Lucid

Reading XML Nodes

4 posts in this topic

First off, sorry if this is something that has been answered somewhere on the forum. I've been poking around for a while and have come up empty. My brain also is not wanting to wrap around an issue I'm having. I've got a large number of XML data that I have to parse in order to pull out specific bits of info from each. I can't seem to figure out the code to get the child nodes I need (my XML lingo is a little fuzzy too)

Here is an example of the XML I'm trying to read:

<?xml version="1.0" encoding="UTF-8"?><computer><general><id>000</id><name>MyMachine</name></general><software><licensed_software><name>Adobe Acrobat Pro XI</name><name>Adobe Acrobat X</name><name>Adobe Illustrator CS6</name><name>Google Chrome</name><name>Microsoft Office</name></licensed_software></software></computer>

And here is a code snippet I've been messing with to try and figure out what my problem/solution is:

Local $oXML = ObjCreate("Microsoft.XMLDOM")
$oXML.setProperty("SelectionLanguage", "XPath")
;$oXML.loadxml(<DataReturnedFromAnotherQueryFromREST>) ;I'm reading from a stream and not an actual file in production
$oXML.load("MySampleFile.xml") ;Loading an actual file is just for testing purposes
Local $oItem = ""
Local $oSoftware = $oXML.selectNodes("//software/licensed_software")
For $oItem In $oSoftware
    ConsoleWrite("This spits out a glob of squished together info: " & $oItem.text & @CRLF)
Next

So how do I pull out each "name" node so they're separate and not globbed together? I've tried using selectSingleNode and some other variations, and I can't seem to get what I need. Can someone shed some light on what I'm overlooking (I have a feeling it's pretty simple). Thanks!

 

Share this post


Link to post
Share on other sites



#2 ·  Posted (edited)

When you use selectNodes then you get all nodes Elements which fits your XPath , but not nodes inisde the XPath.

So you get exactly one node

<licensed_software>

To go deeper you should check childs nodes

 

Try to read here:

https://msdn.microsoft.com/en-us/library/ms763798(v=vs.85).aspx

 

And here is your working example:

_Example()

Func _Example()
    ; Error monitoring. This will trap all COM errors while alive.
    ; This particular object is declared as local, meaning after the function returns it will not exist.
    Local $oErrorHandler = ObjEvent("AutoIt.Error", "_ErrFunc")
    Local $oXML = ObjCreate("Microsoft.XMLDOM")
    $oXML.setProperty("SelectionLanguage", "XPath")
    ;$oXML.loadxml(<DataReturnedFromAnotherQueryFromREST>) ;I'm reading from a stream and not an actual file in production
    $oXML.load("MySampleXML.xml") ;Loading an actual file is just for testing purposes
    Local $oSoftware_enum = Null
    Local $oSoftware_coll = $oXML.selectNodes("//software/licensed_software")
    Local $oChilds_coll = Null
    For $oSoftware_enum In $oSoftware_coll
        $oChilds_coll = $oSoftware_enum.childNodes
        For $oChild_enum In $oChilds_coll
            ConsoleWrite("This spits out a glob of squished together info: " & $oChild_enum.text & @CRLF)
        Next
    Next
EndFunc   ;==>_Example

; User's COM error function. Will be called if COM error occurs
Func _ErrFunc($oError)
    ; Do anything here.
    ConsoleWrite(@ScriptName & " (" & $oError.scriptline & ") : ==> COM Error intercepted !" & @CRLF & _
            @TAB & "err.number is: " & @TAB & @TAB & "0x" & Hex($oError.number) & @CRLF & _
            @TAB & "err.windescription:" & @TAB & $oError.windescription & @CRLF & _
            @TAB & "err.description is: " & @TAB & $oError.description & @CRLF & _
            @TAB & "err.source is: " & @TAB & @TAB & $oError.source & @CRLF & _
            @TAB & "err.helpfile is: " & @TAB & $oError.helpfile & @CRLF & _
            @TAB & "err.helpcontext is: " & @TAB & $oError.helpcontext & @CRLF & _
            @TAB & "err.lastdllerror is: " & @TAB & $oError.lastdllerror & @CRLF & _
            @TAB & "err.scriptline is: " & @TAB & $oError.scriptline & @CRLF & _
            @TAB & "err.retcode is: " & @TAB & "0x" & Hex($oError.retcode) & @CRLF & @CRLF)
EndFunc   ;==>_ErrFunc

 

btw.
You should also look here:  XMLWrapperEx.au3 - BETA
You could find there many interesting functions.

 
 

Edited by mLipok
typo

Signature beginning:   Wondering who uses AutoIT and what it can be used for ?
* GHAPI UDF - modest begining - comunication with GitHub REST API *
ADO.au3 UDF     POP3.au3 UDF     XML.au3 UDF    How to use IE.au3  UDF with  AutoIt v3.3.14.x  for other useful stuff click the following button

Spoiler

Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind. 

My contribution (my own projects): * Debenu Quick PDF Library - UDF * Debenu PDF Viewer SDK - UDF * Acrobat Reader - ActiveX Viewer * UDF for PDFCreator v1.x.x * XZip - UDF * AppCompatFlags UDF * CrowdinAPI UDF * _WinMergeCompare2Files() * _JavaExceptionAdd() * _IsBeta() * Writing DPI Awareness App - workaround * _AutoIt_RequiredVersion() * Chilkatsoft.au3 UDF * TeamViewer.au3 UDF * JavaManagement UDF * VIES over SOAP * WinSCP UDF * GHAPI UDF - modest begining - comunication with GitHub REST API *

My contribution to others projects or UDF based on  others projects: * _sql.au3 UDF  * POP3.au3 UDF *  RTF Printer - UDF * XML.au3 - BETA * ADO.au3 UDF SMTP Mailer UDF *

Useful links: * Forum Rules * Forum etiquette *  Forum Information and FAQs * How to post code on the forum * AutoIt Online Documentation * AutoIt Online Beta Documentation * SciTE4AutoIt3 getting started * Convert text blocks to AutoIt code * Games made in Autoit * Programming related sites * Polish AutoIt Tutorial * DllCall Code Generator * 

Wiki: Expand your knowledge - AutoIt Wiki * Collection of User Defined Functions * How to use HelpFile * Best coding practices * 

IE Related:  * How to use IE.au3  UDF with  AutoIt v3.3.14.x * Why isn't Autoit able to click a Javascript Dialog? * Clicking javascript button with no ID * IE document >> save as MHT file * IETab Switcher (by LarsJ ) * HTML Entities * _IEquerySelectorAll() (by uncommon) * 

I encourage you to read: * Global Vars * Best Coding Practices * Please explain code used in Help file for several File functions * OOP-like approach in AutoIt * UDF-Spec Questions *  EXAMPLE: How To Catch ConsoleWrite() output to a file or to CMD *

"Homo sum; humani nil a me alienum puto" - Publius Terentius Afer
"Program are meant to be read by humans and only incidentally for computers and execute" - Donald Knuth, "The Art of Computer Programming"
:naughty:  :ranting:, be  :) and       \\//_.

Anticipating Errors :  "Any program that accepts data from a user must include code to validate that data before sending it to the data store. You cannot rely on the data store, ...., or even your programming language to notify you of problems. You must check every byte entered by your users, making sure that data is the correct type for its field and that required fields are not empty."

Signature last update: 2017-06-04

Share this post


Link to post
Share on other sites

mLipok, thanks for the example and links! That helped me get it figured out.

Share this post


Link to post
Share on other sites

Another route (there are always millions of ways of doing this kind of thing):

$sXML = '<?xml version="1.0" encoding="UTF-8"?><computer><general><id>000</id><name>MyMachine</name></general><software><licensed_software><name>Adobe Acrobat Pro XI</name><name>Adobe Acrobat X</name><name>Adobe Illustrator CS6</name><name>Google Chrome</name><name>Microsoft Office</name></licensed_software></software></computer>'
Local $oXML = ObjCreate("Microsoft.XMLDOM")
$oXML.LoadXML($sXML)

Local $oNames = $oXML.selectNodes("//software/licensed_software/name")
For $oName In $oNames
    ConsoleWrite($oName.text & @CRLF)
Next

 

1 person likes this

IEbyXPATH-Grab IE DOM objects by XPATH IEscriptRecord-Makings of an IE script recorder ExcelFromXML-Create Excel docs without excel installed GetAllWindowControls-Output all control data on a given window.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now