Java: XML canonicalization
What's the easiest way to make a canonical form of a XML file in Java? Do you have some done code for that? I've found several links on the net, like this, this, and this, but I can't make it to work :/
Thanks,
Ivan
EDIT: I used the canonicalizer that was proposed down there, but I get strange results. To be more precize, this method doesn't delete white spaces between开发者_高级运维 elements... This is what I get:
<Metric xmlns="http://www.ibm.com/wsla" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" name="total_memory_consumption_metric" type="double" unit="Mbit" xsi:schemaLocation="http://www.ibm.com/wsla WSLA.xsd"> <Source>ServiceProvider</Source> <MeasurementDirective resultType="double" xsi:type="StatusRequest"> <RequestURI> ***unused*** </RequestURI> </MeasurementDirective> </Metric>
The Canonicalizer class at Apache XML Security project.
Initialize the library.
org.apache.xml.security.Init.init();
Convert your XML.
Canonicalizer canon = Canonicalizer.getInstance(Canonicalizer.ALGO_ID_C14N_OMIT_COMMENTS);
byte canonXmlBytes[] = canon.canonicalize(yourXmlBytes);
String canonXmlString = new String(canonXmlBytes);
Another option is nu.xom.canonical.Canonicalizer if you're using XOM, or if you don't otherwise have a need for Apache XML Security.
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