在 ASP.Net Web Api 2 控制器中为 angularjs $http.get 使用自定义方法的替代方法

Question

我正在尝试使用 asp.net MVC 5、WEB API 2 和 AngularJS 学习和构建 Web 应用程序。我已经使用自定义 CRUD 操作构建了一个良好的工作应用程序。现在我想完全控制 web api 控制器，以便我可以根据我的要求返回数据。比如我想从下面的代码中获取返回的数据-

        string today = DateTime.Now.ToString("dd/MM/yyyy");
        var appointment1 = from prescription in db.Prescriptions
                           where prescription.appointment == "15/01/2015"
                           from consultation in prescription.Consultations

                           select new
                           {
                               ID = prescription.id,
                               Name = prescription.patient_name,
                               Contact = prescription.patient_contact,
                               Task = prescription.next_task
                           };

        var appointment2 = from consultation in db.Consultations
                           where consultation.next_date == "15/01/2015"
                           select new
                           {
                               ID = consultation.Prescription.id,
                               Name = consultation.Prescription.patient_name,
                               Contact = consultation.Prescription.patient_contact,
                               Task = consultation.next_task
                           };

        var finalAppointments = appointment1.Concat(appointment2);
        return finalAppointments;

我有三个问题： 1) 除了在我的 web api 控制器中创建自定义方法之外，还有什么方法可以检索返回的数据？ 2) 我可以通过稍微修改一下使用默认方法吗？如果是这样，那怎么办？ 3) 如果我应该使用自定义方法，返回数据类型的方法结构是什么？

Answer 1

它非常简单。

注意：我没有正确理解您的第一个问题。对于 2que 和 3que....

假设我在 Web api 2，MVC5 中使用 Get 方法（我希望您对 Web api 中的 HTTP 方法很清楚） 它收集所需的数据（返回给 angularjs）..... 现在取决于您希望将多少对象发送回客户端。

IHttpActionResult 将是您在所有 HTTP 方法中的返回类型，因为 IHttpActionResult 通过 Web api 发送状态代码......

例如;

假设我有 PrescriptionsController.cs。所以在里面。

[HttpGet]
public IHttpActionResult Get()
{
      var appointment1 = from prescription in db.Prescriptions
                       where prescription.appointment == "15/01/2015"
                       from consultation in prescription.Consultations

                       select new
                       {
                           ID = prescription.id,
                           Name = prescription.patient_name,
                           Contact = prescription.patient_contact,
                           Task = prescription.next_task
                       };

    var appointment2 = from consultation in db.Consultations
                       where consultation.next_date == "15/01/2015"
                       select new
                       {
                           ID = consultation.Prescription.id,
                           Name = consultation.Prescription.patient_name,
                           Contact = consultation.Prescription.patient_contact,
                           Task = consultation.next_task
                       };

    var finalAppointments = appointment1.Concat(appointment2);
   // return finalAppointments;    //rather I'd use below line...

      return Ok(finalAppointments); // here your are concatenating two objects and want to send single object only.

}

假设我想分别发送两个对象... 然后使用以下方式，

[HttpGet]
//public IHttpActionResult Get()
public dynamic Get()
{
      var appointment1 = from prescription in db.Prescriptions
                       where prescription.appointment == "15/01/2015"
                       from consultation in prescription.Consultations

                       select new
                       {
                           ID = prescription.id,
                           Name = prescription.patient_name,
                           Contact = prescription.patient_contact,
                           Task = prescription.next_task
                       };

    var appointment2 = from consultation in db.Consultations
                       where consultation.next_date == "15/01/2015"
                       select new
                       {
                           ID = consultation.Prescription.id,
                           Name = consultation.Prescription.patient_name,
                           Contact = consultation.Prescription.patient_contact,
                           Task = consultation.next_task
                       };

    //var finalAppointments = appointment1.Concat(appointment2);
   // return finalAppointments;    //rather I'd use below line...

   //   return Ok(finalAppointments); // here your are concatenating two objects.

   return new {appointment1 ,appointment2 }; // you can send multiple objects...

}

如有任何疑问，请随时提出。