如何返回带有自定义错误 model 的 BadRequest 响应？ WEB API 2

Question

我想用 BadRequest 返回 json 以下

{
    "error": {
        "code": "BAD_REQUEST_ERROR",
        "description": "frId is/are not required and should not be sent",
        "source": null,
        "step": null,
        "reason": null,
        "metadata": {}
    }
}

Answer 1

您可以制作一个 class 来封装响应 object ，如下所示：

class Error
{
    public string Code { get; set; }
    public string Description { get; set; }
    public string Source { get; set; }
    public string Step { get; set; }
    public string Reason { get; set; }
    public object Metadata { get; set; }
}

然后您可以像这样返回该 object 的实例：

[HttpGet]
public IActionResult SomeGetReq()
{
    try
    {
        return Ok(someService.SomeMethod());
    }
    catch (Exception e)
    {
        // you can use e here
        return BadRequest(new Error
        {
            Code = "BAD_REQUEST_ERROR",
            Description = "frId is/are not required and should not be sent"
        });
    }
}