[c#] ASP.NET Core의 get 메서드에 여러 매개 변수를 전달하는 방법

다른 답변 후 귀하의 의견에서 요청한 오버로딩에 대한 자세한 내용을 추가하려면 여기에 요약이 있습니다. 주석은 ApiController각 GET쿼리에서 어떤 작업이 호출되는지 보여줍니다 .

public class ValuesController : ApiController
{
    // EXPLANATION: See the view for the buttons which call these WebApi actions. For WebApi controllers, 
    //          there can only be one action for a given HTTP verb (GET, POST, etc) which has the same method signature, (even if the param names differ) so
    //          you can't have Get(string height) and Get(string width), but you can have Get(int height) and Get(string width).
    //          It isn't a particularly good idea to do that, but it is true. The key names in the query string must match the
    //          parameter names in the action, and the match is NOT case sensitive. This demo app allows you to test each of these
    //          rules, as follows:
    // 
    // When you send an HTTP GET request with no parameters (/api/values) then the Get() action will be called.
    // When you send an HTTP GET request with a height parameter (/api/values?height=5) then the Get(int height) action will be called.
    // When you send an HTTP GET request with a width parameter (/api/values?width=8) then the Get(string width) action will be called.
    // When you send an HTTP GET request with height and width parameters (/api/values?height=3&width=7) then the 
    //          Get(string height, string width) action will be called.
    // When you send an HTTP GET request with a depth parameter (/api/values?depth=2) then the Get() action will be called
    //          and the depth parameter will be obtained from Request.GetQueryNameValuePairs().
    // When you send an HTTP GET request with height and depth parameters (/api/values?height=4&depth=5) then the Get(int height) 
    //          action will be called, and the depth parameter would need to be obtained from Request.GetQueryNameValuePairs().
    // When you send an HTTP GET request with width and depth parameters (/api/values?width=3&depth=5) then the Get(string width) 
    //          action will be called, and the depth parameter would need to be obtained from Request.GetQueryNameValuePairs().
    // When you send an HTTP GET request with height, width and depth parameters (/api/values?height=7&width=2&depth=9) then the 
    //          Get(string height, string width) action will be called, and the depth parameter would need to be obtained from 
    //          Request.GetQueryNameValuePairs().
    // When you send an HTTP GET request with a width parameter, but with the first letter of the parameter capitalized (/api/values?Width=8) 
    //          then the Get(string width) action will be called because the case does NOT matter.
    // NOTE: If you were to uncomment the Get(string height) action below, then you would get an error about there already being  
    //          a member named Get with the same parameter types. The same goes for Get(int id).
    //
    // ANOTHER NOTE: Using the nullable operator (e.g. string? paramName) you can make optional parameters. It would work better to
    //          demonstrate this in another ApiController, since using nullable params and having a lot of signatures is a recipe
    //          for confusion.

    // GET api/values
    public IEnumerable<string> Get()
    {
        return Request.GetQueryNameValuePairs().Select(pair => "Get() => " + pair.Key + ": " + pair.Value);
        //return new string[] { "value1", "value2" };
    }

    //// GET api/values/5
    //public IEnumerable<string> Get(int id)
    //{
    //    return new string[] { "Get(height) => height: " + id };
    //}

    // GET api/values?height=5
    public IEnumerable<string> Get(int height) // int id)
    {
        return new string[] { "Get(height) => height: " + height };
    }

    // GET api/values?height=3
    public IEnumerable<string> Get(string height)
    {
        return new string[] { "Get(height) => height: " + height };
    }

    //// GET api/values?width=3
    //public IEnumerable<string> Get(string width)
    //{
    //    return new string[] { "Get(width) => width: " + width };
    //}

    // GET api/values?height=4&width=3
    public IEnumerable<string> Get(string height, string width)
    {
        return new string[] { "Get(height, width) => height: " + height + ", width: " + width };
    }
}

궁금한 경우를 대비하여 단일 경로 만 필요합니다.

    config.Routes.MapHttpRoute(
        name: "DefaultApi",
        routeTemplate: "api/{controller}/{id}",
        defaults: new { id = RouteParameter.Optional }
    );

이 MVC보기 또는 유사한 것으로 모든 것을 테스트 할 수 있습니다. 예, JavaScript와 마크 업을 혼합해서는 안되며 평소처럼 부트 스트랩을 사용하지 않는다는 것을 알고 있지만 이것은 데모 목적으로 만 사용됩니다.

<div class="jumbotron">
    <h1>Multiple parameters test</h1>
    <p class="lead">Click a link below, which will send an HTTP GET request with parameters to a WebAPI controller.</p>
</div>
<script language="javascript">
    function passNothing() {
        $.get("/api/values", function (data) { alert(data); });
    }

    function passHeight(height) {
        $.get("/api/values?height=" + height, function (data) { alert(data); });
    }

    function passWidth(width) {
        $.get("/api/values?width=" + width, function (data) { alert(data); });
    }

    function passHeightAndWidth(height, width) {
        $.get("/api/values?height=" + height + "&width=" + width, function (data) { alert(data); });
    }

    function passDepth(depth) {
        $.get("/api/values?depth=" + depth, function (data) { alert(data); });
    }

    function passHeightAndDepth(height, depth) {
        $.get("/api/values?height=" + height + "&depth=" + depth, function (data) { alert(data); });
    }

    function passWidthAndDepth(width, depth) {
        $.get("/api/values?width=" + width + "&depth=" + depth, function (data) { alert(data); });
    }

    function passHeightWidthAndDepth(height, width, depth) {
        $.get("/api/values?height=" + height + "&width=" + width + "&depth=" + depth, function (data) { alert(data); });
    }

    function passWidthWithPascalCase(width) {
        $.get("/api/values?Width=" + width, function (data) { alert(data); });
    }
</script>
<div class="row">
    <button class="btn" onclick="passNothing();">Pass Nothing</button>
    <button class="btn" onclick="passHeight(5);">Pass Height of 5</button>
    <button class="btn" onclick="passWidth(8);">Pass Width of 8</button>
    <button class="btn" onclick="passHeightAndWidth(3, 7);">Pass Height of 3 and Width of 7</button>
    <button class="btn" onclick="passDepth(2);">Pass Depth of 2</button>
    <button class="btn" onclick="passHeightAndDepth(4, 5);">Pass Height of 4 and Depth of 5</button>
    <button class="btn" onclick="passWidthAndDepth(3, 5);">Pass Width of 3 and Depth of 5</button>
    <button class="btn" onclick="passHeightWidthAndDepth(7, 2, 9);">Pass Height of 7, Width of 2 and Depth of 9</button>
    <button class="btn" onclick="passHeightWidthAndDepth(7, 2, 9);">Pass Height of 7, Width of 2 and Depth of 9</button>
    <button class="btn" onclick="passWidthWithPascalCase(8);">Pass Width of 8, but with Pascal case</button>
</div>

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