Solved

Need to remove Soap envelope to parse XML response

Posted on 2010-08-20
2
4,257 Views
Last Modified: 2012-05-10
I am using asp.net 2.0 and a webservice that returns XML data as a string.
I am able successfully load the xml with XMLDocument.LoadXML(strXML). The response is inside a soap envelope in a plain text format.

How do I access the xml values ('LoginResponse' and SECTOKEN) as XML nodes without resorting to string manipulation (i.e. chopping off the soap enveleope, or using instr(SECTOKEN) to find the value).

That is, how do I remove the soap and get to the good stuff?

Example XML response below.

Thanks!
<?xml version="1.0" encoding="UTF-8"?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"><soapenv:Body><ns:iws0005lResponse xmlns:ns="http://login.wsbeans.iseries/xsd"><ns:return><ns:_LS_OUTPUT_PARM_BUFF_STRUCT><ns:_LS_OUTPUT_PARM_BUFF>&lt;?xml version="1.0" encoding="UTF-8"?&gt;&#xD;
&lt;LoginResponse result="SUCCESS"&gt;&#xD;
&lt;SECTOKEN&gt;4BC952DED0D2BA39A714F3BEB2A8787D71041A02F60A1C5527807B&lt;/SECTOKEN&gt;&#xD;
&lt;/LoginResponse&gt;&#xD;
</ns:_LS_OUTPUT_PARM_BUFF><ns:_LS_OUTPUT_PARM_BUFF></ns:_LS_OUTPUT_PARM_BUFF><ns:_LS_OUTPUT_PARM_BUFF></ns:_LS_OUTPUT_PARM_BUFF><ns:_LS_OUTPUT_PARM_BUFF></ns:_LS_OUTPUT_PARM_BUFF></ns:_LS_OUTPUT_PARM_BUFF_STRUCT></ns:return></ns:iws0005lResponse></soapenv:Body></soapenv:Envelope>

Open in new window

0
Comment
Question by:NELIXINC
2 Comments
 
LVL 4

Accepted Solution

by:
yesthatbob earned 500 total points
ID: 33489817
You can locate the node containing the response using XPath passed to XmlDocument.SelectSingleNode(), and then refer to its InnerText property to get the formatted XML. Then, you can read this formatted XML and use XPath again to get to the actual result value. See my code below.
// Assumes you have your SOAP envelope already loaded into an XmlDocument named 'doc'
			XmlDocument doc = new XmlDocument();
			doc.Load(...);

			// Specify namespace manager to handle 'soapenv' and 'ns' namespaces
			NameTable nameTbl = new NameTable();
			XmlNamespaceManager nsMgr = new XmlNamespaceManager(nameTbl);
			nsMgr.AddNamespace("soapenv", "http://schemas.xmlsoap.org/soap/envelope/");
			nsMgr.AddNamespace("ns", "http://login.wsbeans.iseries/xsd");
			
			// Find the response element using XPath
			XmlNode outputElem = doc.SelectSingleNode("/soapenv:Envelope/soapenv:Body/ns:iws0005lResponse/ns:return/ns:_LS_OUTPUT_PARM_BUFF_STRUCT/ns:_LS_OUTPUT_PARM_BUFF", nsMgr);

			// Get response and remove leading white space (since xml declaration can't have leading whitespace)
			string responseText = outputElem.InnerText;
			responseText = responseText.Substring(responseText.IndexOf('<'));

			// responseText will now contain the actual response formatted as XML

			// Load response XML into XMLDocument
			doc.LoadXml(responseText);

			// Find LoginResponse using XPath
			outputElem = doc.SelectSingleNode("/LoginResponse");

			// Get value of result attribute
			string result = outputElem.Attributes["result"].Value;

Open in new window

0
 

Author Closing Comment

by:NELIXINC
ID: 33501883
Thank you so much. You're code works beautifully. Thanks especially for plugging in the namespace values from my example code. That was the part I was missing completely, and now I'm beginning to understand it.
0

Featured Post

3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Media.Imaging 1 18
C# Desktop Application 3 36
ASP.NET(C#) Eliminating weekends from a date range 2 37
Problem!!! 8 33
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…

832 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question