利用Freemarker生成html静态页面_html/css_WEB-ITnose
通过java生成文件毫无疑问会使用到流,对于流在该文章中不做重点解释。首先我们做一个准备工作,搭建你的项目,采用Freemarker模版技术,首先给大家展示一个Freemarker文件。
预定价格: ${trip.price!'面议'}元 目的地: ${trip.toCity!''} 行程天数:${trip.tripDay!'待定'} 提前预定天数: 建议提前一周报名 出团日期:${trip.toTirpTime} 友谊
模版建好了,我们接下来写一个工具类,通过该工具类生成html文件。FreeMarkerUtil.java 此处我们只列出主要用到的方法。
public static void writeTo(ServletContext context, Mapmap, String templatePath, String templateName, String htmlPath) throws IOException, TemplateException { Configuration freemarkerCfg = new Configuration(); // 设置要解析的模板所在的目录,并加载模板文件 freemarkerCfg.setServletContextForTemplateLoading(context, templatePath); freemarkerCfg.setEncoding(Locale.getDefault(), "UTF-8"); // 获取模板,并设置编码方式 Template template = freemarkerCfg.getTemplate(templateName); template.setEncoding("UTF-8"); File htmlFilel = new File(context.getRealPath("") +File.separator +"html"+File.separator+"channel"); if(! htmlFilel.exists()) { htmlFilel.mkdir(); } File htmlFile = new File(context.getRealPath("") + File.separator + htmlPath); Writer out = new BufferedWriter(new OutputStreamWriter( new FileOutputStream(htmlFile), "UTF-8")); // 合并数据模型与模板 template.process(map, out); out.flush(); out.close(); }
需要导入的类,这些都在freemarker-2.3.16.jar 包中了:
import freemarker.template.Configuration;import freemarker.template.DefaultObjectWrapper;import freemarker.template.Template;import freemarker.template.TemplateException;
接下来就是业务处理了,其实很简单的没有任何的技术含量,这个功能也是在使用Freemarker做模版视图较多使用的,此处为了让学习的人看的明白,业务和控制层都写在一个方法了,容易理解。
public ModelAndView doAdd(HttpServletRequest request, MultipartHttpServletRequest filerequest, Trip trip) throws ParseException { Listfile1 = filerequest.getFiles("file1"); Listfile2 = filerequest.getFiles("file2"); if (file1.size() > 0) { String titleImg = ""; titleImg = uploadImage(request, file1.get(0)); if (null != titleImg && !titleImg.equals("")) { trip.setImgUrl(titleImg); } } if (file2.size() > 0) { String titleImg = ""; titleImg = uploadImage(request, file2.get(0)); if (null != titleImg && !titleImg.equals("")) { trip.setImgUrl2(titleImg); } } trip.setInputTime(new Date()); File directory = new File(request.getSession().getServletContext() .getRealPath("/") + "trip"); if (!directory.exists()) { directory.mkdirs(); } DateFormat format1 = new SimpleDateFormat("yyyyMMddhhmm"); String dateStr = format1.format(new Date()); String html = "trip" + File.separator + trip.getChannelId() + "-" + trip.getCityId() + "-" + dateStr + ".html"; trip.setUrlStr(html); PageBean pageBean3 = tripService.getTriplist(0, 10); ListtripList = pageBean3.getBeanList(); PageBean pageBean2 = newsService.getTripNewslist(1, 10); ListtripNewsList = pageBean2.getBeanList(); PageBean pageBean22 = newsService.getTripNews2list(1, 10); ListtripNews2List = pageBean22.getBeanList(); Map map = new HashMap(); map.put("tripNews2List", tripNews2List); map.put("tripList", tripList); map.put("tripNewsList", tripNewsList); map.put("trip", trip); map.put("base", request.getContextPath()); try { FreeMarkerUtil.writeTo(request.getSession().getServletContext(), map, "/templates", "trip.ftl", html); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (TemplateException e) { // TODO Auto-generated catch block e.printStackTrace(); } tripService.save(trip); return new ModelAndView("redirect:/trip/page.shtml?page_now=1"); }
好了,这样你就可以写你的静态网站了。
也许有人现在也不知道生成静态的作用到底是什么呢?
1、访问的时候不需要在操作数据库了。
2、对于搜索引擎来说html静态页面更加的友好。
3、访问速度变的很快。
等等,大家自己感受一下。有需要可留言要源码demo。
本文地址:http://www.osblog.net/code/117.html

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