我在 Apiary 蓝图示例中看到了以下操作部分。当用户传递错误的参数时，我想以 HTTP 状态 404 进行响应。例如，当用户通过 /questions/xyz 而不是 /questions/1 时。如您所见，我们定义 /questions 之后的参数必须是数字，但是当我传递 xyz 而不是数字时，它会以相同的对象回答。
## Questions [/questions/{question_id}]
An Questions object has the following attributes:
+ question - We can put some description for each attribute here.
+ published_at - An ISO8601 date when the question was published.
+ url (string)
+ choices - An array of Choice objects.
+ Parameters
+ question_id: `1` (number, required) - ID of the Questions in form of an integer
### View an Questions Detail [GET]
+ Response 200 (application/json)
{
"question": "Favourite programming language?",
"published_at": "2014-11-11T08:40:51.620Z",
"url": "/questions/1",
"choices": [
{ <!-- First Object -->
"choice": "Swift",
"url": "/questions/1/choices/1",
"votes": 2048
}
]
}
+ Response 404 (text/plain)
There is no such a message for the passed id. For example if you pass 'xyz' we expect to show this message.
请给我写完整的代码。提前致谢。