Can't get HTTP PUT request to work in ASP.NET Core

问题

I'm trying to update an entry in the game table. However, my PUT request in ASP.NET never seems to trigger, and I can't figure out why.

This is controller in ASP.NET:

[Route("game/{update.GameID}")]
[HttpPut]
public IActionResult updateGame([FromBody]Game update)
{
    var result = context.Games.SingleOrDefault(g => g.GameID == update.GameID);
    if (result != null)
    {
        result = update;
        context.SaveChanges();
    }
    return Created("", result);
}

And this is the code I use in Angular:

url:string;
constructor(private _http: HttpClient) {
    this.url = "https://localhost:44359/api/v1/"
};

putGame(id:number, game:Game){
    return this._http.put(this.url + "game/" + id, game);
}

Edit 1: I do have a list of GET-requests, which all work just fine. It's only the PUT-request that fails.

回答1:

If you are using PUT request you need to add a resource id either to update or create new - so just don't combine your id with your object

[HttpPut("game/{id}")]
public IActionResult UpdateGame(int id, [FromBody]Game update) {
    //...
}

If you are using Asp.net Core you can just re-write your URL on your HTTP verbs attribute like the code above - So pass your resource id in the URL and bind your object in the body - Your URL should read as https://localhost:44359/api/v1/game/2

Hope this helps you - Happy coding !!

回答2:

The route template parameter {update.GameID} is not standard to what is suggested by documentation

Assuming the game id is an integer review the following

//PUT .../game/5
[Route("game/{id:int}")]
[HttpPut]
public IActionResult updateGame(int id, [FromBody]Game update) {
    //...
}

Reference Routing to controller actions in ASP.NET Core

I would also suggest you review the logic of the action as I do not believe it is doing what you think it does with updating the entity returned from the context.

回答3:

Can you modify your defining route just like

[Route("game")]
[HttpPut]
public IActionResult updateGame([FromBody]Game update)
{
   //your code
}

And call from angular like

putGame(game:Game){
    return this._http.put(this.url + "game", game);
}

you can receive gameid from game object so don't need from url

来源：https://stackoverflow.com/questions/53244551/cant-get-http-put-request-to-work-in-asp-net-core