Below is the sample xml,
<?xml version="1.0" encoding="utf-8"?>
<UsersList>
<User>
<Name>sam&Tim</Name>
<Address>21, bills street, CA</Address>
<Issues>"Issues1", "Issues2"</Issues>
</User>
</UsersList>
c#:
string xml = System.IO.File.ReadAllText(#"E:\Sample.xml");
xml = System.Text.RegularExpressions.Regex.Replace(xml, "<(?![_:a-z][-._:a-z0-9]*\b[^<>]*>)", "<");
XDocument doc = XDocument.Parse(xml);
i need to convert the special charecters (<,>,",',&) and i am using the above regex. but parse method throws an error. any help please how to resolve the issue
See your current code converts XML like this
<?xml version="1.0" encoding="utf-8"?>
<UsersList>
<User>
<Name>sam&Tim</Name>
<Address>21, bills street, CA</Address>
<Issues>"Issues1", "Issues2"</Issues>
</User>
</UsersList>
Whereas Parse is looking it like this
<?xml version="1.0" encoding="utf-8"?>
<UsersList>
<User>
<Name>sam and Tim</Name>
<Address>21, bills street, CA</Address>
<Issues>"Issues1", "Issues2"</Issues>
</User>
</UsersList>
and thus you should not be converting < to < but XML contains sam&Tim would not allow you to Parse it. thus you can use
xml = xml.Replace("&", " n ");//n or and or some other char or string you want
instead of
xml = System.Text.RegularExpressions.Regex.Replace(xml, "<(?![_:a-z][-._:a-z0-9]*\b[^<>]*>)", "<");
Hope this will help you to parse it.
You can give a try with:
string xml = System.IO.File.ReadAllText(#"E:\Sample.xml");
xml = ReplaceXMLEncodedCharacters(xml)
public string ReplaceXMLEncodedCharacters(string input)
{
const string pattern = #"&#(x?)([A-Fa-f0-9]+);";
MatchCollection matches = Regex.Matches(input, pattern);
int offset = 0;
foreach (Match match in matches)
{
int charCode = 0;
if (string.IsNullOrEmpty(match.Groups[1].Value))
charCode = int.Parse(match.Groups[2].Value);
else
charCode = int.Parse(match.Groups[2].Value, System.Globalization.NumberStyles.HexNumber);
char character = (char)charCode;
input = input.Remove(match.Index - offset, match.Length).Insert(match.Index - offset, character.ToString());
offset += match.Length - 1;
}
return input;
}
Your problem is that your original XML is not a valid XML document, because is contains an unescaped ampersand ('&') which is explicitly forbidden by the standard that says
The ampersand character (&) and the left angle bracket (<) must not appear in their literal form, except when used as markup delimiters, or within a comment, a processing instruction, or a CDATA section.
To make it valid, you must use & instead of a literal &. Trying to "correct" it is not practical and a totally bad idea in the general case, because you can never be sure, where in your XML & stands for a literal & and where it is part of an XML entity. If it were possible to distinguish these usages unambiguously, that rule could be embedded in XML parsers and we would not have to deal with it.
A valid, standard-conformant representation of your document would be
<?xml version="1.0" encoding="utf-8"?>
<UsersList>
<User>
<Name>sam&Tim</Name>
<Address>21, bills street, CA</Address>
<Issues>"Issues1", "Issues2"</Issues>
</User>
</UsersList>
Related
How do I obtain the SOAP child node values of username (Gusion)?
I am using C# in the backend.
<?xml version="1.0" encoding="utf-8"?>
<soapenv:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:api="http://127.0.0.1/Integrics/Enswitch/API" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Body><api:some_api_call soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<username xsi:type="xsd:string">Gusion</username>
</api:some_api_call>
</soapenv:Body>
</soapenv:Envelope>
I have tried using this but it does not work
public static string SoapNodeValue(string xmlString)
{
string soapString = xmlString;
XmlDocument xdoc = new XmlDocument();
xdoc.LoadXml(soapString);
XmlNamespaceManager nsmgr = new XmlNamespaceManager(xdoc.NameTable);
nsmgr.AddNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance");
nsmgr.AddNamespace("api", "http://127.0.0.1/Integrics/Enswitch/API");
nsmgr.AddNamespace("xsd", "http://www.w3.org/2001/XMLSchema");
nsmgr.AddNamespace("soapenv", "http://schemas.xmlsoap.org/soap/envelope/");
nsmgr.AddNamespace("encodingStyle", "http://schemas.xmlsoap.org/soap/encoding/");
return xdoc.SelectSingleNode("/soapenv:Envelope/soapenv:Body/api:some_api_call/username", nsmgr).InnerText;
}
After playing around with your code, I saw VS throws this error,
System.Xml.XPath.XPathException:
''/soapenv:Envelope/soapenv:Body/api:some_api_call/username' has an
invalid token.'
For whatever reason, you have input the string with some unexpected encoding.
Now, copy and paste my string, and it should work,
"/soapenv:Envelope/soapenv:Body/api:some_api_call/username"
To prove my point, I created a python program,
import charade
def detect(s):
try:
# check it in the charade list
if isinstance(s, str):
return charade.detect(s.encode())
# detecting the string
else:
return charade.detect(s)
# in case of error
# encode with 'utf -8' encoding
except UnicodeDecodeError:
return charade.detect(s.encode('utf-8'))
d1 = detect('/soapenv:Envelope/soapenv:Body/api:some_api_call/username')
print ("d1 is encoded as : ", d1)
d2 = detect('/soapenv:Envelope/soapenv:Body/api:some_api_call/username')
print ("d2 is encoded as : ", d2)
And the result,
d1 is encoded as : {'encoding': 'utf-8', 'confidence': 0.7525}
d2 is encoded as : {'encoding': 'ascii', 'confidence': 1.0}
Where d1 is the problem string.
I just love to dig it into more and finally found the culprit, there is an invisible char U+200c in your string and it has a meaning!
My xamarin mobile app consumes soap service, when i make a login request the response returned has both Json and xml. I am interested only in the json string. Can any one tell me the way to parse the following response.
[{"Result":"true","HasError":false,"UserMsg":null,"ErrorMsg":null,"TransporterID":"327f6da2-d797-e311-8a6f-005056a34fa8"}]
<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><LoginResponse xmlns="http://tempuri.org/" /></soap:Body></soap:Envelope>
You can use the Substring method as follows:
string response = "<<The response you got>>";
string jsonResponse = response.Substring(0, response.IndexOf("<?"));
The 0 is the starting index (when to start extracting the substring) and the IndexOf will return the index of <? which is the start of the XML part of the response. You can read about the Substring Method here.
Therefore, you have filtered the JSON response from the whole string. (For a how-to parse JSON data, check this answer).
String.IndexOf will give you the index of the xml part, then you can use String.Substring:
string str = #"[{ ""Result"":""true"",""HasError"":false,""UserMsg"":null,""ErrorMsg"":null,""TransporterID"":""327f6da2-d797-e311-8a6f-005056a34fa8""}]
<? xml version = ""1.0"" encoding = ""utf-8"" ?>< soap : Envelope xmlns: soap = ""http://www.w3.org/2003/05/soap-envelope"" xmlns: xsi = ""http://www.w3.org/2001/XMLSchema-instance"" xmlns: xsd = ""http://www.w3.org/2001/XMLSchema"" >< soap:Body >< LoginResponse xmlns = ""http://tempuri.org/"" /></ soap:Body ></ soap:Envelope >";
string json = str.Substring(0, str.IndexOf("<? xml"));
Console.WriteLine(json); // [{ "Result":"true","HasError":false,"UserMsg":D":"327f6da2-d797-e311-8a6f-005056a34fa8"}]
I am trying to replace within a string
<?xml version="1.0" encoding="UTF-8"?>
<response success="true">
<output><![CDATA[
And
]]></output>
</response>
with nothing.
The problem I am running into is the characters <> and " characters are interacting within the replace. Meaning, it's not reading those lines as a full string all together as one but breaking the string when it comes to a <> or ". Here is what I have but I know this isn't right:
String responseString = reader.ReadToEnd();
responseString.Replace(#"<<?xml version=""1.0"" encoding=""UTF-8""?><response success=""true""><output><![CDATA[[", "");
responseString.Replace(#"]]\></output\></response\>", "");
What would be the correct code to get the replace to see these lines as just a string?
A string will never change. The Replace method works as follows:
string x = "AAA";
string y = x.Replace("A", "B");
//x == "AAA", y == "BBB"
However, the real problem is how you handle the XML response data.
You should reconsider your approach of handling incoming XML by string replacement. Just get the CDATA content using the standard XML library. It's as easy as this:
using System.Xml.Linq;
...
XDocument doc = XDocument.Load(reader);
var responseString = doc.Descendants("output").First().Value;
The CDATA will already be removed. This tutorial will teach more about working with XML documents in C#.
Given your document structure, you could simply say something like this:
string response = #"<?xml version=""1.0"" encoding=""UTF-8""?>"
+ #"<response success=""true"">"
+ #" <output><![CDATA["
+ #"The output is some arbitrary text and it may be found here."
+ "]]></output>"
+ "</response>"
;
XmlDocument document = new XmlDocument() ;
document.LoadXml( response ) ;
bool success ;
bool.TryParse( document.DocumentElement.GetAttribute("success"), out success) ;
string content = document.DocumentElement.InnerText ;
Console.WriteLine( "The response indicated {0}." , success ? "success" : "failure" ) ;
Console.WriteLine( "response content: {0}" , content ) ;
And see the expected results on the console:
The response indicated success.
response content: The output is some arbitrary text and it may be found here.
If your XML document is a wee bit more complex, you can easily select the desired node(s) using an XPath query, thus:
string content = document.SelectSingleNode( #"/response/output" ).InnerText;
I have a XML file that i am using to loop through an on matching of a child node getting the value of a an attribute.The thing is matching these values with a * character or ? character like some regex style..can someone tell me how to do this .So if a request comes like g.portal.com it should match the second node .I am using .net 2.0
Below is my XML file
<Test>
<Test Text="portal.com" Sample="1" />
<Test Text="*.portal.com" Sample="201309" />
<Test Text="portal-0?.com" Sample="201309" />
</Test>
XmlDocument xDoc = new XmlDocument();
xDoc.Load(PathToXMLFile);
foreach (XmlNode node in xDoc.DocumentElement.ChildNodes)
{
if (node.Attributes["Sample"].InnerText == value)
{
}
}
What you need to do is first convert each Text attribute into a valid Regex pattern and then use it to match your input. Something like this:
string input = "g.portal.com";
XmlNode foundNode = null;
foreach (XmlNode node in xDoc.DocumentElement.ChildNodes)
{
string value = node.Attributes["Text"].Value;
string pattern = Regex.Escape(value)
.Replace(#"\*", ".*")
.Replace(#"\?", ".");
if (Regex.IsMatch(input, "^" + pattern + "$"))
{
foundNode = node;
break; //remove if you want to continue searching
}
}
After executing the above code, foundNode should contain the second node from the xml file.
So you have an XML file that sets up patterns, right? You'll want to feed those patterns into Regexes and then stream a number of requests through them. Did I get that correct?
Assuming the XML file doesn't change it only needs to be processed into according Regexes. For example *.portal.com would translate to
new Regex("\\w+\\.portal\\.com");
You'll just have to escape the dots, replace * with \\w+ and ? with \\w if i guessed the semantics of you match patterns correctly.
Look up the correct replacements at http://msdn.microsoft.com/en-us/library/az24scfc(v=vs.110).aspx
I have a xml-document that simplified looks like this:
<?xml version="1.0" encoding="utf-8"?>
<Node1 separator=" " />
There is a \t as attribute value.
When executing this code
var path = #"C:\test.xml";
var doc = XDocument.Load(path);
doc.Save(path);
the attribute value changed from tab to space.
<?xml version="1.0" encoding="utf-8"?>
<Node1 separator=" " />
Is there a way to preserve the origin value, because it is required to be a tab?
This is "XML whitespace normalization in attributes" portion of XML:Attribute-Value Normalization which is default behavior when handling XML documents.
For a white space character (#x20, #xD, #xA, #x9), append a space character (#x20) to the normalized value
You should be able to use XmlTextReader.Normalization property as described here. XmlDocument can load from reader XmlDocument.Load.
var path = #"C:\test.xml";
XmlDocument doc = new XmlDocument();
XmlTextReader reader = new XmlTextReader(path);
doc.Load(reader);
var s = doc.SelectSingleNode("*/#*").InnerText;
Console.WriteLine("|{0}|, {1}", (int)s[0], s.Length); // prints 9 - ASCII code of tab
doc.Save(path);