liferay静态化.doc

我作了一个测试，把Liferay中cms部分增加了生成html的功能，提供给用户访问，这样在一定程度上可以减少10%数据库的负载，因为在互联网中 匿名者访问占50%，其余的50%主要是做那些互动的操作，比如blog，bbs，电子商务.我们把一些page让用户在可选择的情况下进行 generating static HTML，当匿名者访问这个页面的时候，我们就把html的url response给browser.我的这个测试这样做的首先把工具类做成一个监听服务ServletContextListener,在perties设置一个values来确定how long again run the ServletContextListener.然后admin根据需要选择guest group中的页面在page setting的功能中选择 generating static HTML,如图.最后,就是看我们的生成的页面了. 这样,用户在使用liferay的情况下,当访问量很大的情况下,就能有效降低服务器的负载.首先增加一个自动生成代码的调度。12package com.blueauk.util;3import javax.servlet.*;45/*6 * 自动监听器7 * author stephen8 *9 */10public class GeneratingListener implements ServletContextListener 11 12 /*13 * 自动监听时钟14 */15 private GeneratingTimer rt = null;16 17 public void contextInitialized(ServletContextEvent event) 18 String status = Properties listener start .;19 event.getServletContext().log(status);20 System.out.println(status);21 22 / 激活自动监听时钟23 rt = new GeneratingTimer(15, event.getServletContext();24 rt.start();25 26 27 public void contextDestroyed(ServletContextEvent event) 28 String status = Properties listener stop .;29 event.getServletContext().log(status);30 System.out.println(status);31 32 / 停止自动监听时钟33 if (rt != null) 34 rt.stop();35 36 3712package com.blueauk.util;34import java.util.*;5import javax.servlet.*;67/*8 * 自动监听时钟9 * author stephen10 *11 */1213public class GeneratingTimer 14 private final Timer timer = new Timer();15 private final int sec;16 private ServletContext context = null;1718 public GeneratingTimer(int seconds, ServletContext context) 19 sec = seconds;20 this.context = context;21 2223 /*24 * 启动自动监听任务25 */26 public void start() 2728 / 取得当前日期时间29 Date date = new Date();3031 / 执行自动监听计划32 timer.schedule(new GeneratingTask(this.context), date, 60*60* 1000);33 3435 /*36 * 停止自动监听任务37 */38 public void stop() 39 timer.cancel();4041 42432package com.blueauk.util;3import java.io.IOException;4import java.io.*;5import java.util.*;67import javax.servlet.*;8import com.blueauk.util.Tools;9/*10 * 自动监听任务11 * 12 * author stephen13 * 14 */1516public class GeneratingTask extends TimerTask 17 18 private ServletContext context = null;19 /*20 * 配置文件的最后更新时间21 */22 private long lastModified = 0;23 24 private long count=0;25 /*26 * 构造一个自动更新任务27 * 28 * param context29 */30 public GeneratingTask(ServletContext context)31 this.context = context;32 System.out.println(A task instance is created now.); / 任务在整个33 / application34 / 周期内只创建一次。35 36 37 /*38 * 每次执行任务时显示一个随机数。39 */40 public void todoTestRandom()41 System.out.println(Task running);42 context.setAttribute(random, String.valueOf(Math.random();43 System.out.println(String)context.getAttribute(random);44 45 46 /*47 * 监听配置文件是否被更新。48 */49 public void todoTestFileStatus()50 System.out.println(Getting file status);51 System.out.println(this.isFileUpdated(WEB-INF/platforms/perties);52 53 54 /*55 * 监听配置文件是否被更新，自动更新文件中的配置项存储到 application 变量中。56 */57 public void todo()58 String filename = WEB-INF/platforms/perties;59 if(this.isFileUpdated(filename)60 61 System.out.println(Getting properties);62 try63 this.loadProperties(test, filename);64 catch(IOException ioe)65 System.err.println(ioe.getMessage();66 67 68 System.out.println(Test value is: + this.getTestProperty(name);69 70 71 public void run() 72 System.out.println(run-:+count);73 long newCount=count;74 if(newCount0)75 Tools tools=new Tools();76 tools.startGen();77 this.count=newCount+1;78 else79 this.count=newCount+1;80 81 82 83 84 /*85 * 判断物理文件是否已被更新86 * 87 * param filename88 * 物理文件名89 * return 是 true 否 false90 */91 private boolean isFileUpdated(String filename)92 File file = new File(context.getRealPath(filename);93 if(file.isFile()94 long lastUpdateTime = file.lastModified();95 if(lastUpdateTime this.lastModified)96 System.out.println(The properties file was modified.);97 this.lastModified = lastUpdateTime;98 return true;99 else100 System.out.println(The properties file was not modified.);101 return false;102 103 else104 System.out.println(The path does not point to a file.);105 return false;106 107 108 109 /*110 * 获取配置文件111 * 112 * param key113 * param filename114 * return115 */116 public void loadProperties(String key, String filename) throws IOException117 Properties prop = new Properties();118 InputStream stream = context.getResourceAsStream(filename);119 prop.load(stream);120 if(stream!=null)121 stream.close();122 123 context.setAttribute(key, prop);124 125 126 /*127 * 从 application 取配置项的值128 * 129 * param key130 * 配置项的键名131 * return 配置项的值132 */133 public String getTestProperty(String key)134 Properties prop = (Properties)context.getAttribute(test);135 if(prop=null)136 return null;137 else138 return (String)prop.get(key);139 140 1411422package com.blueauk.util;34import java.io.*;5import .*;6import java.util.*;7import javax.servlet.*;8import javax.servlet.http.HttpServletRequest;910import com.liferay.portal.kernel.util.StringMaker;11import com.liferay.portal.model.Layout;12import com.liferay.portal.service.LayoutLocalServiceUtil;13import com.liferay.portal.theme.ThemeDisplay;14import com.liferay.portal.util.PortalUtil;1516public class Tools 17 final static Object lock = new Object();1819 List urlall = new ArrayList();2021 public void startGen() 22 try 2324 String dir = (Tools.class.getClassLoader().getResource()25 .toString();26 String endDir = / + dir.substring(6, dir.length() - 16);27 File file = new File(endDir);28 if (!file.exists() 29 file.mkdir();30 31 htmlAll();32 List genHtmlURL = urlall;3334 for (int i = 0; i genHtmlURL.size(); i+) 35 String Url = (String) genHtmlURL.get(i);36 String filedir = htmlmkdir(endDir + Url);37 makeHtml( + Url, + filedir38 + Url.substring(Url.lastIndexOf(/) + 1) + .html);39 40 catch (Exception e) 4142 4344 4546 private void _buildSiteMapURL(List layouts, int displayDepth, int curDepth,47 ThemeDisplay themeDisplay, StringMaker sm) throws Exception 4849 for (int i = 0; i curDepth) 54 _buildSiteMapURL(layout.getChildren(), displayDepth,55 curDepth + 1, themeDisplay, sm);56 57 5859 6061 private void htmlAll() 62 try 63 List rootLayoutsURL = null;64 StringMaker sm = new StringMaker();65 rootLayoutsURL = LayoutLocalServiceUtil.getLayouts(14, false, 0);66 ThemeDisplay themeDisplayURL = new ThemeDisplay();67 _buildSiteMapURL(rootLayoutsURL, 0, 1, themeDisplayURL, sm);6869 catch (Exception e) 7071 7273 7475 private static void makeHtml(String page, String filePath) 76 makeHtml(page, filePath, UTF-8);77 7879 private static String htmlmkdir(String url) 8081 String bb = url.replace(/web/guest, htmls);8283 String aaa = bb.split(/);8485 String dir = ;86 for (int i = 0; i 0) 120 bw.write(line);121 bw.newLine();122 123 124 catch (Exception e) 125 e.printStackTrace();126 finally 127 try 128 br.close();129 bw.close();130 huc.disconnect();131 catch (Exception e) 132 e.printStackTrace();133 134 135 136 137在FriendlyU