状态 415 不支持的媒体类型表单数据

Question

我正在尝试使用来自 Body 的表单数据从 PostMan 的 API 控制器调用 Post 方法。但是从邮递员点击发送按钮后，显示错误消息“不支持的媒体类型”

{
    "type": "https://tools.ietf.org/html/rfc7231#section-6.5.13",
    "title": "Unsupported Media Type",
    "status": 415,
    "traceId": "|cd267e9d-4f557653ef6391ef."
}

这是代码。 型号 class

public class PersonCreationDTO
    {
        [Required]
        [StringLength(120)]
        public string PersonName { get; set; }
        public string Biography { get; set; }
        public DateTime DateOfBirth { get; set; }
        public IFormFile Picture { get; set; }
        
    }


public class Person
    {
        public int Id { get; set; }
        [Required]
        [StringLength(120)]
        public string PersonName { get; set; }
        public string Biography { get; set; }
        public DateTime DateOfBirth { get; set; }
        public string Picture { get; set; }
    }

控制器

[ApiController]
    [Route("api/people")]
 public class PeopleController:ControllerBase
    {
        private readonly ApplicationDbContext context;
        private readonly IMapper mapper;

        public PeopleController(ApplicationDbContext context, IMapper mapper)
        {
            this.context = context;
            this.mapper = mapper;
        }
    [HttpPost]
        public async Task<ActionResult> Post([FromBody] PersonCreationDTO personCreation)
        {
            var person = mapper.Map<Person>(personCreation);
            context.Add(person);
            //await context.SaveChangesAsync();
            //var personDTO = mapper.Map<PersonDTO>(person);
            //return new CreatedAtRouteResult("getPerson", new { Id = personDTO.Id }, personDTO);

            return NoContent();
        }
}

Answer 1

添加 [FromForm] 而不是 [FromBody]

[HttpPost]
public async Task<ActionResult> Post([FromForm] PersonCreationDTO personCreation)
{
  //clarify code
}

Answer 2

1. 在 Postman 中单击 headers 并单击 (select) 第一个内容类型 - multipart/form-data；边界=发送请求时计算

2. 在您的控制器操作中，将 [FromBody] 替换为 [FromForm]