如何通过FluentValidation验证上传的文件 [英] How to validate uploaded files by FluentValidation
本文介绍了如何通过FluentValidation验证上传的文件的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何使用FluentValidation验证上传的文件?
How can I validate uploaded files using FluentValidation?
<input type="file" asp-for="Files" multiple />
推荐答案
您的ViewModel
必须具有public IList<IFormFile> Files { get; set; }
:
public class CustomViewModel
{
public IList<IFormFile> Files { get; set; }
...
}
您必须为IFormFile
类型创建一个验证器,如下所示:
you must create a validator for IFormFile
type as below:
public class FileValidator : AbstractValidator<IFormFile>
{
public FileValidator()
{
RuleFor(x => x.Length).NotNull().LessThanOrEqualTo(100)
.WithMessage("File size is larger than allowed");
RuleFor(x => x.ContentType).NotNull().Must(x => x.Equals("image/jpeg") || x.Equals("image/jpg") || x.Equals("image/png"))
.WithMessage("File type is larger than allowed");
...
}
}
现在您可以像这样在CustomValidator
中使用FileValidator
:
now you can use FileValidator
in your CustomValidator
like this:
public class CustomValidator : AbstractValidator<CustomViewModel>
{
public CustomValidator()
{
RuleForEach(x => x.Files).SetValidator(new FileValidator());
}
}
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