Question

基本上我正在进行一场艰苦的战斗，以一种主叫方想要的方式格式化我返回的数据。

我发现我可以＆＃34; response.write＆＃34;数据＆＃34;完美＆＃34;但WebMethod坚持要归还某些东西......即使它是空的。

<System.Web.Services.WebMethod> _
Public Shared Function api_method(ByVal key1 As String) As String

    Dim test As Object = getReturnData(key1)

    Dim json As String = New JavaScriptSerializer().Serialize(test)

    json = Replace(json, """amount"":""", """amount"":")
    json = Replace(json, """,""currency", ",""currency")

    HttpContext.Current.Response.BufferOutput = True
    HttpContext.Current.Response.ContentType = "application/json"
    HttpContext.Current.Response.Write(json)
    HttpContext.Current.Response.Flush()

End Function

有什么方法可以抑制那个null？

Answer 1

将其设为Sub而不是函数：

<System.Web.Services.WebMethod> _
Public Shared Sub api_method(ByVal key1 As String)

    Dim test As Object = getReturnData(key1)

    Dim json As String = New JavaScriptSerializer().Serialize(test)

    json = Replace(json, """amount"":""", """amount"":")
    json = Replace(json, """,""currency", ",""currency")

    HttpContext.Current.Response.BufferOutput = True
    HttpContext.Current.Response.ContentType = "application/json"
    HttpContext.Current.Response.Write(json)
    HttpContext.Current.Response.Flush()

End Sub

是否有可能不从VB / ASP.net 2.0 WebMethod返回任何内容，以便我可以返回自己的数据？

1 个答案: