I want to use a Wildcards in for the name attribute. For example, this is my regular XPath:
name = "view:_id1:_id4:cbMain:cbChairman"
I want to replace the _id1:_id4:cbMain: reference with a wildcard because the number is dynamic. I'm looking for something like this:
name = "view:*:cbChairman"
I don't know how to solve this issue. Anyone has a suggestion?
Related
Is it possible to remove or replace text on XPath string?
Using XPath I get url with http://www and I want to remove http://www, so the same XPath query would return me only a link without http://www. I can't find anything about removing or replacing Xpath string.
Is it possible?
If so, how to do this?
Have you tried substring-after?
substring-after('http://www.stackoverflow.com', 'http://www.')
Example:
<demo>http://www.stackoverflow.com</demo>
XPath:
//demo/substring-after(., 'http://www.')
Yields:
stackoverflow.com
Check online demo here.
I have this query //*[#id="test"]/div/[not(contains(.,'/explore'))]
I want to add a second 'not contains' command to this:
//*[#id="test"]/div/[not(contains(.,'/locations'))]
And maybe even a 3rd one. Does anyone know how to do this?
None of what you posted is a valid XPath expression. If you meant to filter the div element so that only div that doesn't contain certain string, say "/explore", is returned, you can do this way instead :
//*[#id="test"]/div[not(contains(.,'/explore'))]
and another XPath example that check if the div doesn't contain any of 2 strings, "/explore" and "/locations" :
//*[#id="test"]/div[not(contains(.,'/explore')) and not(contains(.,'/locations'))]
Lets suppose I have a url like this:
https://www.youtube.com/watch/3e4345?v=rwmEkvPBG1s
What is the best and shorthest way to only get the 3e4345 part?
Sometimes it doesn't contain additional params in ?
I don't want to use any gems.
What I did was:
url = url.split('/watch/')
url = url[1].split('/')[0].split('?')[0]
Is there a better way? Thanks
possibly the safest and best one. use URI.
URI("https://www.youtube.com/watch/34345?v=rwmEkvPBG1s").path.split("/").last
For more refer How to extract URL parameters from a URL with Ruby or Rails?
You could do the following and using the match function to find a match based on a regular expression statement. The value at [1] is the first capture from the regular expression. I have included a breakdown from regexper.com to help illustrate what the expression is accomplishing.
You will notice parentheses around the \d+ which are what captures the digits out of the URL when it matches.
url.to_s.match(/\/watch\/(\d+).*$/)[1]
x = "https://www.youtube.com/watch/34345?v=rwmEkvPBG1s"
File.basename(URI(x).path)
=> "34345"
I'm trying to parse a webpage to get posts from a forum.
The start of each message starts with the following format
<div id="post_message_somenumber">
and I only want to get the first one
I tried xpath='//div[starts-with(#id, '"post_message_')]' in yql without success
I'm still learning this, anyone have suggestions
I think I have a solution that does not require dealing with namespaces.
Here is one that selects all matching div's:
//div[#id[starts-with(.,"post_message")]]
But you said you wanted just the "first one" (I assume you mean the first "hit" in the whole page?). Here is a slight modification that selects just the first matching result:
(//div[#id[starts-with(.,"post_message")]])[1]
These use the dot to represent the id's value within the starts-with() function. You may have to escape special characters in your language.
It works great for me in PowerShell:
# Load a sample xml document
$xml = [xml]'<root><div id="post_message_somenumber"/><div id="not_post_message"/><div id="post_message_somenumber2"/></root>'
# Run the xpath selection of all matching div's
$xml.selectnodes('//div[#id[starts-with(.,"post_message")]]')
Result:
id
--
post_message_somenumber
post_message_somenumber2
Or, for just the first match:
# Run the xpath selection of the first matching div
$xml.selectnodes('(//div[#id[starts-with(.,"post_message")]])[1]')
Result:
id
--
post_message_somenumber
I tried xpath='//div[starts-with(#id,
'"post_message_')]' in yql without
success I'm still learning this,
anyone have suggestions
If the problem isn't due to the many nested apostrophes and the unclosed double-quote, then the most likely cause (we can only guess without being shown the XML document) is that a default namespace is used.
Specifying names of elements that are in a default namespace is the most FAQ in XPath. If you search for "XPath default namespace" in SO or on the internet, you'll find many sources with the correct solution.
Generally, a special method must be called that binds a prefix (say "x:") to the default namespace. Then, in the XPath expression every element name "someName" must be replaced by "x:someName.
Here is a good answer how to do this in C#.
Read the documentation of your language/xpath-engine how something similar should be done in your specific environment.
#FindBy(xpath = "//div[starts-with(#id,'expiredUserDetails') and contains(text(), 'Details')]")
private WebElementFacade ListOfExpiredUsersDetails;
This one gives a list of all elements on the page that share an ID of expiredUserDetails and also contains the text or the element Details
I am making a modification to a web application using XPath, and when executed I get an error message - Invalid token!
This is basic what I am doing
public xmlNode GetSelection (SelectParams params, xmldocument docment)
{
xpathstring = string.format("Name =\'{0}' Displaytag = \'{1}' Manadatory=\'{2}', params.Name, params.Displaytag, params.Manadatory);
return document.selectsinglenode(xpathstring);
}
As you can see, I am making a string and setting values on the nodes I am trying to find against my xml document, and thus returning xml data that matches my parameters.
What is happening is that I am getting an xpathexeception error in Visual Studio and it says invalid token.
I do know that in the xml document that the parameters I am looking in the tags have double quotes, for example, Name="ABC". So, I thought the problem could be solved using an "\".
Can anyone help?
Update from comments
In the Xml Document, the tag has
attributes where they are set as
Name="ABC" Displaytag="ATag"
Manadatory="true".
I guess you need:
//*[#Name="ABC"][#Displaytag="ATag"][#Manadatory="true"]
Or
//*[#Name="ABC" and #Displaytag="ATag" and #Manadatory="true"]
Meaning: any element in the whole document having a Name attribute with "ABC" value, a Displaytag attribute with "ATag" value and a Manadatory attribute with "true" value.
The string passed as argument to SelectSingleNode() (BTW, the exact capitalization is important) is something like:
Name ='someName' Displaytag = 'someString' Manadatory='true'
This is extremely different than a syntactically legal XPath expression.
And the error message just reflects the fact that toxic food has been given to the XPath engine.
Solution: Do read at least a light XPath tutorial and then specify a correct XPath expression.
The string you are constructing is not a valid XPath expression. In fact, it is nothing like XPath at all.
Indeed, even if it were a valid XPath expression, constructing it this way by string concatenation is a very dangerous practice, because of the possibility of injection attacks. But I suspect that advice will fall on stony ground.