Java Code Examples for org.apache.velocity.app.VelocityEngine#mergeTemplate()

@Override
public void writeTo(String templateReference, Viewable viewable, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders,
		OutputStream out) throws IOException {

	// 获取 模板引擎
	VelocityEngine velocityEngine = getVelocityEngine();

	// 实例化一个VelocityContext
	VelocityContext context = (VelocityContext) viewable.getModel();
	Enumeration<String> enums = request.getParameterNames();
	while (enums.hasMoreElements()) {
		String key = enums.nextElement();
		context.put(key, request.getParameter(key));
	}
	// 把request放进模板上下文里
	context.put("request", request);

	// 渲染并输出
	OutputStreamWriter outputStreamWriter = new OutputStreamWriter(out);
	velocityEngine.mergeTemplate(templateReference, "utf8", context, outputStreamWriter);
	outputStreamWriter.flush();
	outputStreamWriter.close(); // 有必要关闭吗? 关闭了是否对jax-rs拦截器,servlet有影响,需要继续学习,参考jsp模板实现
}
 

/**
 * Create the string for the report to write to disk about found invariants.
 * 
 * @return The report to write.
 */
public String createReport() {
  if (state.getTests().size() == 0) return "No failing tests found.";
  VelocityEngine velocity = new VelocityEngine();
  VelocityContext vc = new VelocityContext();
  vc.put("testCount", state.getTestCount());
  vc.put("lengths", state.getLengths());
  vc.put("finalLength", state.getTests().get(0).getAllStepNames().size());
  vc.put("shortests", state.getTests().size());
  vc.put("stepCounts", invariants.getUsedStepCounts());
  vc.put("missingSteps", invariants.getMissingSteps());
  vc.put("finalSteps", invariants.getLastSteps());
  vc.put("s_precedences", invariants.getStrictPrecedences());
  vc.put("f_precedences", invariants.getFlexPrecedences());
  vc.put("sequences", invariants.getSequences());

  velocity.setProperty("resource.loader", "class");
  velocity.setProperty("class.resource.loader.class", "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");
  StringWriter sw = new StringWriter();
  velocity.mergeTemplate("osmo/tester/optimizer/reducer/template.vm", "UTF8", vc, sw);
  return sw.toString();
}
 

/**
 * 渲染模板文件.
 * 
 * @param velocityEngine velocityEngine, 需经过VelocityEngineFactory处理, 绑定Spring的ResourceLoader.
 * @param templateContent 模板文件名, loader会自动在前面加上velocityEngine的resourceLoaderPath.
 * @param context 变量Map.
 */
public static String renderFile(String templateFilePName, VelocityEngine velocityEngine, String encoding,
		Map<String, ?> context) {
	VelocityContext velocityContext = new VelocityContext(context);

	StringWriter result = new StringWriter();
	velocityEngine.mergeTemplate(templateFilePName, encoding, velocityContext, result);
	return result.toString();
}
 

public String giefScript() {
  /** For template->script generation. */
  VelocityEngine velocity = new VelocityEngine();
  /** For storing template variables. */
  VelocityContext vc = new VelocityContext();
  vc.put("tests", tests);
  velocity.setProperty("resource.loader", "class");
  velocity.setProperty("class.resource.loader.class", "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");
  StringWriter sw = new StringWriter();
  velocity.mergeTemplate("osmo/tester/examples/tutorial/scripting/hello-template.vm", "UTF8", vc, sw);
  return sw.toString();
}
 

public static boolean mergeTemplate(VelocityEngine vengine, String vTemplate,
		Context context, PrintWriter out)
{
	boolean retval = false;
	try {
		vengine.mergeTemplate(vTemplate, context, out);
		retval = true;
	}

	finally
	{
		if ( retval == false) log.warn("Unable to process Template - "+vTemplate);
		return retval;
	}
}
 

public static boolean mergeTemplate(VelocityEngine vengine, String vTemplate,
		Context context, PrintWriter out)
{
	boolean retval = false;
	try {
		vengine.mergeTemplate(vTemplate, context, out);
		retval = true;
	}

	finally
	{
		if ( retval == false) log.warn("Unable to process Template - {}", vTemplate);
		return retval;
	}
}
 

public static void processWithVelocity(PageContext pageContext, String template_file, 
                                       Writer writer, VelocityContext vc) {
  try {
    VelocityEngine vengine = getVelocityEngine(pageContext.getServletContext());
    vengine.mergeTemplate(template_file, org.apache.velocity.runtime.RuntimeSingleton.getString(Velocity.INPUT_ENCODING, Velocity.ENCODING_DEFAULT), vc, writer);
  } catch (Exception e) {
    throw new OntopiaRuntimeException(e);
  }
}
 

public static boolean mergeTemplate(VelocityEngine vengine, String vTemplate,
		Context context, PrintWriter out)
{
	boolean retval = false;
	try {
		vengine.mergeTemplate(vTemplate, context, out);
		retval = true;
	}

	finally
	{
		if ( retval == false) log.warn("Unable to process Template - "+vTemplate);
		return retval;
	}
}
 

public static boolean mergeTemplate(VelocityEngine vengine, String vTemplate,
		Context context, PrintWriter out)
{
	boolean retval = false;
	try {
		vengine.mergeTemplate(vTemplate, context, out);
		retval = true;
	}

	finally
	{
		if ( retval == false) log.warn("Unable to process Template - {}", vTemplate);
		return retval;
	}
}
 

/**
 * Merge the specified Velocity template with the given model and write
 * the result to the given Writer.
 * @param velocityEngine VelocityEngine to work with
 * @param templateLocation the location of template, relative to Velocity's resource loader path
 * @param model the Map that contains model names as keys and model objects as values
 * @param writer the Writer to write the result to
 * @throws VelocityException if the template wasn't found or rendering failed
 * @deprecated Use {@link #mergeTemplate(VelocityEngine, String, String, Map, Writer)}
 * instead, following Velocity 1.6's corresponding deprecation in its own API.
 */
@Deprecated
public static void mergeTemplate(
		VelocityEngine velocityEngine, String templateLocation, Map<String, Object> model, Writer writer)
		throws VelocityException {

	VelocityContext velocityContext = new VelocityContext(model);
	velocityEngine.mergeTemplate(templateLocation, velocityContext, writer);
}
 

/**
 * Merge the specified Velocity template with the given model and write the result
 * to the given Writer.
 * @param velocityEngine VelocityEngine to work with
 * @param templateLocation the location of template, relative to Velocity's resource loader path
 * @param encoding the encoding of the template file
 * @param model the Map that contains model names as keys and model objects as values
 * @param writer the Writer to write the result to
 * @throws VelocityException if the template wasn't found or rendering failed
 */
public static void mergeTemplate(
		VelocityEngine velocityEngine, String templateLocation, String encoding,
		Map<String, Object> model, Writer writer) throws VelocityException {

	VelocityContext velocityContext = new VelocityContext(model);
	velocityEngine.mergeTemplate(templateLocation, encoding, velocityContext, writer);
}
 

/**
 * Merge the specified Velocity template with the given model and write
 * the result to the given Writer.
 * @param velocityEngine VelocityEngine to work with
 * @param templateLocation the location of template, relative to Velocity's resource loader path
 * @param model the Map that contains model names as keys and model objects as values
 * @param writer the Writer to write the result to
 * @throws VelocityException if the template wasn't found or rendering failed
 * @deprecated Use {@link #mergeTemplate(VelocityEngine, String, String, Map, Writer)}
 * instead, following Velocity 1.6's corresponding deprecation in its own API.
 */
@Deprecated
public static void mergeTemplate(
		VelocityEngine velocityEngine, String templateLocation, Map<String, Object> model, Writer writer)
		throws VelocityException {

	VelocityContext velocityContext = new VelocityContext(model);
	velocityEngine.mergeTemplate(templateLocation, velocityContext, writer);
}
 

/**
 * Merge the specified Velocity template with the given model and write the result
 * to the given Writer.
 * @param velocityEngine VelocityEngine to work with
 * @param templateLocation the location of template, relative to Velocity's resource loader path
 * @param encoding the encoding of the template file
 * @param model the Map that contains model names as keys and model objects as values
 * @param writer the Writer to write the result to
 * @throws VelocityException if the template wasn't found or rendering failed
 */
public static void mergeTemplate(
		VelocityEngine velocityEngine, String templateLocation, String encoding,
		Map<String, Object> model, Writer writer) throws VelocityException {

	VelocityContext velocityContext = new VelocityContext(model);
	velocityEngine.mergeTemplate(templateLocation, encoding, velocityContext, writer);
}
 

/**
 * Merge the specified Velocity template with the given model and write
 * the result to the given Writer.
 * @param velocityEngine VelocityEngine to work with
 * @param templateLocation the location of template, relative to Velocity's resource loader path
 * @param model the Map that contains model names as keys and model objects as values
 * @param writer the Writer to write the result to
 * @throws VelocityException if the template wasn't found or rendering failed
 * @deprecated Use {@link #mergeTemplate(VelocityEngine, String, String, Map, Writer)}
 * instead, following Velocity 1.6's corresponding deprecation in its own API.
 */
public static void mergeTemplate(
		VelocityEngine velocityEngine, String templateLocation, Map<String, Object> model, Writer writer)
		throws VelocityException {

	VelocityContext velocityContext = new VelocityContext(model);
	velocityEngine.mergeTemplate(templateLocation, velocityContext, writer);
}
 

/**
 * Merge the specified Velocity template with the given model and write the result
 * to the given Writer.
 * @param velocityEngine VelocityEngine to work with
 * @param templateLocation the location of template, relative to Velocity's resource loader path
 * @param encoding the encoding of the template file
 * @param model the Map that contains model names as keys and model objects as values
 * @param writer the Writer to write the result to
 * @throws VelocityException if the template wasn't found or rendering failed
 */
public static void mergeTemplate(
		VelocityEngine velocityEngine, String templateLocation, String encoding,
		Map<String, Object> model, Writer writer) throws VelocityException {

	VelocityContext velocityContext = new VelocityContext(model);
	velocityEngine.mergeTemplate(templateLocation, encoding, velocityContext, writer);
}