Convert String to XML, then search for text

[Matt Holloway]

I have a SOAP message that comes back from an external system to my Java class as a String. I need to convert this to XML, then search for text in certain elements. Anybody have quick method, or point me to a tutorial for this? Here is a sample of what I'm trying to do:
String Returned

  
<SOAP:Envelope xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/">
        <SOAP:Header>
                <transaction>
                        <id> 
                             0000000003947976
                        </id>
                </transaction>
        </SOAP:Header>
<SOAP:Body>
           <faultcode>Client</faultcode>
<faultstring>exception: No such entity</faultstring>
<detail>
<exception>                    
<className>com.matt.holloway.Servlet</className>
<message>No such entity: com.matt.holloway.Sample</message>
</exception>
</detail>
          </faultcode>
</SOAP:Body>
</SOAP:Envelope>

What I need

  
String strID = {contents of <id> tag};
String strFaultCode = {contents of <faultcode> tag};
String strFaultMsg = {contents of <faultstring> tag};
String strMessage = {contents of <message> tag};

Thanks.

[Lasse Koskela]

Would it be ok to parse the XML string into a DOM tree and navigate to the parts you need using the DOM API?

[Matt Holloway]

That would work. Really, I just want an easy search and grab method, rather than running through a String object searching for text and grabbing data, it would be nice to just grab values of tags.

[Matt Holloway]

p.s. : please ignore the fact that the XML above is malformed, there shouldn't be a closing </faultcode> at the bottom as that tag is closed on the same line as it is declared.

[Lasse Koskela]

You might also benefit from using XPath to pick the parts you want. Jaxen is an open source XPath library you could probably use for the job.

[Matt Holloway]

Thanks, I'll have a look at that.