大数据学习总结记录—页面静态化技术（Freemarker/velocity）& 网站伪静态（UrlRewriteFilter）

 1 public class Hello { 2 ?3 ????public static void main(String[] args) throws IOException, TemplateException { 4 ????????//1.创建Configuration实例 -- 配置 5 ????????Configuration conf=new Configuration(Configuration.VERSION_2_3_23); 6 ????????conf.setNumberFormat("##,###"); 7 ????????conf.setBooleanFormat("男孩,女孩"); 8 ????????conf.setDateFormat("yyyy年MM月dd日"); 9 ????????//2.设置模板加载路径10 ????????File dir=new File("F:\\idea_workspase\\freemarker\\src\\main\\resources");11 ????????conf.setDirectoryForTemplateLoading(dir);12 ????????//conf.setClassForTemplateLoading(FreemarkerDemo.class,"");13 14 ????????//3.准备数据模型15 ????????Map<String,Object> dataModel=new HashMap<String, Object>();16 ????????dataModel.put("name","李四");17 ????????Boolean b = true;18 ????????dataModel.put("sex",b);19 20 ????????//4.获取模板对象21 ????????Template template = conf.getTemplate("Hello.ftl", "utf-8");22 23 ????????//5.将数据+模板= 输出24 ????????template.process(dataModel,new PrintWriter(System.out));25 26 ????}27 }

1 hello world!!2 ${name}3 ${sex}

 1 <?xml version="1.0" encoding="UTF-8"?> 2 <project xmlns="http://maven.apache.org/POM/4.0.0" 3 ?????????xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 ?????????xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 5 ????<modelVersion>4.0.0</modelVersion> 6 ?7 ????<groupId>com.baizhi</groupId> 8 ????<artifactId>freemarker</artifactId> 9 ????<version>1.0-SNAPSHOT</version>10 11 ????<dependencies>12 ????????<!-- https://mvnrepository.com/artifact/org.freemarker/freemarker -->13 ????????<dependency>14 ????????????<groupId>org.freemarker</groupId>15 ????????????<artifactId>freemarker</artifactId>16 ????????????<version>2.3.23</version>17 ????????</dependency>18 ????</dependencies>19 20 21 </project>

 ?1 ===============ProductController=============== ?2 @Controller ?3 @RequestMapping(value = "/product") ?4 public class ProductController { ?5 ????@RequestMapping(value = "/showProduct") ?6 ????public String showProduct(Integer id, String path, ModelMap modelMap, HttpServletRequest request) throws IOException, TemplateException { ?7 ????????modelMap.put("id",id); ?8 ????????modelMap.put("name","测试商品"); ?9 ????????modelMap.put("createTime",new Date()); 10 ????????//考虑将该方法设置为异步 11 ????????String templateDir=request.getSession().getServletContext().getRealPath("/views"); 12 ????????String templateName="product.ftl"; 13 ?14 ????????String dist=request.getSession().getServletContext().getRealPath(path); 15 ????????System.out.println(dist); 16 ????????HtmlGenerateUtil.genHTML(templateDir,templateName,modelMap,dist); 17 ?18 ????????return "product"; 19 ????} 20 ?21 ????/*@RequestMapping(value = "/show_{id}.html") 22 ????public String showProduct2(@PathVariable(value = "id") Integer id, String path, ModelMap modelMap, HttpServletRequest request){ 23 ????????modelMap.put("id",id); 24 ????????modelMap.put("name","测试商品"); 25 ????????modelMap.put("createTime",new Date()); 26 ?27 ????????return "product"; 28 ????}*/ 29 } 30 ===============CondationFilter================ 31 public class CondationFilter extends UrlRewriteFilter { 32 ?33 ????@Override 34 ????public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { 35 ????????HttpServletRequest req= (HttpServletRequest) request; 36 ???????if(req.getRequestURI().endsWith("html")){ 37 ???????????//先判断请求资源是否存在，如果不存在走重写逻辑 38 ???????????boolean isExists = isStaticResourceExits((HttpServletRequest) request); 39 ???????????System.out.println(isExists); 40 ???????????if(!isExists){ 41 ???????????????super.doFilter(request, response, chain); 42 ???????????}else{ 43 ???????????????chain.doFilter(request,response); 44 ???????????} 45 ???????}else{ 46 ???????????chain.doFilter(request,response); 47 ???????} 48 ?49 ????} 50 ?51 ????/** 52 ?????* 判断静态资源是否纯在 53 ?????* @param request 54 ?????* @return 55 ?????*/ 56 ????public static boolean isStaticResourceExits(HttpServletRequest request){ 57 ????????String requestURI = request.getRequestURI(); 58 ?????????//System.out.println("requestURI:"+requestURI);// ??/SpringMVCDemo/products/product_1.html 59 ????????int indexOf = requestURI.indexOf("/", 1); 60 ????????String requestFileURI =requestURI.substring(indexOf);// ??/products/product_1.html 61 ????????//System.out.println("requestURI:"+requestFileURI); 62 ????????// ?System.out.println("requestFileURI(转换):"+requestFileURI); 63 ????????//将网络路劲转换为 物理路径 64 ????????String realPath = request.getSession().getServletContext().getRealPath(requestFileURI); 65 ????????//System.out.println(realPath+"---"); 66 ????????File file=new File(realPath); 67 ????????//System.out.println(file.getAbsolutePath()); 68 ???????if(file.exists()){ 69 ???????????//判断文件生成时间 5s 内 文件 隐藏 70 ???????????if((System.currentTimeMillis()-file.lastModified())<5000){ 71 ???????????????return false; 72 ???????????} 73 ???????????//文件 最多存活 15秒 74 ???????????System.out.println(System.currentTimeMillis()+" ?"+file.lastModified()+" "+(System.currentTimeMillis()-file.lastModified())); 75 ???????????if((System.currentTimeMillis()-file.lastModified())>15000){ 76 ???????????????return false; 77 ???????????} 78 ???????????return true; 79 ???????} 80 ???????return false; 81 ????} 82 } 83 ============== HtmlGenerateUtil =============== 84 public class HtmlGenerateUtil { 85 ????public static void genHTML(String templateDir, String templateName, ModelMap modelMap, String dist) throws IOException, TemplateException { 86 ????????Configuration conf=new Configuration(Configuration.VERSION_2_3_23); 87 ????????File dir = new File(templateDir); 88 ????????conf.setDirectoryForTemplateLoading(dir); 89 ?90 ????????Template template=conf.getTemplate(templateName,"utf-8"); 91 ????????File file=new File(dist); 92 ????????if(file.exists()&&(System.currentTimeMillis()-file.lastModified())<15000){ 93 ????????????return; 94 ????????} 95 ????????FileOutputStream fos=new FileOutputStream(dist); 96 ?97 ????????OutputStreamWriter osw=new OutputStreamWriter(fos,"utf-8"); 98 ????????template.process(modelMap,osw); 99 ????????osw.close();100 ????????fos.close();101 ????}102 }103 ============product.ftl模板文件=================104 105 <html>106 <head>107 108 ????<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">109 ????110 ????<title>product 商品static</title>111 </head>112 <body>113 <h2>商品【${id}】详情</h2>114 <h3>名字:${name}</h3>115 <h3>创建时间:${createTime?date}</h3>116 117 </body>118 </html>119 ============mvc-servlet.xml==================120 <?xml version="1.0" encoding="UTF-8"?>121 <beans xmlns="http://www.springframework.org/schema/beans"122 ???????xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"123 ???????xmlns:mvc="http://www.springframework.org/schema/mvc"124 ???????xmlns:context="http://www.springframework.org/schema/context"125 ???????xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">126 127 ????<!--视图解析-->128 ????<bean >129 ????????<property name="prefix" value="/"></property>130 ????????<property name="suffix" value=".jsp"></property>131 ????</bean>132 ????<!--开启SpingMVC注解驱动-->133 ????<mvc:annotation-driven />134 ????<!--静态资源-->135 ????<mvc:resources mapping="/**" location="/"/>136 ????<!--文件上传-->137 ????<bean  >138 ????????<property name="maxUploadSize" value="10240000"></property>139 ????</bean>140 ????<!--扫描controller组件-->141 ????<context:component-scan base-package="com.baizhi.controller"/>142 </beans>143 ===============urlrewrite.xml=================144 <?xml version="1.0" encoding="utf-8"?>145 <!DOCTYPE urlrewrite PUBLIC "-//tuckey.org//DTD UrlRewrite 4.0//EN"146 ????????"http://www.tuckey.org/res/dtds/urlrewrite4.0.dtd">147 <urlrewrite>148 149 ????<rule >150 ????????<from>/test/status/</from>151 ????????<to type="redirect">%{context-path}/rewrite-status</to>152 ????</rule>153 154 ????<rule match-type="regex">155 ????????<from>/product/product_([0-9]+).html</from>156 ????????<to type="forward">/product/showProduct?id=$1&amp;path=$0</to>157 ????</rule>158 159 </urlrewrite>160 =================web.xml==================161 <?xml version="1.0" encoding="UTF-8"?>162 <web-app version="2.5"163 ?????????xmlns="http://java.sun.com/xml/ns/javaee"164 ?????????xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"165 ?????????xsi:schemaLocation="http://java.sun.com/xml/ns/javaee166 ????http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">167 168 ??<display-name>Archetype Created Web Application</display-name>169 ??<!--初始化参数-->170 ??<context-param>171 ????<param-name>contextConfigLocation</param-name>172 ????<param-value>classpath*:applicationContext.xml</param-value>173 ??</context-param>174 ??<!--配置字符乱码filter-->175 ??<filter>176 ????<filter-name>encode</filter-name>177 ????<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>178 ????<init-param>179 ??????<param-name>encoding</param-name>180 ??????<param-value>utf-8</param-value>181 ????</init-param>182 ??</filter>183 ??<filter-mapping>184 ????<filter-name>encode</filter-name>185 ????<url-pattern>/*</url-pattern>186 ??</filter-mapping>187 ??<filter>188 ????<filter-name>UrlRewriteFilter</filter-name>189 ????<filter-class>com.baizhi.filter.CondationFilter</filter-class>190 ??</filter>191 ??<filter-mapping>192 ????<filter-name>UrlRewriteFilter</filter-name>193 ????<url-pattern>/*</url-pattern>194 ????<dispatcher>REQUEST</dispatcher>195 ????<dispatcher>FORWARD</dispatcher>196 ??</filter-mapping>197 ??<!--配置监听器-->198 ??<listener>199 ????<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>200 ??</listener>201 ??<!--配置servlet-->202 ??<servlet>203 ????<servlet-name>mvc</servlet-name>204 ????<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>205 ????<load-on-startup>0</load-on-startup>206 ??</servlet>207 ??<servlet-mapping>208 ????<servlet-name>mvc</servlet-name>209 ????<url-pattern>/</url-pattern>210 ??</servlet-mapping>211 </web-app>212 =================product.jsp================213 <%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>214 <html>215 <head>216 ????<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">217 ????<title>product 商品详情页</title>218 </head>219 <body>220 <h2>商品【${id}】详情</h2>221 <h3>名字:${name}</h3>222 <h3>创建时间:${createTime}</h3>223 224 </body>225 </html>226 ===================pom.xml=================227 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns: