小贝子编程

使用C＃ASP.NET MVC调用REST API



背景：我有这个学校项目，我想使用https://developer.edamam.com/edamam-docs-recipe制作食谱Web应用程序-api。

我到目前为止所做的：

  1. 在Postman中提出了一个请求，并获取JSON数据并使用JSON2CSHARP.com生成C＃
namespace EdamaAPI.Models
{
    public class Rootobject
    {
        public string q { get; set; }
        public int from { get; set; }
        public int to { get; set; }
        public Params _params { get; set; }
        public bool more { get; set; }
        public int count { get; set; }
        public Hit[] hits { get; set; }
    }
    public class Params
    {
        public object[] sane { get; set; }
        public string[] q { get; set; }
        public string[] app_key { get; set; }
        public string[] health { get; set; }
        public string[] from { get; set; }
        public string[] to { get; set; }
        public string[] calories { get; set; }
        public string[] app_id { get; set; }
    }
    public class Hit
    {
        public Recipe recipe { get; set; }
        public bool bookmarked { get; set; }
        public bool bought { get; set; }
    }
    public class Recipe
    {
        public string uri { get; set; }
        public string label { get; set; }
        public string image { get; set; }
        public string source { get; set; }
        public string url { get; set; }
        public string shareAs { get; set; }
        public float yield { get; set; }
        public string[] dietLabels { get; set; }
        public string[] healthLabels { get; set; }
        public object[] cautions { get; set; }
        public string[] ingredientLines { get; set; }
        public Ingredient[] ingredients { get; set; }
        public float calories { get; set; }
        public float totalWeight { get; set; }
        public Totalnutrients totalNutrients { get; set; }
        public Totaldaily totalDaily { get; set; }
        public Digest[] digest { get; set; }
    }
    public class Totalnutrients
    {
        public ENERC_KCAL ENERC_KCAL { get; set; }
        public FAT FAT { get; set; }
        public FASAT FASAT { get; set; }
        public FATRN FATRN { get; set; }
        public FAMS FAMS { get; set; }
        public FAPU FAPU { get; set; }
        public CHOCDF CHOCDF { get; set; }
        public SUGAR SUGAR { get; set; }
        public PROCNT PROCNT { get; set; }
        public CHOLE CHOLE { get; set; }
        public NA NA { get; set; }
        public CA CA { get; set; }
        public MG MG { get; set; }
        public K K { get; set; }
        public FE FE { get; set; }
        public ZN ZN { get; set; }
        public P P { get; set; }
        public VITA_RAE VITA_RAE { get; set; }
        public VITC VITC { get; set; }
        public THIA THIA { get; set; }
        public RIBF RIBF { get; set; }
        public NIA NIA { get; set; }
        public VITB6A VITB6A { get; set; }
        public FOLDFE FOLDFE { get; set; }
        public FOLFD FOLFD { get; set; }
        public VITB12 VITB12 { get; set; }
        public VITD VITD { get; set; }
        public TOCPHA TOCPHA { get; set; }
        public VITK1 VITK1 { get; set; }
        public FIBTG FIBTG { get; set; }
    }
    public class ENERC_KCAL
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class FAT
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class FASAT
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class FATRN
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class FAMS
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class FAPU
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class CHOCDF
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class SUGAR
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class PROCNT
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class CHOLE
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class NA
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class CA
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class MG
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class K
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class FE
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class ZN
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class P
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class VITA_RAE
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class VITC
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class THIA
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class RIBF
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class NIA
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class VITB6A
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class FOLDFE
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class FOLFD
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class VITB12
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class VITD
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class TOCPHA
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class VITK1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class FIBTG
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class Totaldaily
    {
        public ENERC_KCAL1 ENERC_KCAL { get; set; }
        public FAT1 FAT { get; set; }
        public FASAT1 FASAT { get; set; }
        public CHOCDF1 CHOCDF { get; set; }
        public PROCNT1 PROCNT { get; set; }
        public CHOLE1 CHOLE { get; set; }
        public NA1 NA { get; set; }
        public CA1 CA { get; set; }
        public MG1 MG { get; set; }
        public K1 K { get; set; }
        public FE1 FE { get; set; }
        public ZN1 ZN { get; set; }
        public P1 P { get; set; }
        public VITA_RAE1 VITA_RAE { get; set; }
        public VITC1 VITC { get; set; }
        public THIA1 THIA { get; set; }
        public RIBF1 RIBF { get; set; }
        public NIA1 NIA { get; set; }
        public VITB6A1 VITB6A { get; set; }
        public FOLDFE1 FOLDFE { get; set; }
        public VITB121 VITB12 { get; set; }
        public VITD1 VITD { get; set; }
        public TOCPHA1 TOCPHA { get; set; }
        public VITK11 VITK1 { get; set; }
        public FIBTG1 FIBTG { get; set; }
    }
    public class ENERC_KCAL1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class FAT1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class FASAT1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class CHOCDF1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class PROCNT1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class CHOLE1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class NA1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class CA1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class MG1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class K1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class FE1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class ZN1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class P1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class VITA_RAE1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class VITC1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class THIA1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class RIBF1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class NIA1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class VITB6A1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class FOLDFE1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class VITB121
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class VITD1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class TOCPHA1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class VITK11
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class FIBTG1
    {
        public string label { get; set; }
        public float quantity { get; set; }
        public string unit { get; set; }
    }
    public class Ingredient
    {
        public string text { get; set; }
        public float weight { get; set; }
    }
    public class Digest
    {
        public string label { get; set; }
        public string tag { get; set; }
        public string schemaOrgTag { get; set; }
        public float total { get; set; }
        public bool hasRDI { get; set; }
        public float daily { get; set; }
        public string unit { get; set; }
        public Sub[] sub { get; set; }
    }
    public class Sub
    {
        public string label { get; set; }
        public string tag { get; set; }
        public string schemaOrgTag { get; set; }
        public float total { get; set; }
        public bool hasRDI { get; set; }
        public float daily { get; set; }
        public string unit { get; set; }
    }
}
  1. 发送GET请求以访问数据并进行估算。
public class RecipeController : Controller
{           
    public async Task<ActionResult> Index()
    {
        List<Recipe> RecInfo = new List<Recipe>();
        using (var client = new HttpClient())
        {
            //Passing service base url  
            client.BaseAddress = new Uri("https://api.edamam.com");
            client.DefaultRequestHeaders.Clear();
            //Define request data format  
            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
            //Sending request to find web api REST service resource GetAllEmployees using HttpClient  
            HttpResponseMessage Res = await client.GetAsync("api.edamam.com/search?q=chicken&app_id=a88093f8&app_key=4513de36c431f9936462ef4391f631e4&from=0&to=3&calories=gte%20591,%20lte%20722&health=alcohol-free");
            //Checking the response is successful or not which is sent using HttpClient  
            if (Res.IsSuccessStatusCode)
            {
                //Storing the response details recieved from web api   
                var name = Res.Content.ReadAsStringAsync().Result;
                //Deserializing the response recieved from web api and storing into the Employee list  
                RecInfo = JsonConvert.DeserializeObject<List<Recipe>>(name); 
            }
            //returning the employee list to view  
            return View(RecInfo);
        }
    }
}
  1. 带有视觉工作室的自动化视图。
@model IEnumerable<EdamaAPI.Models.Recipe>
@{
    ViewBag.Title = "Index";
}
<h2>Index</h2>
<p>
    @Html.ActionLink("Create New", "Create")
</p>
<table class="table">
    <tr>
        <th>
            @Html.DisplayNameFor(model => model.uri)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.label)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.image)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.source)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.url)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.shareAs)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.yield)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.calories)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.totalWeight)
        </th>
        <th></th>
    </tr>
@foreach (var item in Model)
{
    <tr>
        <td>
            @Html.DisplayFor(modelItem => item.uri)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.label)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.image)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.source)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.url)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.shareAs)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.yield)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.calories)
        </td>
        <td>
           @Html.DisplayFor(modelItem => item.totalWeight)
       </td>
       <td>
           @Html.ActionLink("Edit", "Edit", new { /* id=item.PrimaryKey */ }) |
           @Html.ActionLink("Details", "Details", new { /* id=item.PrimaryKey */ }) |
           @Html.ActionLink("Delete", "Delete", new { /* id=item.PrimaryKey */               })
       </td>
   </tr>
}  
</table>

当我尝试运行项目时，发生此错误：

传递到字典中的模型项是'edamaapi.models.recipe'的类型，但是该词典需要类型的模型项'system.collections.generic.eneric.ienumobles.1 [edamaapi.models.models.ingredient]'。<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

堆栈跟踪：

 [invalidoperationException：传递到字典中的模型项是'edamaapi.models.recipe'的类型，但是该词典需要一个类型的模型项'system.collections.generic.generic.eneric.ienumoserth'1 [edamaapi.models.models.models.singredient]'。]   system.web.mvc.viewdaticticary`1.setModel（对象值） 175   system.web.mvc.viewdatadicticationary..ctor（viewDatadictionary dictionary） 107   system.web.mvc.webviewpage`1.setViewData（viewDatadictionary ViewData） 49   system.web.mvc.razorview.renderview（ViewContext ViewContext，Textwriter Writer，Object实例） 99   system.web.mvc.buildmanagercompiledview.render（ViewContext ViewContext，Textwriter Writer） 107   system.web.mvc.viewresultbase.executeresult（controllerContext上下文） 291   system.web.mvc.controllerActionInvoker.invokeactionResult（contranceerContext ControllerContext，ActionResresult ActionResult） 13   system.web.mvc.controllerActionInVoker.invokeactionResultFilterRecursiverVorsiver（IList`1滤波器，INT32 FilterIndex，resultexecutingContextProvontext，contranceErcontext contranceptext，contranceerContext contranceerContext，Action Resresult ActionResult） 56） 56   system.web.mvc.controllerActionInvoker.invokeActionResultFilterRecursiveriver（Ilist'1滤波器，INT32 FilterIndex，resultExeCutingContextProvontext，contranceerContext contranceptext，contranceerContext contranceercontext，ActionRessult action RestionResult） 420） 420） 420   system.web.mvc.controllerActionInVoker.invokeactionResultWithFilters（contranceerContext ControllEctext，Ilist'1滤波器，ActionResult ActionResult） 52   system.web.mvc.async.c__displayclass2b.b__1c（） 173   system.web.mvc.async.c__displayclass21.b__1e（iasyncresult asyncresult） 100   system.web.mvc.Async.WrappedAsyncresult`1.CallendDelegate（iasyncresult asyncresult） 10   system.web.mvc.async.wrappedasyncresultbase`1.end（） 49   system.web.mvc.async.asynccontrollerActionInVoker.EndinVokeaction（iasyncresult asyncresult） 27   system.web.mvc.controller.b__1d（iasyncresult asyncresult，executecorestate innerstate） 13   system.web.mvc.Async.wrappedAsyncVoid`1.CallendDelegate（iasyncresult asyncresult） 29   system.web.mvc.async.wrappedasyncresultbase`1.end（） 49   system.web.mvc.controller.endexecutecore（iasyncresult asyncresult） 36   system.web.mvc.controller.b__15（iasyncresult asyncresult，控制器控制器） 12   system.web.mvc.async.warpapedasyncvoid`1.callendDelegate（iasyncresult asyncresult） 22   system.web.mvc.async.wrappedasyncresultbase`1.end（） 49   system.web.mvc.controller.endexecute（iasyncresult asyncresult） 26   system.web.mvc.controller.system.web.mvc.async.iasynccontroller.endexecute（iasyncresult asyncresult） 10   system.web.mvc.mvchandler.b__5（iasyncresult asyncresult，processRequeststate innerstate） 21   system.web.mvc.Async.wrappedAsyncVoid`1.CallendDelegate（iasyncresult asyncresult） 29   system.web.mvc.async.wrappedasyncresultbase`1.end（） 49   system.web.mvc.mvchandler.endprocessrequest（iasyncresult asyncresult） 28   system.web.mvc.mvchandler.system.web.ihttpasynchandler.endprocessrequest（iasyncresult结果） 9   system.web.callhandlerexecutionstep.onasynchandlecompletion（iasyncresult ar） 129

我一直在Google上搜索几个小时，没有运气，我现在可以真正使用指导手！如果我忘记了任何信息，请告诉我，我会立即解决这些信息。

例外说明了一切：

查看异常

传递到字典中的模型项是'edamaapi.models.recipe'的类型，但是该词典需要一个类型的模型项'system.collections.generic.generic.eneric.ienumoserth'1 [edamaapi.models.models.ingredient]'。

查看模型：

@model IEnumerable<EdamaAPI.Models.Recipe>

当视图所需的成分模型时，您将食谱模型传递给视图。

这将有效：

public class RecipeController : Controller
    {
        public async Task<ActionResult> Index()
        {
            List<Ingredient> RecInfo = new List<Ingredient>();
            using (var client = new HttpClient())
            {
                //Passing service base url  
                client.BaseAddress = new Uri("https://api.edamam.com");
                client.DefaultRequestHeaders.Clear();
                //Define request data format  
                client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
                //Sending request to find web api REST service resource GetAllEmployees using HttpClient  
                HttpResponseMessage Res = await client.GetAsync("api.edamam.com/search?q=chicken&app_id=a88093f8&app_key=4513de36c431f9936462ef4391f631e4&from=0&to=3&calories=gte%20591,%20lte%20722&health=alcohol-free");
                //Checking the response is successful or not which is sent using HttpClient  
                if (Res.IsSuccessStatusCode)
                {
                    //Storing the response details recieved from web api   
                    var name = Res.Content.ReadAsStringAsync().Result;
                    //Deserializing the response recieved from web api and storing into the Employee list  
                    RecInfo = JsonConvert.DeserializeObject<List<Ingredient>>(name);
                }
                //returning the employee list to view  
                return View(RecInfo);
            }
        }
}

，但这不是您需要的，因为您需要配方模型。更改您的操作以接受通用食谱列表。

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