Java parse XML with many levels

Question

I have a complex xml string that i have to parse i retrieve some data, here is the content :

<root1>
    <root2>
        <A>something</A>
        <B>something</B>
        <C>
            <D>
                <GetE>DataE</GetE>
                <GetF>DataF</GetF>
                <G>something</G>
                <H>something</H>
                <I>
                    <J>
                      <GetK>DataK</GetK>
                      <GetL>DataL</GetL>
                    </J>
                </I>
            </D>
            <D>
                <GetE>DataE</GetE>
                <GetF>DataF</GetF>
                <G>something</G>
                <H>something</H>
                <I>
                    <J>
                      <GetK>DataK</GetK>
                      <GetL>DataL</GetL>
                    </J>
                </I>
            </D>
        </C>
     </root2>
</root1>

I would like to print the content of GetE, GetF, GetK and GetL :

for example :

GetE = DataE,GetF = DataF,GetK = DataK,GetL = DataL

...

To convert my String data to an XML, I use this function In Java, how do I parse XML as a String instead of a file?

Any idea please ?

Do you mean you want to select all the nodes with those names, as in an XPath expression? — Tony Hopkinson, Mar 18 '14 at 22:25
What do you mean "multiple roots"? This document, like any XML document, doesn't have multiple root elements; that's what makes the root element a root element. — chrylis -cautiouslyoptimistic-, Mar 18 '14 at 22:26
I want to get for example : DataE, DataF, DataK, DataL, @chrylis : i would say multiple levels .. it's a mistake — zeomega, Mar 18 '14 at 22:35
I'm sorry for the sarcastic comment. You did manage to simplify your test case into something that looks remarkably 'academic' I must say. — Patrice M., Mar 19 '14 at 00:06
Maybe this one is more explicit : http://stackoverflow.com/questions/22493545/xpath-java-get-element-by-testing-value — zeomega, Mar 19 '14 at 00:09

score 0 · Answer 1 · edited May 23 '17 at 12:20

First of all, check this answer that's more applicable to your case. XPath is a convenient and easy t-to-use technology to extract the information you seek, but performance requirements may dictate otherwise.

The xpath expressions, in your case, would be, for instance::

"root1/root2/C/D/GetE/text()"
"root1/root2/C/D/GetF/text()"

But as others have commented, "root1/root2/C/D/GetE" doesn't return a single node, so you have to decide how you are going to represent the information too.

score 0 · Answer 2 · answered Mar 19 '14 at 00:31

0

Maybe there is a simpler way but SAXParser would do the job.

answered Mar 19 '14 at 00:31

zrac

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Java parse XML with many levels

2 Answers2