package spark.examples.templateview;
import java.io.IOException;
import java.io.StringWriter;
import freemarker.template.Configuration;
import freemarker.template.Template;
import freemarker.template.TemplateException;
import spark.ModelAndView;
import spark.TemplateEngine;
public class FreeMarkerTemplateEngine extends TemplateEngine {
private Configuration configuration;
protected FreeMarkerTemplateEngine() {
this.configuration = createFreemarkerConfiguration();
}
@Override
public String render(ModelAndView modelAndView) {
try {
StringWriter stringWriter = new StringWriter();
Template template = configuration.getTemplate(modelAndView.getViewName());
template.process(modelAndView.getModel(), stringWriter);
return stringWriter.toString();
} catch (IOException e) {
throw new IllegalArgumentException(e);
} catch (TemplateException e) {
throw new IllegalArgumentException(e);
}
}
private Configuration createFreemarkerConfiguration() {
Configuration retVal = new Configuration();
retVal.setClassForTemplateLoading(FreeMarkerTemplateEngine.class, "freemarker");
return retVal;
}
}