jsp首页静态化
应用背景： 网站首页是网站访问频度最大的页面，同样这个页面承载的信息也是最多与广泛的。而这些信息对及时行要求也不是特别高（一般一天一个更新）。这种情况下应用缓存静态化比较适合。
代码流程：
关键代码：
本代码以jsp为例，其实还可以用freemarker等模板语言，但本人认为页面静态化属于后期优化工作，目前jsp应用要比freemarker要广泛，所以jsp更具有意义。
protected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException{//实际中这个路径会根据参数在一定规则的计算下得到，保证其唯一性File f = new File("/htmls/test.html");if (!f.exists()){//加工数据，实际中会调用servicerequest.setAttribute("name","测试");String content = JspUtil.getHtml(request, response,"/index.jsp");FileUtil.save(content, "/htmls", null, "test.html");}StringBuffer sb = new StringBuffer();FileReader fr = new FileReader(f);BufferedReader br = new BufferedReader(fr);String str = null;while ((str = br.readLine()) != null){sb.append(str);}fr.close();br.close();response.setCharacterEncoding("utf-8");PrintWriter out = response.getWriter();out.print(sb.toString());out.flush();}public class JspUtil{public static String getHtml(HttpServletRequest request,HttpServletResponse response, String jsp) throws ServletException,IOException{FileCaptureResponseWrapper fileCaptureResponseWrapper = new FileCaptureResponseWrapper(response);request.getRequestDispatcher(jsp).forward(request,fileCaptureResponseWrapper);return fileCaptureResponseWrapper.toString();}public static class FileCaptureResponseWrapper extendsHttpServletResponseWrapper{private CharArrayWriter writer;public FileCaptureResponseWrapper(HttpServletResponse response){super(response);this.writer = new CharArrayWriter();}public PrintWriter getWriter(){return new PrintWriter(writer);}@Overridepublic String toString(){String result = writer.toString();writer.flush();writer.close();return result;}}}