Groovy: trouble printing out attributes from xml - groovy

Question

I am trying to parse a xml file and print out attributes but it is not working.
Here is the Groovy code:
def Server1 = new XmlParser().parse('c:\\temp\\webSimplified.xml')
Server1.each {
println "Stuff in session-config: ${it}"
it.attributes().each {
println 'PLEASE PRINT OUT ATTRIBUTES: '
println it.toString()
}
}
Here is the webSimplified.xml
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<servlet>
<servlet-name>jsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>fork</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>xpoweredBy</param-name>
<param-value>false</param-value>
</init-param>
<load-on-startup>3</load-on-startup>
</servlet>
<session-config>
<session-timeout>30</session-timeout>
</session-config>
</web-app>
And here is the results from running my Groovy script: Nothing prints out from the 'it.attributes().each {' segment. How can I get that to work?
Stuff in session-config: {http://xmlns.jcp.org/xml/ns/javaee}servlet[attributes={}; value=[{http://xmlns.jcp.org/xml/ns/javaee}servlet-name[attributes={}; value=[jsp]], {http://xmlns.jcp.org/xml/ns/javaee}servlet-class[attributes={}; value=[org.apache.jasper.servlet.JspServlet]], {http://xmlns.jcp.org/xml/ns/javaee}init-param[attributes={}; value=[{http://xmlns.jcp.org/xml/ns/javaee}param-name[attributes={}; value=[fork]], {http://xmlns.jcp.org/xml/ns/javaee}param-value[attributes={}; value=[false]]]], {http://xmlns.jcp.org/xml/ns/javaee}init-param[attributes={}; value=[{http://xmlns.jcp.org/xml/ns/javaee}param-name[attributes={}; value=[xpoweredBy]], {http://xmlns.jcp.org/xml/ns/javaee}param-value[attributes={}; value=[false]]]], {http://xmlns.jcp.org/xml/ns/javaee}load-on-startup[attributes={}; value=[3]]]]
Stuff in session-config: {http://xmlns.jcp.org/xml/ns/javaee}session-config[attributes={}; value=[{http://xmlns.jcp.org/xml/ns/javaee}session-timeout[attributes={}; value=[30]]]]
Process finished with exit code 0

Answer 1

Of course nothing is printed. I taught you in the other answer how to print out attributes, butt you have no attributes, but child tags.
Try this:
def Server1 = new XmlParser().parse(/c:\temp\webSimplified.xml/)
Server1.each {
println "Stuff in ${it.name().localPart}: $it"
println()
it.children().each {
println 'PLEASE PRINT OUT child element: '
println it
println()
}
3.times { println() }
}

Answer 2

This works:
def Server1 = new XmlParser().parseText('''
<web-app
version="3.1">
<servlet>
<servlet-name>jsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>fork</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>xpoweredBy</param-name>
<param-value>false</param-value>
</init-param>
<load-on-startup>3</load-on-startup>
</servlet>
<session-config>
<session-timeout>30</session-timeout>
</session-config>
</web-app>
''')
Output:
servlet-name : jsp
servlet-class : org.apache.jasper.servlet.JspServlet
init-param :
init-param :
load-on-startup : 3
session-timeout : 30

Answer 3

Assuming you want to print the sesssion config values (a qualified guess based on your question), the following would work:
def str = '''
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<servlet>
<servlet-name>jsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>fork</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>xpoweredBy</param-name>
<param-value>false</param-value>
</init-param>
<load-on-startup>3</load-on-startup>
</servlet>
<session-config>
<session-timeout>30</session-timeout>
</session-config>
</web-app>
'''
def xml = new XmlParser().parseText(str)
xml.'session-config'.'*'.each { node ->
println "${node.name().localPart} -> ${node.text()}"
}
note that node is an instance of groovy.util.Node and node.name() returns an instance of QName which is a namespace aware object. To get the 'local name' we call 'localPart' on the QName.
The gpath expression xml.'session-config'.'*'.each means:
from the root node (i.e. the xml variable here), select all child nodes with the name 'session-config' and then iterate over all child nodes under that node.
The above prints:
session-timeout -> 30