this.velocity = new VelocityEngine();
    velocity.setProperty("runtime.log.logsystem.class", NullLogChute.class);
    velocity.setProperty("input.encoding", "UTF-8");
    velocity.setProperty("output.encoding", "UTF-8");
    velocity.setProperty("url.resource.loader.class", "org.apache.velocity.runtime.resource.loader.URLResourceLoader");
    velocity.setProperty("url.resource.loader.root", url);
    velocity.setProperty("url.resource.loader.cache", false);
    velocity.setProperty("url.resource.loader.modificationCheckInterval", "60");
    velocity.setProperty("resource.loader", "url, file");
    this.velocity.init();
    this.rt = new RenderTool();
    this.rt.setVelocityEngine(this.velocity);