Apache Camel message file name set or change

The file name of the current message can be retrieved from the Message header of the Exchange object as follows:

String filename = new String();
filename = exchange.getIn().getHeader(Exchange.FILE_NAME, String.class);

The Exchange class provides a whole host of constants for easy access, here we use FILE_NAME in conjuction with the getHeader() method to retrieve the current name of the file.

This example will replace the .csv file extension to .xml

Using the FILE_NAME again with setHeader() we can set the filename to our choosing:

exchange.getIn().setHeader(Exchange.FILE_NAME, filename.replaceFirst(".csv", ".xml"));

Below is the entire process() method from a class implementing Processor.

public class FileRename implements Processor {

public void process(Exchange exchange) throws Exception {
    String filename = new String();
    filename = exchange.getIn().getHeader(Exchange.FILE_NAME, String.class);
    exchange.getIn().setHeader(Exchange.FILE_NAME, filename.replaceFirst(".csv", ".xml"));
}
}

public class FileRename implements Processor {

  public void process(Exchange exchange) throws Exception {
    String filename = new String();
    filename = exchange.getIn().getHeader(Exchange.FILE_NAME, String.class);
    exchange.getIn().setHeader(Exchange.FILE_NAME, filename.replaceFirst(".csv", ".xml"));
  }
}