网站首页静态化

关于页面静态化的处理，自己有一下几点理解，还请多多指教。 

1、首页可以采用freemarker来静态化，也可以采用流来处理，还可以通过oscache等方式来处理。 

2、一些二级页面和一些动态页面可以采用urlrewriter来实现伪静态+缓存来实现速度上的优化。一方面可以针对seo优化，用户体验上也不错。 

3、还是针对第二点，一些二级页面和一些动态页面也都可以使用freemarker来做处理。速度上差距不大，因为2有缓存的支持。

做了个简单的例子，针对访问页面的静态化，例如访问index.jsp则生成index.html然后执行跳转。代码如下：

public void doFilter(ServletRequest request, ServletResponse response,FilterChain chain) throws IOException, ServletException {HttpServletRequest req = (HttpServletRequest) request;HttpServletResponse res = (HttpServletResponse) response;String currentURL = req.getRequestURI();// 得到访问文件名. 例如 /index.jspString targetURL = currentURL.substring(currentURL.indexOf("/", 1),currentURL.length());// 对文件名进行拆分. 先得到/index 然后在得到indexString splitName = targetURL.split("\\.")[0];String name = splitName.split("/")[1];String fileName = name + ".html";String path = protDirPath + fileName;// 判断文件是否存在. 存在的话则执行跳转. 否则执行生成.File file = new File(path);if (!file.exists()) {System.out.println("生成HTML文件,执行跳转..");PrintWriter out = response.getWriter();FileCaptureResponseWrapper responseWrapper = new FileCaptureResponseWrapper((HttpServletResponse) response);chain.doFilter(request, responseWrapper);String html = responseWrapper.toString();System.out.println(html);// 得到的html页面结果字符串responseWrapper.writeFile(path);responseWrapper.writeResponse(out);res.setHeader("REFRESH", "0;URL=" + req.getContextPath() + "/"+ fileName);} else {System.out.println("目标文件已经存在,执行跳转...");res.setHeader("REFRESH", "0;URL=" + req.getContextPath() + "/"+ fileName);}}                  

public class FileCaptureResponseWrapper extends HttpServletResponseWrapper {private CharArrayWriter output;public String toString() {return output.toString();}public FileCaptureResponseWrapper(HttpServletResponse response) {super(response);output = new CharArrayWriter();}public PrintWriter getWriter() {return new PrintWriter(output);}public void writeFile(String fileName) throws IOException {FileWriter fw = new FileWriter(fileName);fw.write(output.toString());fw.close();}public void writeResponse(PrintWriter out) {out.print(output.toCharArray());}}                  

web.xml的配置就不多说了，把过滤配上后然后即可实现所有jsp生成html，针对一些二级页面或首页来优化都不错。