updownhome.java

Tapestry的一个练习例子

package com.ttdev.updown;

import org.apache.tapestry.RedirectException;
import org.apache.tapestry.annotations.InjectObject;
import org.apache.tapestry.engine.IEngineService;
import org.apache.tapestry.html.BasePage;

public abstract class UpdownHome extends BasePage {
	@InjectObject("engine-service:image")
	public abstract IEngineService getImageService();

	public String getImageUrl(int imageId) {
		return getImageService().getLink(false,
				new Object[] { Integer.toString(imageId) }).getURL();
	}

	public abstract String getImageId();

	public void onOk() {
		throw new RedirectException(getImageUrl(Integer.parseInt(getImageId())));
	}
}