protected void mergeFileTemplate(Template pTemplate, Context pContext, Writer pWriter)
      throws MergeTemplateException {

    Properties props = WebMacroHelper.getDefaultProperties();
    props.putAll(this.properties);

    props.setProperty("TemplateEncoding", pTemplate.getInputEncoding());
    String path = pTemplate.getResource();
    if (log.isDebugEnabled()) {
      log.debug("模板文件: \"" + path + "\" 采用WebMacro引擎进行合并.");
      log.debug("模板文件: \"" + path + "\" 输入编码方式是:" + pTemplate.getInputEncoding());
    }

    /**
     * @FIXME 由于WebMacro没有提供运行时,设置模板编码方式,所以要求每次实例化Engine,这样性能有些影响,希望以后版本
     * WebMacro会提供该方法。不过好在,是单机版本的,性能问题不大.
     */
    WM wm = WebMacroHelper.getWMEngine(props);

    org.webmacro.Context c = new org.webmacro.Context(wm.getBroker());
    Map params = pContext.getParameters();
    for (Iterator i = params.keySet().iterator(); i.hasNext(); ) {
      String key = (String) i.next();
      Object value = params.get(key);
      c.put(key, value);
    }

    org.webmacro.Template t = null;
    try {
      t = wm.getTemplate(pTemplate.getResource());
    } catch (ResourceException e) {
      final String MSG = "合并模板文件 \"" + path + "\"  失败!" + e.getMessage();
      if (log.isErrorEnabled()) {
        log.error(MSG, e);
      }
      throw new MergeTemplateException(MSG, e);
    }

    String result = null;
    try {
      //			result = t.evaluateAsString(c);
      //		} catch (PropertyException e) {
    } catch (Exception e) {
      final String MSG = "合并模板文件 \"" + path + "\"  失败!" + e.getMessage();
      if (log.isErrorEnabled()) {
        log.error(MSG, e);
      }
      throw new MergeTemplateException(MSG, e);
    }

    try {
      pWriter.write(result);
    } catch (IOException e) {
      final String MSG = "合并模板文件 \"" + path + "\"  失败!" + e.getMessage();
      if (log.isErrorEnabled()) {
        log.error(MSG, e);
      }
      throw new MergeTemplateException(MSG, e);
    }
  }
 public static void main(String[] args) {
   WebMacroTemplateEngine a = new WebMacroTemplateEngine();
   Template t = new DefaultTemplate();
   t.setResource("noservlet.wm");
   Context c = new DefaultContext();
   c.put("msg", "hello中文哦.");
   StringWriter writer = new StringWriter();
   a.mergeTemplate(t, c, writer);
   System.out.println(writer.toString());
 }