Get XML Element with JDOM

I have a XML file like the following one.

<samlp:AuthnRequest xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol"
                    Destination="http://ift.tt/1CoMB7U"
                    ID="id-OPIfhD3il2eK816THPlj2Nk38KM-"
                    IssueInstant="2014-09-02T14:36:02Z"
                    ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST"
                    Version="2.0"
                    >
    <saml:Issuer xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion"
                 Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity"
                 >http://ift.tt/1ukrizz;
    <samlp:NameIDPolicy AllowCreate="true"
                        Format="urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified"
                        />
    <samlp:RequestedAuthnContext Comparison="exact">
        <saml:AuthnContextClassRef xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef>
    </samlp:RequestedAuthnContext>
</samlp:AuthnRequest>

How can get the content "http://ift.tt/1CoMB7W" from the above XML using JDOM ?

I am trying the below code and able to retrieve the "IssueInstant" & "ProtocolBinding" successfully. But unable to retrieve the content "http://ift.tt/1CoMB7W". Please help.

private String[] getRequestAttributes(String xmlString) throws SamlException {
      Document doc = Util.createJdomDoc(xmlString);
      if (doc != null) {
        String[] samlRequestAttributes = new String[2];
        samlRequestAttributes[0] = doc.getRootElement().getAttributeValue(
          "IssueInstant");
        samlRequestAttributes[2] = doc.getRootElement().getAttributeValue(
          "ProtocolBinding");
        return samlRequestAttributes;
      } 
  }