我如何返回http状态代码VB.NET rest API [英] How do I return http status code VB.NET rest API

问题描述

我正在为移动应用开发者构建一个rest API。我希望他们每次调用我的API时首先检查返回的状态是否为200或其他。所以我用Google搜索并发现此链接正在处理其余API asp.net的状态代码：

创建Web API响应 [ ^ ]

但是我的Rest API已经构建了115个webmethods的另一种方式，我无法改变我的所有方法并使它们像这样。下面是我的web方法的构建示例：

I am building a rest API to mobile apps developers. I want them each time they call my APIs to check first if the returned status is 200 or something else. So I googled and found this link which is handling status codes of rest API asp.net:
create Web API response[^]
But my Rest API is already built an another way with 115 webmethods and I cannot change all my methods and make them like this. Below is an example of how my webmethods are built:

Public Function InfoAndTerms(ByVal Lang As String) As Information() Implements IService.InfoAndTerms

Dim result() As Information    
Try
    ' Do something and fill result
Catch ex As Exception
    ' Do something else
Finally  
        InfoAndTerms = result
End Try   

End Function

其中'InfoAndTerms'是'DataTypes'模块中的结构



所以我的问题是：是否有任何其他方法返回http状态代码与对象作为响应？

感谢您的帮助



我尝试过的事情：



我试过这个：

Where 'InfoAndTerms' is a Structure in a 'DataTypes' module

So my question is: isn't there any other way to return http status code with object as response?
Your helps are appreciated

What I have tried:

I have tried this :

Public Function InfoAndTerms(ByVal Lang As String) As Information() Implements IService.InfoAndTerms

Dim result() As Information    
Try
    ' Do something and fill result
Catch ex As Exception
    Throw New System.Web.HttpException(500, "Error - InfoAndTerms")
Finally  
        InfoAndTerms = result
End Try   

End Function

但是当我测试这种方法时，我得到状态400而不是500.那么可能是什么问题？

But when I tested this method I got status 400 instead of 500. SO what could be the problem?

推荐答案

最后我找到了一个解决方案：



根据这个链接我们只需要使用'WebFaultException'来改变http状态。现在还有一个很好的方法来返回处理的错误：

Finally I found a solution:

According to this link we just have to use 'WebFaultException' which will change the http status. Now there is also a nice method to return the handled error :

Public Function TestMethod2(ByVal name As String) As String Implements IService.TestMethod2

        If name = "" Then

            Dim str As New ErrMessage
            str.intErr = 1
            str.strErrMessage = "bla bla bla"

            Throw New WebFaultException(Of ErrMessage)(str, HttpStatusCode.BadRequest)

        End If

        Return name

    End Function

然后状态将改变，返回的对象将是一个错误。我个人更喜欢返回对象错误而不是其他任何东西...



干杯：）

Then the status will change and the returned object will be an error. Personally I prefer to return object error instead of anything else ...

Cheers :)

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