R robh Member Licensed User Longtime User Apr 4, 2012 #1 I have the following code where 'result.resultstream' is a valid reponse from a web request. I am attempting the to first check for a particular piece of text in the stream and if found then continue on to parse the stream elsewhere within my application(using sax parser). The problem I am having is that when performing the 1st check by converting the stream to text, this appears to auto close the stream? the second operation then fails with a "attempt to read a closed stream" error message (shown in red). Is there anyway to read utilise the stream more than once? Dim t As TextReader t.Initialize(result.ResultStream) ' have we any image in the response? If t.ReadAll.IndexOf("GetProductImageFullSizeResult") = -1 Then ToastMessageShow("There is no image available for this item.",True) Return End If xmlParser.Initialize() xmlParser.Parse(result.ResultStream,"GetProducIImageFullSize")
I have the following code where 'result.resultstream' is a valid reponse from a web request. I am attempting the to first check for a particular piece of text in the stream and if found then continue on to parse the stream elsewhere within my application(using sax parser). The problem I am having is that when performing the 1st check by converting the stream to text, this appears to auto close the stream? the second operation then fails with a "attempt to read a closed stream" error message (shown in red). Is there anyway to read utilise the stream more than once? Dim t As TextReader t.Initialize(result.ResultStream) ' have we any image in the response? If t.ReadAll.IndexOf("GetProductImageFullSizeResult") = -1 Then ToastMessageShow("There is no image available for this item.",True) Return End If xmlParser.Initialize() xmlParser.Parse(result.ResultStream,"GetProducIImageFullSize")
Erel B4X founder Staff member Licensed User Longtime User Apr 4, 2012 #2 A stream is not an array. Usually you can only read it once. Are you using HttpUtils? If yes the you can just call HttpUtils.GetInputStream again to get a new input stream. If not then you will need to something like: Code: Copy Dim str As String str = t.ReadAll If str.IndexOf(...) ... ... Dim In As InputStream Dim b() As Byte b = str.GetBytes("UTF8") In.InitializeFromBytesArray(b, 0, b.Length) XmlParser.Parse(in, ...) Upvote 0
A stream is not an array. Usually you can only read it once. Are you using HttpUtils? If yes the you can just call HttpUtils.GetInputStream again to get a new input stream. If not then you will need to something like: Code: Copy Dim str As String str = t.ReadAll If str.IndexOf(...) ... ... Dim In As InputStream Dim b() As Byte b = str.GetBytes("UTF8") In.InitializeFromBytesArray(b, 0, b.Length) XmlParser.Parse(in, ...)
