Java Regex Replace Namespace

Question

New to Regex.

Can anyone tell me what the java regex replacement code is to replace the following XML

<?xml version="1.0" encoding="iso-8859-1"?><message xmlns="http://www.origoservices.com">   <m_control xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://www.origoservices.com"><control_timestamp>2014-09-30T14:39:05.6402</control_timestamp>........</message>

and make it

<?xml version="1.0" encoding="iso-8859-1"?><message><control_timestamp>2014-09-30T14:39:05.6402</control_timestamp>........</message>

The namespaces may be in differnt postions each time

Answer 1

You need to use a lookahead here.

<message.*?(?=<control_timestamp)

Replace the matched characters with <message>

DEMO

String src = "<?xml version=\"1.0\" encoding=\"iso-8859-1\"?><message xmlns=\"http://www.origoservices.com\">   <m_control xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns=\"http://www.origoservices.com\"><control_timestamp>2014-09-30T14:39:05.6402</control_timestamp>........</message>";
String out = src.replaceAll("<message.*?(?=<control_timestamp)", "<message>");
System.out.println(out);

Output:

<?xml version="1.0" encoding="iso-8859-1"?><message><control_timestamp>2014-09-30T14:39:05.6402</control_timestamp>........</message>

Answer 2

you can replace "<message.*<control_timestamp>" with "<message><control_timestamp>". then your output is ready.