Home Web Front-end HTML Tutorial 利用Freemarker生成html静态页面_html/css_WEB-ITnose

利用Freemarker生成html静态页面_html/css_WEB-ITnose

Jun 21, 2016 am 08:51 AM

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  
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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();	}
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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;
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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");	}
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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。

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