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Dealing with mixed content (whitespace, comments, text, child elements, and more) |
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The most general problem in XML processing is getting text data from an element
with mixed contents, e.g. text, child, text, child etc. JDOM offers a simple
solution: it collects all text-sections and returns entire text at one time.
Besides if source XML is formatted, text data may contain a lot of whitespaces.
There is a way to trim extra spaces and get valid text:
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.DOMBuilder;
/**
* This sample program showing how it is easy to access
* to contents of JDOM document.
*/
public class Test {
public static void main(String[] args) {
try {
// a builder takes a boolean value meaning validation mode:
DOMBuilder builder = new DOMBuilder(false);
// simply load the document::
Document document = builder.build(
new java.io.File("sample.xml"));
Element order = document.getRootElement();
// find an address tag:
Element address =
order.getChild("purchased-by").getChild("address");
// simply get the contents of an element:
String addressValue = address.getText();
System.out.println("Original address is: '" +
addressValue + "'");
// or get it wihout whitespaces:
addressValue = address.getTextTrim();
System.out.println("Nice address is: '" +
addressValue + "'");
// .. do something else ...
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
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