import com.google.code.kaptcha.text.WordRenderer; //导入依赖的package包/类
/**
 * Create an image which will have written a distorted text.
 * 
 * @param text
 *            the distorted characters
 * @return image with the text
 */
public BufferedImage createImage(String text)
{
	WordRenderer wordRenderer = getConfig().getWordRendererImpl();
	GimpyEngine gimpyEngine = getConfig().getObscurificatorImpl();
	BackgroundProducer backgroundProducer = getConfig().getBackgroundImpl();
	boolean isBorderDrawn = getConfig().isBorderDrawn();
	this.width = getConfig().getWidth();
	this.height = getConfig().getHeight();

	BufferedImage bi = wordRenderer.renderWord(text, width, height);
	bi = gimpyEngine.getDistortedImage(bi);
	bi = backgroundProducer.addBackground(bi);
	Graphics2D graphics = bi.createGraphics();
	if (isBorderDrawn)
	{
		drawBox(graphics);
	}
	return bi;
}
 

import com.google.code.kaptcha.text.WordRenderer; //导入依赖的package包/类
/** */
public WordRenderer getWordRendererImpl()
{
	String paramName = Constants.KAPTCHA_WORDRENDERER_IMPL;
	String paramValue = this.properties.getProperty(paramName);
	WordRenderer wordRenderer = (WordRenderer) this.helper.getClassInstance(paramName, paramValue,
			new DefaultWordRenderer(), this);
	return wordRenderer;
}