Question

我需要使用id作为标识符进行get调用。我只使用Angular资源，而不是$ http。我是新手，了解$ http如何与angular配合使用。

角度控制器

  $scope.EmailPdf = function () {
    $http.get('/api/Pdf/{id}').success(function () {
        $scope.PrintPreviewModal();
    });
}

路由

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

api控制器

      public string Get(int id)
        {
        JobDataAdapter adapter = new JobDataAdapter();
        Job job = new Job();
        job = adapter.GetJob(id);
        if (job == null)
        {
            return string.Empty;
        }

        try
        {

错误消息

{"$id":"1","Message":"The request is invalid.","MessageDetail":"The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'System.String Get(Int32)' in 'TexasExterior.Controllers.PdfController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter."}

更新 Web配置

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

控制器

$scope.EmailPdf = function () {
    $http.get('/api/Pdf/', { id: id }).success(function () {
        $scope.PrintPreviewModal();
    });
}

错误消息

ReferenceError：未定义id

控制器

 var id=1    
$scope.EmailPdf = function () {
    $http.get('/api/Pdf?id=id').success(function () {
        $scope.PrintPreviewModal();
});

}

错误消息

{“$ id”：“1”，“Message”：“请求无效。”，“MessageDetail”：“参数字典包含非可空类型'System的参数'id'的空条目。在'TexasExterior.Controllers.PdfController'中，方法'System.String Get（Int32）'的Int32'。可选参数必须是引用类型，可以为空的类型，或者声明为可选参数。“}

控制器

var _id = 1;
var URL = '/api/Pdf';
$scope.EmailPdf = function () {
    $http.get(URL, { id: _id }).success(function () {
        $scope.PrintPreviewModal();
    });
}

错误消息

{"$id":"1","Message":"No HTTP resource was found that matches the request URI 'http://localhost:44301/api/Pdf'.","MessageDetail":"No action was found on the controller 'Pdf' that matches the request."}

Answer 1

怎么样

  $http.get(URL,{id:id})

这是将你的params作为get调用的第二个参数传递为map或string。

Answer 2

您的id未定义

PdfController

将您的配置路线更新为：

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

否则你可以使用不同的语法，即：

 var id=1    
 $scope.EmailPdf = function () {
    $http.get('/api/Pdf?id=id).success(function () {
        $scope.PrintPreviewModal();
    });
}

或

 var _id=1;   
 var URL='/api/Pdf' ;
 $scope.EmailPdf = function () {
   $http.get(URL,{id:_id}).success(function () {
        $scope.PrintPreviewModal();
    });
}

更新

var _id=1;   
var URL='/api/Pdf/' ;
$scope.EmailPdf = function () {
    $http.get(URL,{id:_id}).success(function () {
        $scope.PrintPreviewModal();
    });
}

错误消息

$id: "1"
 Message: "No HTTP resource was found that matches the request URI 'http://localhost:44301/api/Pdf/'."
   MessageDetail: "No action was found on the controller 'Pdf' that matches the request."

其他选项

  var id=1    
$scope.EmailPdf = function () {
    $http.get('/api/Pdf?id=id').success(function () {
        $scope.PrintPreviewModal();
});
}

错误消息

{"$id":"1","Message":"The request is invalid.","MessageDetail":"The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'System.String Get(Int32)' in 'TexasExterior.Controllers.PdfController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter."}

Answer 3

我唯一需要的是

公共字符串Get（int id = 1）

我最初发布的代码不需要更改。谢谢

如何$ http获取带标识符的呼叫

3 个答案: