Asp.net VB使用SOAP&；用于web服务的XML

我正在尝试在VB应用程序中对web服务执行XML Soap调用。我可以使用SoapUI和XMLSpy实现这一点，这让我相信XML是正确的。当我执行代码时，我得到一个错误500服务器内部错误。这让我相信我在代码中遗漏了一些东西，而不是在XML中。我确实尝试添加一个服务器引用，但这似乎也没有帮助

我将此视频用作参考： 我的代码如下所示：

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

    Dim SoapByte() As Byte
    Dim SoapStr As String = ""
    SoapStr = SoapStr & "<?xml version=""1.0"" encoding=""UTF-8""?>"
    SoapStr = SoapStr & "<soapenv:Envelope xmlns:soapenv=""http://schemas.xmlsoap.org/soap/envelope/"" xmlns:web=""http://webservice.lme.com"">"
    SoapStr = SoapStr & "<soapenv:Header/>"
    SoapStr = SoapStr & "<soapenv:Body>"
    SoapStr = SoapStr & "<web:getCustomerRate>"
    SoapStr = SoapStr & "<web:criIn>"
    SoapStr = SoapStr & "<web:protectFreeze>Y</web:protectFreeze>"
    SoapStr = SoapStr & "<web:accountNumber>226744</web:accountNumber>"
    SoapStr = SoapStr & "<web:callConsgBfrDel>No</web:callConsgBfrDel>"
    SoapStr = SoapStr & "<web:callforAppmnt>No</web:callforAppmnt>"
    SoapStr = SoapStr & "<web:callforCarrierConv>No</web:callforCarrierConv>"
    SoapStr = SoapStr & "<web:COD>N</web:COD>"
    SoapStr = SoapStr & "<web:CODAmount>0</web:CODAmount>"
    SoapStr = SoapStr & "<web:CODPayTerms>0</web:CODPayTerms>"
    SoapStr = SoapStr & "<!--1 or more repetitions:-->"
    SoapStr = SoapStr & "<web:commLines>"
    SoapStr = SoapStr & "<web:commClass>100</web:commClass>"
    SoapStr = SoapStr & "<web:commweight>1000</web:commweight>"
    SoapStr = SoapStr & "</web:commLines>"
    SoapStr = SoapStr & "<web:customerType>S</web:customerType>"
    SoapStr = SoapStr & "<web:destCity>Lake City</web:destCity>"
    SoapStr = SoapStr & "<web:destState>MN</web:destState>"
    SoapStr = SoapStr & "<web:destZip>55041</web:destZip>"
    SoapStr = SoapStr & "<web:fullValueCoverage>No</web:fullValueCoverage>"
    SoapStr = SoapStr & "<web:fvcAmount>0</web:fvcAmount>"
    SoapStr = SoapStr & "<web:hazMat>N</web:hazMat>"
    SoapStr = SoapStr & "<web:insideDel>No</web:insideDel>"
    SoapStr = SoapStr & "<web:insidePckup>No</web:insidePckup>"
    SoapStr = SoapStr & "<web:lftgtReqDel>No</web:lftgtReqDel>"
    SoapStr = SoapStr & "<web:lftgtRqrdPckup>No</web:lftgtRqrdPckup>"
    SoapStr = SoapStr & "<web:lmtAccessDel>No</web:lmtAccessDel>"
    SoapStr = SoapStr & "<web:lmtdAccessPckup>No</web:lmtdAccessPckup>"
    SoapStr = SoapStr & "<web:origCity>Burnsville</web:origCity>"
    SoapStr = SoapStr & "<web:origState>MN</web:origState>"
    SoapStr = SoapStr & "<web:origZip>55337</web:origZip>"
    SoapStr = SoapStr & "<web:palletCount>1</web:palletCount>"
    SoapStr = SoapStr & "<web:palletType>PALLETS</web:palletType>"
    SoapStr = SoapStr & "<web:password></web:password>"
    SoapStr = SoapStr & "<web:paymentType>P</web:paymentType>"
    SoapStr = SoapStr & "<web:prvtRsdncDel>No</web:prvtRsdncDel>"
    SoapStr = SoapStr & "<web:prvtRsdncPckup>No</web:prvtRsdncPckup>"
    SoapStr = SoapStr & "<web:shipDate>10/02/2017</web:shipDate>"
    SoapStr = SoapStr & "<web:usePalletPricing>No</web:usePalletPricing>"
    SoapStr = SoapStr & "<web:username></web:username>"
    SoapStr = SoapStr & "</web:criIn>"
    SoapStr = SoapStr & "</web:getCustomerRate>"
    SoapStr = SoapStr & "</soapenv:Body>"
    SoapStr = SoapStr & "</soapenv:Envelope>"
    goUrl.Text = "Http://www.lme4me.com:80/webapp/CustomPricing/services/CRIMethods"

    Try

        SoapByte = Encoding.UTF8.GetBytes(SoapStr)

        'Create initial request
        Dim request As HttpWebRequest = HttpWebRequest.Create(goUrl.Text)
        request.Proxy = Nothing 'Speeds up the request by setting the proxies to nothing
        request.UserAgent = "Test" 'We should not be worried about this.
        request.PreAuthenticate = False
        request.Method = "POST"
        request.ContentType = "Text/ Xml;charset=UTF-8"
        'request.Headers.Add("SOAPAction", "http://www.lme4me.com:80/webapp/CustomPricing/services/CRIMethods/getCustomerRate")
        request.Headers.Add("SOAPAction", "getCustomerRate")

        'request.ContentLength = 2215
        request.Host = "www.lme4me.com:80"
        'request.Connection = "Keep-Alive"
        request.UserAgent = "Apache-HttpClient / 4.1.1 (java 1.5)"

        'Create the Response and reader
        Dim response As HttpWebResponse = request.GetResponse()
        Dim responseHdr As String = request.GetResponse.ResponseUri.ToString()
        Dim responseStream As IO.Stream = response.GetResponseStream()
        'Create a new Stream reader
        Dim streamReader As New System.IO.StreamReader(responseStream)
        Dim Data As String = streamReader.ReadToEnd

        streamReader.Close()

        ' Display the Data on the screen
        UrlResponseText.Text = Data

    Catch ex As WebException

        MsgBox("Inproper input: " + Err.Description)
        goUrl.Text = ""
        If (ex.Status = WebExceptionStatus.ProtocolError) Then
            Dim error1 As String = New IO.StreamReader(ex.Response.GetResponseStream()).ReadToEnd()
            MsgBox("Rest of Error: " + error1.ToString())
        End If
    End Try

End Sub

Private Sub goUrl_TextChanged(sender As Object, e As EventArgs) Handles goUrl.TextChanged

End Sub

 SoapByte = System.Text.Encoding.UTF8.GetBytes(SoapStr)

        'Create initial request
        Request = WebRequest.Create(goUrl.Text)
        Request.Headers.Add("SOAPAction", "http://www.lme4me.com:80/webapp/CustomPricing/services/CRIMethods/getCustomerRate")

        Request.ContentType = "Text/ Xml; charset=UTF-8"
        Request.ContentLength = SoapByte.Length
        Request.Method = "POST"

        DataStream = Request.GetRequestStream()
        DataStream.Write(SoapByte, 0, SoapByte.Length)
        DataStream.Close()

        Response = Request.GetResponse()
        DataStream = Response.GetResponseStream()
        Reader = New StreamReader(DataStream)
        Dim Data As String = Reader.ReadToEnd()

        DataStream.Close()
        Reader.Close()
        Response.Close()

        ' Display the Data on the screen
        UrlResponseText.Text = Data

Private子按钮1\u单击（发送者作为对象，e作为事件参数）处理按钮1。单击
Dim SoapByte（）作为字节
Dim SoapStr As String=“”
SoapStr=SoapStr&“”
SoapStr=SoapStr&“”
SoapStr=SoapStr&“”
SoapStr=SoapStr&“”
SoapStr=SoapStr&“”
SoapStr=SoapStr&“”
SoapStr=SoapStr&“Y”
SoapStr=SoapStr&“226744”
SoapStr=SoapStr&“否”
SoapStr=SoapStr&“否”
SoapStr=SoapStr&“否”
SoapStr=SoapStr&“N”
SoapStr=SoapStr&“0”
SoapStr=SoapStr&“0”
SoapStr=SoapStr&“”
SoapStr=SoapStr&“”
SoapStr=SoapStr&“100”
SoapStr=SoapStr&“1000”
SoapStr=SoapStr&“”
SoapStr=SoapStr&“S”
SoapStr=SoapStr&“湖城”
SoapStr=SoapStr&“MN”
SoapStr=SoapStr&“55041”
SoapStr=SoapStr&“否”
SoapStr=SoapStr&“0”
SoapStr=SoapStr&“N”
SoapStr=SoapStr&“否”
SoapStr=SoapStr&“否”
SoapStr=SoapStr&“否”
SoapStr=SoapStr&“否”
SoapStr=SoapStr&“否”
SoapStr=SoapStr&“否”
SoapStr=SoapStr&“伯恩斯维尔”
SoapStr=SoapStr&“MN”
SoapStr=SoapStr&“55337”
SoapStr=SoapStr&“1”
SoapStr=SoapStr和“托盘”
SoapStr=SoapStr&“”
SoapStr=SoapStr&“P”
SoapStr=SoapStr&“否”
SoapStr=SoapStr&“否”
SoapStr=SoapStr&“10/02/2017”
SoapStr=SoapStr&“否”
SoapStr=SoapStr&“”
SoapStr=SoapStr&“”
SoapStr=SoapStr&“”
SoapStr=SoapStr&“”
SoapStr=SoapStr&“”
goul.Text=“Http://www.lme4me.com:80/webapp/CustomPricing/services/CRIMethods"
尝试
SoapByte=Encoding.UTF8.GetBytes（SoapStr）
'创建初始请求
Dim请求作为HttpWebRequest=HttpWebRequest.Create（goul.Text）
request.Proxy=Nothing'通过将代理设置为Nothing来加速请求
request.UserAgent=“Test”'我们不应该为此担心。
request.PreAuthenticate=False
request.Method=“POST”
request.ContentType=“Text/Xml；charset=UTF-8”
'request.Headers.Add（“SOAPAction”http://www.lme4me.com:80/webapp/CustomPricing/services/CRIMethods/getCustomerRate")
request.Headers.Add（“SOAPAction”、“getCustomerRate”）
'request.ContentLength=2215
request.Host=“www.lme4me.com:80”
'request.Connection=“保持活动状态”
request.UserAgent=“Apache HttpClient/4.1.1（java 1.5）”
'创建响应和读取器
Dim响应为HttpWebResponse=request.GetResponse（）
Dim RESPOSSEHDR As String=request.GetResponse.ResponseUri.ToString（）
Dim RESPOSSESTREAM As IO.Stream=response.GetResponseStream（）
'创建新的流读取器
Dim streamReader作为新的System.IO.streamReader（responseStream）
Dim数据为字符串=streamReader.ReadToEnd
streamReader.Close（）
'在屏幕上显示数据
UrlResponseText.Text=数据
捕获ex作为WebException
MsgBox（“输入正确：”+错误说明）
goul.Text=“”
如果（ex.Status=WebExceptionStatus.ProtocolError），则
Dim error1 As String=New IO.StreamReader（ex.Response.GetResponseStream（））.ReadToEnd（）
MsgBox（“其余错误：+error1.ToString（））
如果结束
结束尝试
端接头
私有子goul_TextChanged（发送方作为对象，e作为事件args）处理goul.TextChanged
端接头

末级

---

在visualbasic/VB中，我似乎找不到太多的帮助

我看不到您的代码中实际使用soapStr/soapByte的地方

下面是我们正在使用的一些通用代码：

Friend Function PostWebservice(soapAction As String, xmlBody As String) As XmlDocument

    Dim uTF8Encoding As New UTF8Encoding()
    Dim bytes As Byte() = uTF8Encoding.GetBytes(xmlBody)

    Dim requestUriString As String = "Whatever.com"

    Dim httpWebRequest As HttpWebRequest = CType(WebRequest.Create(requestUriString), HttpWebRequest)
    httpWebRequest.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip, deflate")
    httpWebRequest.Headers.Add("SOAPAction", soapAction)
    httpWebRequest.Method = "POST"
    httpWebRequest.ContentType = "text/xml; charset=utf-8"
    httpWebRequest.ContentLength = CLng(bytes.Length)

    Dim requestStream As Stream = httpWebRequest.GetRequestStream()
    requestStream.Write(bytes, 0, bytes.Length)
    requestStream.Close()

    Dim httpWebResponse As HttpWebResponse = CType(httpWebRequest.GetResponse(), HttpWebResponse)
    Dim streamReader As StreamReader = New StreamReader(httpWebResponse.GetResponseStream(), uTF8Encoding)

    Dim xmlDocument As New XmlDocument()
    xmlDocument.LoadXml(streamReader.ReadToEnd())
    httpWebResponse.Close()
    Return xmlDocument

End Function

---

我发现我没有传递SoapStr，需要添加一些额外的代码来编写它

DataStream=Request.GetRequestStream（） DataStream.Write（SoapByte，0，SoapByte.Length） DataStream.Close（）

现在代码如下所示：

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

    Dim SoapByte() As Byte
    Dim SoapStr As String = ""
    SoapStr = SoapStr & "<?xml version=""1.0"" encoding=""UTF-8""?>"
    SoapStr = SoapStr & "<soapenv:Envelope xmlns:soapenv=""http://schemas.xmlsoap.org/soap/envelope/"" xmlns:web=""http://webservice.lme.com"">"
    SoapStr = SoapStr & "<soapenv:Header/>"
    SoapStr = SoapStr & "<soapenv:Body>"
    SoapStr = SoapStr & "<web:getCustomerRate>"
    SoapStr = SoapStr & "<web:criIn>"
    SoapStr = SoapStr & "<web:protectFreeze>Y</web:protectFreeze>"
    SoapStr = SoapStr & "<web:accountNumber>226744</web:accountNumber>"
    SoapStr = SoapStr & "<web:callConsgBfrDel>No</web:callConsgBfrDel>"
    SoapStr = SoapStr & "<web:callforAppmnt>No</web:callforAppmnt>"
    SoapStr = SoapStr & "<web:callforCarrierConv>No</web:callforCarrierConv>"
    SoapStr = SoapStr & "<web:COD>N</web:COD>"
    SoapStr = SoapStr & "<web:CODAmount>0</web:CODAmount>"
    SoapStr = SoapStr & "<web:CODPayTerms>0</web:CODPayTerms>"
    SoapStr = SoapStr & "<!--1 or more repetitions:-->"
    SoapStr = SoapStr & "<web:commLines>"
    SoapStr = SoapStr & "<web:commClass>100</web:commClass>"
    SoapStr = SoapStr & "<web:commweight>1000</web:commweight>"
    SoapStr = SoapStr & "</web:commLines>"
    SoapStr = SoapStr & "<web:customerType>S</web:customerType>"
    SoapStr = SoapStr & "<web:destCity>Lake City</web:destCity>"
    SoapStr = SoapStr & "<web:destState>MN</web:destState>"
    SoapStr = SoapStr & "<web:destZip>55041</web:destZip>"
    SoapStr = SoapStr & "<web:fullValueCoverage>No</web:fullValueCoverage>"
    SoapStr = SoapStr & "<web:fvcAmount>0</web:fvcAmount>"
    SoapStr = SoapStr & "<web:hazMat>N</web:hazMat>"
    SoapStr = SoapStr & "<web:insideDel>No</web:insideDel>"
    SoapStr = SoapStr & "<web:insidePckup>No</web:insidePckup>"
    SoapStr = SoapStr & "<web:lftgtReqDel>No</web:lftgtReqDel>"
    SoapStr = SoapStr & "<web:lftgtRqrdPckup>No</web:lftgtRqrdPckup>"
    SoapStr = SoapStr & "<web:lmtAccessDel>No</web:lmtAccessDel>"
    SoapStr = SoapStr & "<web:lmtdAccessPckup>No</web:lmtdAccessPckup>"
    SoapStr = SoapStr & "<web:origCity>Burnsville</web:origCity>"
    SoapStr = SoapStr & "<web:origState>MN</web:origState>"
    SoapStr = SoapStr & "<web:origZip>55337</web:origZip>"
    SoapStr = SoapStr & "<web:palletCount>1</web:palletCount>"
    SoapStr = SoapStr & "<web:palletType>PALLETS</web:palletType>"
    SoapStr = SoapStr & "<web:password></web:password>"
    SoapStr = SoapStr & "<web:paymentType>P</web:paymentType>"
    SoapStr = SoapStr & "<web:prvtRsdncDel>No</web:prvtRsdncDel>"
    SoapStr = SoapStr & "<web:prvtRsdncPckup>No</web:prvtRsdncPckup>"
    SoapStr = SoapStr & "<web:shipDate>10/02/2017</web:shipDate>"
    SoapStr = SoapStr & "<web:usePalletPricing>No</web:usePalletPricing>"
    SoapStr = SoapStr & "<web:username></web:username>"
    SoapStr = SoapStr & "</web:criIn>"
    SoapStr = SoapStr & "</web:getCustomerRate>"
    SoapStr = SoapStr & "</soapenv:Body>"
    SoapStr = SoapStr & "</soapenv:Envelope>"
    goUrl.Text = "Http://www.lme4me.com:80/webapp/CustomPricing/services/CRIMethods"

    Try

        SoapByte = Encoding.UTF8.GetBytes(SoapStr)

        'Create initial request
        Dim request As HttpWebRequest = HttpWebRequest.Create(goUrl.Text)
        request.Proxy = Nothing 'Speeds up the request by setting the proxies to nothing
        request.UserAgent = "Test" 'We should not be worried about this.
        request.PreAuthenticate = False
        request.Method = "POST"
        request.ContentType = "Text/ Xml;charset=UTF-8"
        'request.Headers.Add("SOAPAction", "http://www.lme4me.com:80/webapp/CustomPricing/services/CRIMethods/getCustomerRate")
        request.Headers.Add("SOAPAction", "getCustomerRate")

        'request.ContentLength = 2215
        request.Host = "www.lme4me.com:80"
        'request.Connection = "Keep-Alive"
        request.UserAgent = "Apache-HttpClient / 4.1.1 (java 1.5)"

        'Create the Response and reader
        Dim response As HttpWebResponse = request.GetResponse()
        Dim responseHdr As String = request.GetResponse.ResponseUri.ToString()
        Dim responseStream As IO.Stream = response.GetResponseStream()
        'Create a new Stream reader
        Dim streamReader As New System.IO.StreamReader(responseStream)
        Dim Data As String = streamReader.ReadToEnd

        streamReader.Close()

        ' Display the Data on the screen
        UrlResponseText.Text = Data

    Catch ex As WebException

        MsgBox("Inproper input: " + Err.Description)
        goUrl.Text = ""
        If (ex.Status = WebExceptionStatus.ProtocolError) Then
            Dim error1 As String = New IO.StreamReader(ex.Response.GetResponseStream()).ReadToEnd()
            MsgBox("Rest of Error: " + error1.ToString())
        End If
    End Try

End Sub

Private Sub goUrl_TextChanged(sender As Object, e As EventArgs) Handles goUrl.TextChanged

End Sub

 SoapByte = System.Text.Encoding.UTF8.GetBytes(SoapStr)

        'Create initial request
        Request = WebRequest.Create(goUrl.Text)
        Request.Headers.Add("SOAPAction", "http://www.lme4me.com:80/webapp/CustomPricing/services/CRIMethods/getCustomerRate")

        Request.ContentType = "Text/ Xml; charset=UTF-8"
        Request.ContentLength = SoapByte.Length
        Request.Method = "POST"

        DataStream = Request.GetRequestStream()
        DataStream.Write(SoapByte, 0, SoapByte.Length)
        DataStream.Close()

        Response = Request.GetResponse()
        DataStream = Response.GetResponseStream()
        Reader = New StreamReader(DataStream)
        Dim Data As String = Reader.ReadToEnd()

        DataStream.Close()
        Reader.Close()
        Response.Close()

        ' Display the Data on the screen
        UrlResponseText.Text = Data

---

这对我来说似乎是正确的。

有几点想法：1）重新考虑将XML加载到XML文档中，可以肯定的是，您没有XML错误。在字符串中构建XML通常是一个问题2）大多数SOAP服务器要求提供内容长度（您的内容长度被注释掉）。3） 如果服务提供商提供WSDL，请使用它来构建您的请求。VB在长度上给了我一个错误，因为我认为我也需要它。我不明白您使用WSDL来构建我的请求是什么意思？我复制并粘贴了来自SoapUI的请求，并创建了字符串代码。@StephanM-这里有一个关于WSDLs的链接：您可以用它添加一个Web引用，Visual Studio将连接代理类以便于调用。我有Web引用，但我没有任何使用它的VB示例。我试着用SoapUI创建VB，这让我对你的起点感到困惑。在我从视频中提取的代码中，我想我缺少了将xml SoapStr传递到请求中的地方。我测试了您的代码，得到了相同的错误。我用wireshark（嗅探器）捕获了http消息，但没有得到任何其他信息。http请求中似乎缺少头（或错误头）。网页上的文档需要登录，因此我无法验证您的初始请求是否包含正确的标题。需要服务器文档中的标题示例。调试代码的最佳方法是免费下载wireshark或fiddler等嗅探器。我会将您的代码修改为o