Question

我有一个用 VB.NET 制作的 webapi ，在这里我可以获取所有数据，按月获取数据，按年获取数据。现在，我尝试添加按数据范围获取数据的功能，在构造函数中，该方法如下所示：

Public Function TotaliDataData(ByVal inizio As String, ByVal fine As String) As IEnumerable(Of Totali)
    Dim SQLConnect As String = "Server=127.0.0.1;Port=3306;Database=00168780351;Uid=root;Pwd=block;"
    Dim cn As New MySqlConnection(SQLConnect)
    Dim cmd As New MySqlCommand("SELECT NPV_TT, NCASSA_TT, DATA_TT, AZZ_TT, SUM(NSC_TT) AS NSC_TT, SUM(VENDITE_TT) AS VENDITE_TT, RESI_TT, ANNULLI_TT, SCONTI_TT, FATTURE_TT, NC_TT FROM totali WHERE DATA_TT BETWEEN '" & inizio & "' AND  '" & fine & "' GROUP BY MONTH(DATA_TT);", cn)
    cn.Open()
    Dim reader As MySqlDataReader = cmd.ExecuteReader()
    Dim totali As List(Of Totali) = ConvertReader(reader)
    cn.Dispose()
    Return totali
End Function

这是我的TotaliController.VB：

Public Class TotaliController
    Inherits ApiController

    Public Function GetTotali() As IEnumerable(Of Totali)
        Dim Totali As Totali = New Totali
        Return Totali.GetTotali()
    End Function

    Public Function GetTotaliByYear(ByVal anno As String) As IEnumerable(Of Totali)
        Dim Totali As Totali = New Totali
        Return Totali.TotaliAnno(anno)
    End Function

    Public Function GetTotaliByMonth(ByVal mese As String) As IEnumerable(Of Totali)
        Dim Totali As Totali = New Totali
        Return Totali.TotaliMese(mese)
    End Function

    Public Function TotaliDataData(ByVal inizio As String, ByVal fine As String) As IEnumerable(Of Totali)
        Dim Totali As Totali = New Totali
        Return Totali.TotaliDataData(inizio, fine)
    End Function

    Public Function GetDetails(ByVal annod As String) As IEnumerable(Of Totali)
        Dim Totali As Totali = New Totali
        Return Totali.GetDetails(annod)
    End Function

End Class

然后，我试图调用localhost:port/api/totali/?inizio=2019-11-10&fine=2019-12-20，但即使在控制器的调试中也没有输入，而如果我尝试通过单个参数按月或年获取数据，则效果很好。

那么我如何将多个参数传递给WebApi？

更新：

当我尝试运行localhost:port/api/totali/?inizio=2019-11-10&fine=2019-12-20时，它将从控制器调用默认的GetTotali（）方法，该方法从数据库返回所有数据。

全局：

Public Class WebApiApplication
    Inherits System.Web.HttpApplication

    Protected Sub Application_Start()
        GlobalConfiguration.Configure(AddressOf WebApiConfig.Register)
        GlobalConfiguration.Configuration.Formatters.
            JsonFormatter.MediaTypeMappings.Add(New RequestHeaderMapping("Accept", "text/html", StringComparison.InvariantCultureIgnoreCase, True, "application/json"))
    End Sub

End Class

WebApiConfig

Public Module WebApiConfig
    Public Sub Register(ByVal config As HttpConfiguration)
        ' Servizi e configurazione dell'API Web

        ' Route dell'API Web
        config.MapHttpAttributeRoutes()

        config.Routes.MapHttpRoute(
            name:="DefaultApi",
            routeTemplate:="api/{controller}/{id}",
            defaults:=New With {.id = RouteParameter.Optional}
        )
    End Sub
End Module

Answer 1

显然，WebApi控制器中的方法名称必须以REST前缀开头，因此将方法TotaliDataData更改为GetTotaliDataData即可解决问题。

如何将多个属性传递给WebApi？

1 个答案: