /// /// 添加MVC /// /// public DependencyInjectionService AddMvc() { _services.AddControllers(options => { options.Filters.Add(typeof(LogHelper)); }).AddJsonOptions(options => { //忽略循环引用 //options.JsonSerializerOptions.IgnoreReadOnlyProperties = true; }).AddFluentValidation(options => { options.RunDefaultMvcValidationAfterFluentValidationExecutes = false; var validatorList = GetFluentValidationValidator("ConferenceWebApi"); foreach (var item in validatorList) { options.RegisterValidatorsFromAssemblyContaining(item); } }); return _dependencyInjectionConfiguration; } /// /// 获取所有的FluentValidation Validator的类 /// public IEnumerable GetFluentValidationValidator(string assemblyName) { if (assemblyName == null) throw new ArgumentNullException(nameof(assemblyName)); if (string.IsNullOrEmpty(assemblyName)) throw new ArgumentNullException(nameof(assemblyName)); var implementAssembly = RuntimeHelper.GetAssembly(assemblyName); if (implementAssembly == null) { throw new DllNotFoundException($"the dll ConferenceWebApi not be found"); } var validatorList = implementAssembly.GetTypes().Where(e => e.Name.EndsWith("Validator")); return validatorList; } 复制代码 5.使用起来就十分简单了 复制代码 /// /// 创建客户 /// /// /// [HttpPost] public async Task> CreateCustomer([FromBody] CreateCustomerDto input) { var createCustomerCommand = new CreateCustomerCommand(input.CustomerName,input.CustomerAge,input.CustomerPhone,input.CustomerAddress); await _commandService.SendCommandAsync(createCustomerCommand); var result = new ResponseResult { IsSucceed = true, Result = "创建客户成功!" }; return result; } 复制代码 回到顶部 FluentValidation学习的资料 感谢大佬们的分享,零度编程中的教程非常的全面,包括了许多的验证器的使用,记不住时直接可以翻阅查看 零度编程:https://www.xcode.me/post/5849 Lamond Lu:https://www.cnblogs.com/lwqlun/p/10311945.htmlhttps://www.cnblogs.com/lifeng618/p/11988236.html