net 6使用FluentValidation校验请求数据

1，nuget增加 FluentValidation.AspNetCore
2.  DI中添加
builder.Services.AddFluentValidation(opt=>{
    opt.RegisterValidatorsFromAssembly( Assembly.GetEntryAssembly());
});
3. 添加具体的校验类
using FluentValidation;

namespace EShopWebApi.Controllers;

public class UserUpdateRequestValidator : AbstractValidator<UserUpdateRequest>
{
    public UserUpdateRequestValidator()
    {
        RuleFor(c=>c.Name).MaximumLength(2).WithErrorCode("403").WithMessage("Name长度不能超过2");
    }
}

using Microsoft.AspNetCore.Mvc;

[ApiController]
[Route("[controller]")]
public class TestController
{
    [HttpPost("Test")]
    public async Task<ActionResult<string>> Test([FromBody] UserUpdateRequest request)
    {
        return await Task.FromResult("sd");
    }
}

using System.ComponentModel.DataAnnotations;

public class UserUpdateRequest{
    // 这种校验与实体类耦合
    // [MaxLength(2)]
    public string Name { get; set; }
    public int Age { get; set; }
}