Using the XML Reader

Classic Servoy
1

I am sorry, this is probably very simple.

I am trying to pass some fields into my solution from an email and naively thought the XML reader would do the job easily. Two hours later! I must be doing something very wrong:

var xmlString = '<firstname="Test"><lastname="Test2">'; 

var myXML = plugins.XmlReader.readXmlDocumentFromString(xmlString);

How do i read the element ‘firstname’?

I assumed

var firstname=myXML[0].getAttributeValue('firstname')

but all i get is errors.
I have looked for a simple example, but cant find one anywhere. The manual appears as clear as mud and just gives errors.

Can anyone help?

David

2

Not sure what errors you are getting, but your example string isn’t valid XML.

You could do one of the following for input XML:

<name first='Test' last='Test2'/>

or

<name>
  <first>Test</first>
  <last>Test2</last>
</name>
3

Thanks Greg,

How do i return say that value of ‘Firstname’ in the code example?

I dont seem to be able to get the getattribute syntax correct?

var xmlString = '<name><firstname>First</firstname><lastname>Last</lastname></name>'; 

var myXML = plugins.XmlReader.readXmlDocumentFromString(xmlString);

var firstaname=?

Thanks Again. Some things look and should be so easy, but are not.

David

4

Hi David,

Attributes are the parameter pairs inside XML tags.```

Text values are the values between the tags.```
<name><firstname>First</firstname><lastname>Last</lastname></name>

Now to get the first name from your XML your code will look something like this:

var xmlString = '<name><firstname>First</firstname><lastname>Last</lastname></name>'; 

// read XML string and get all root nodes in an Array
var myXML = plugins.XmlReader.readXmlDocumentFromString(xmlString); 

// get child nodes (in an Array) from the first root node (which is <name>)
var aNodes = myXML[0].getChildNodes();

// get the text value of the first node (which is <firstname>)
var sFirstName = aNodes[0].getTextValue();


application.output(sFirstName);

Hope this helps.

5

Note that this is going to get dramatically easier in Servoy 4, with support for E4X in the the JavaScript interpreter.

http://www.w3schools.com/e4x/e4x_example.asp

With E4X, you could do…

var name = <name><first>Test</first><last>Test2</last></name>;

var firstName = name.first;
var lastName = name.last;

Very cool stuff for XML manipulation.