Apache's Velocity — getTemplate() . how to pass string/object instead of .VM file
Apache's Velocity — getTemplate(). Actually its allowing to pass the .vm file name , can i pass the string/object here? is there any method available to pass the 开发者_开发问答string/object?
This is a sample code that is working for me.
Velocity version: 1.7
I use log4j as a logger.
import org.apache.log4j.Logger;
import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.Velocity;
import org.apache.velocity.app.VelocityEngine;
import org.apache.velocity.runtime.RuntimeConstants;
import org.apache.velocity.runtime.resource.loader.StringResourceLoader;
import org.apache.velocity.runtime.resource.util.StringResourceRepository;
private static void velocityWithStringTemplateExample() {
// Initialize the engine.
VelocityEngine engine = new VelocityEngine();
engine.setProperty(RuntimeConstants.RUNTIME_LOG_LOGSYSTEM_CLASS, "org.apache.velocity.runtime.log.Log4JLogChute");
engine.setProperty("runtime.log.logsystem.log4j.logger", LOGGER.getName());
engine.setProperty(Velocity.RESOURCE_LOADER, "string");
engine.addProperty("string.resource.loader.class", StringResourceLoader.class.getName());
engine.addProperty("string.resource.loader.repository.static", "false");
// engine.addProperty("string.resource.loader.modificationCheckInterval", "1");
engine.init();
// Initialize my template repository. You can replace the "Hello $w" with your String.
StringResourceRepository repo = (StringResourceRepository) engine.getApplicationAttribute(StringResourceLoader.REPOSITORY_NAME_DEFAULT);
repo.putStringResource("woogie2", "Hello $w");
// Set parameters for my template.
VelocityContext context = new VelocityContext();
context.put("w", "world!");
// Get and merge the template with my parameters.
Template template = engine.getTemplate("woogie2");
StringWriter writer = new StringWriter();
template.merge(context, writer);
// Show the result.
System.out.println(writer.toString());
}
I searched for hours on the same question, finally found the unit test code that shows everything necessary.
http://svn.apache.org/repos/asf/velocity/engine/trunk/velocity-engine-core/src/test/java/org/apache/velocity/test/StringResourceLoaderRepositoryTestCase.java
look into the StringResourceLoader
精彩评论