Wrapping ErrorsTag, overriding renderDefaultContent

[talldean]

I'm using Spring 2.0.x. I can't upgrade to 2.5.x on this project.

I'm using validators, and create an error as follows:

String args[] = { "a.second.message.properties.key" };
errors.rejectValue("field", "message.properties.key", args, "default error message.");

In message.properties:

message.properties.key={0} works really well.
a.second.message.properties.key=This

I want the error displayed to be "This works really well.", but instead, get "a.second.message.properties.key works really well." I've decided to make a relatively dirty hack around this; put delimiters around that second message properties key, wrap the ErrorsTag, and do the substitution myself.

Problem is that Spring 2.0 ErrorsTag extends TagSupport; Spring 2.5 ErrorsTag extends BodyTagSupport, which would make this *much* easier. I tried various things, and finally gave up on wrapping BodyTagSupport around ErrorsTag in Java. What I've come to is this:

public class HcaErrorsTag extends ErrorsTag {

	private static final long serialVersionUID = 3L;

	public HcaErrorsTag() {
		setCssClass("errors");
		setPath("*");
	}
	
	protected void renderDefaultContent(TagWriter tagWriter) throws JspException {
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		OutputStreamWriter osw = new OutputStreamWriter(baos);
		TagWriter tempTagWriter = new TagWriter(osw);
		super.renderDefaultContent(tempTagWriter);
		
		try {
			String contentString = baos.toString();
			if (contentString != null) {
				pageContext.getOut().write(contentString);
			}
		} catch (IOException ioe) {
			throw new JspException(ioe);
		}
	}
}

except that this method doesn't seem to get called.

What additional debugging steps should I take? Did I go wrong somewhere obvious? Can I go back away from this dirty hack and do the same thing in a much more straightforward manner?

[talldean]

Ding. It wasn't getting called because I hadn't called setPath.

setPath("*")

Also, I forgot a

osw.flush();

, or this doesn't actually ever have any output.