ASP.NET内核中配置对象的模型验证

public class User
{
    [Required(ErrorMessage = "Name is required.")]
    public string Name { get; set; }

    [EmailAddress(ErrorMessage = "Invalid email address.")]
    public string Email { get; set; }

    [Range(18, 100, ErrorMessage = "Age must be between 18 and 100.")]
    public int Age { get; set; }
}

[ApiController]
[Route("api/[controller]")]
public class UsersController : ControllerBase
{
    [HttpPost]
    public IActionResult CreateUser([FromBody] User user)
    {
        if (ModelState.IsValid)
        {
            // 处理用户创建逻辑
            return Ok("User created successfully.");
        }
        else
        {
            // 返回验证错误信息
            return BadRequest(ModelState);
        }
    }
}

if (!ModelState.IsValid)
{
    var errors = ModelState.Values.SelectMany(v => v.Errors);
    return BadRequest(new { errors });
}