freemarker生成页面字符串

    /**
     * 按模板文件生成页面字符串。
     * @param context
     * @param data 数据映射对象。
     * @param templatePath 模板文件的路径，和struts配置文件里的相同。
     * @return
     */
    private String createHTML(ServletContext context, Map<String, Object> data, String templatePath){
        Configuration freemarkerCfg = new Configuration();
        freemarkerCfg.setServletContextForTemplateLoading(context, "/");
        freemarkerCfg.setEncoding(Locale.getDefault(), "UTF-8");
        Template template = null;
        try {
            template = freemarkerCfg.getTemplate(templatePath, "UTF-8");
            template.setEncoding("UTF-8");
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        if(null != template ){
            StringWriter out = new StringWriter();
            try {
                template.process(data, out);
            } catch (TemplateException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return out.getBuffer().toString();
        }
        return null;
    }