URLRewrite地址重定向的实现

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URLRewrite就是我们通常说的地址重写，用户得到的全部都是经过处理后的URL地址。其优点有：

（1）提高安全性，可以有效的避免一些参数名、ID等完全暴露在用户面前，如果用户随便乱输的话，不符合规则的话直接会返回个404或错误页面，这比直接返回500或一大堆服务器错误信息要好的多。

（2）美化URL，去除了那些比如*.do之类的后缀名、长长的参数串等，可以自己组织精简更能反映访问模块内容的URL。

（3）更有利于搜索引擎的收入，通过对URL的一些优化，可以使搜索引擎更好的识别与收录网站的信息。

实现过程：

1 参考http://blog.csdn.net/haishu_zheng/article/details/51490299，用第二种方法创建一个名为urlrewrite_demo的Maven工程。

2 文件目录结构如下图所示

3 在pom.xml中添加四个jar包：

spring-webmvc

spring-context-support

urlrewritefilter

freemarker

添加完之后的完整内容为

<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">    <modelVersion>4.0.0</modelVersion>    <groupId>urlrewrite_demo</groupId>    <artifactId>urlrewrite_demo</artifactId>    <version>0.0.1-SNAPSHOT</version>    <packaging>war</packaging>    <name>urlrewrite_demo</name>    <description />    <properties>        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>    </properties>    <dependencies>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-webmvc</artifactId>            <version>3.2.9.RELEASE</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-context-support</artifactId>            <version>3.2.9.RELEASE</version>        </dependency>        <dependency>            <groupId>org.tuckey</groupId>            <artifactId>urlrewritefilter</artifactId>            <version>4.0.3</version>        </dependency>        <dependency>            <groupId>org.freemarker</groupId>            <artifactId>freemarker</artifactId>            <version>2.3.23</version>        </dependency>        <dependency>            <groupId>javax</groupId>            <artifactId>javaee-api</artifactId>            <version>7.0</version>            <scope>provided</scope>        </dependency>    </dependencies>    <build>        <plugins>            <plugin>                <artifactId>maven-compiler-plugin</artifactId>                <version>2.3.2</version>                <configuration>                    <source>1.7</source>                    <target>1.7</target>                </configuration>            </plugin>            <plugin>                <artifactId>maven-war-plugin</artifactId>                <version>2.2</version>                <configuration>                    <version>3.1</version>                    <failOnMissingWebXml>false</failOnMissingWebXml>                </configuration>            </plugin>        </plugins>    </build></project>

4 web.xml中的完整内容为

<?xml version="1.0"encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xmlns="http://xmlns.jcp.org/xml/ns/javaee"    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaeehttp://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"    id="WebApp_ID" version="3.1">    <display-name>urlrewrite_demo</display-name>     <filter>        <filter-name>UrlRewriteFilter</filter-name>        <filter-class>org.tuckey.web.filters.urlrewrite.UrlRewriteFilter</filter-class>    </filter>    <filter-mapping>        <filter-name>UrlRewriteFilter</filter-name>        <url-pattern>/*</url-pattern>        <dispatcher>REQUEST</dispatcher>        <dispatcher>FORWARD</dispatcher>    </filter-mapping>     <servlet>        <servlet-name>dispatcher</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <init-param>            <param-name>contextConfigLocation</param-name>            <param-value>/WEB-INF/classes/config/spring/applicationContext-mvc.xml</param-value>        </init-param>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>dispatcher</servlet-name>        <url-pattern>/service/*</url-pattern>    </servlet-mapping></web-app>

5 /src/main/reources/config/spring/applicationContext-mvc.xml中的完整内容为

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xmlns:context="http://www.springframework.org/schema/context"    xmlns:aop="http://www.springframework.org/schema/aop"     xmlns:p="http://www.springframework.org/schema/p"    xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:mvc="http://www.springframework.org/schema/mvc"    xsi:schemaLocation="http://www.springframework.org/schema/beans          http://www.springframework.org/schema/beans/spring-beans-3.2.xsd          http://www.springframework.org/schema/context          http://www.springframework.org/schema/context/spring-context-3.2.xsd          http://www.springframework.org/schema/aop          http://www.springframework.org/schema/aop/spring-aop-3.2.xsd          http://www.springframework.org/schema/tx          http://www.springframework.org/schema/tx/spring-tx-3.2.xsd          http://www.springframework.org/schema/mvc            http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">     <!-- 有 @Controller注解的表现层控制器组件 -->    <context:component-scan base-package="com.zheng.controller" />    <!-- 配置freeMarker模板加载地址 --><bean id="freemarkerConfig" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer"><!-- 视图解析器在/WEB-INF/views/路径下扫描视图文件 --><property name="templateLoaderPath" value="/WEB-INF/views/" /><property name="freemarkerSettings" ref="freemarkerConfiguration" />   </bean>    <!-- 配置Freemarker属性文件路径 -->    <bean id="freemarkerConfiguration" class="org.springframework.beans.factory.config.PropertiesFactoryBean">        <property name="location" value="classpath:config/properties/freemarker.properties"/>    </bean>      <!-- 配置freeMarker视图解析器 -->    <bean id="freemakerViewResolver" class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">        <property name="viewClass" value="org.springframework.web.servlet.view.freemarker.FreeMarkerView"/>        <property name="suffix" value=".ftl" />         <property name="contentType" value="text/html; charset=UTF-8" />       </bean>    </beans>

6 /src/main/resources/config/properties/freemarker.properties中的完整内容为

tag_syntax=auto_detectclassic_compatible=truewhitespace_stripping=truetemplate_update_delay=2default_encoding=UTF-8output_encoding=UTF-8url_escaping_charset=UTF-8locale=zh_CNdate_format=yyyy-MM-ddtime_format=HH:mm:ssdatetime_format=yyyy-MM-dd HH\:mm\:ss

7 /src/main/java/com/zheng/controller/TestController.java中的完整代码为

package com.zheng.controller; import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping; @Controller@RequestMapping("/login")public class TestController {    @RequestMapping("/toLoginIndex")    public String toLoginIndex(){        return "/test";    }}

8 /src/main/webapp/WEB-INF/views/test.ftl中的完整代码为：

<html><head>  <title>Insert title here</title></head><body>  Hello, World!</body></html>

9 /src/main/webapp/WEB-INF/urlrewrite.xml中的完整代码为

<?xml version="1.0" encoding="utf-8"?>  <!DOCTYPE urlrewrite PUBLIC "-//tuckey.org//DTD UrlRewrite 4.0//EN" "http://www.tuckey.org/res/dtds/urlrewrite4.0.dtd"><urlrewrite decode-using="UTF-8"><rule><from>/$</from><to>/service/login/toLogin</to></rule></urlrewrite>

注意：这里的<from>和<to>决定了

http://localhost:8080/urlrewrite_demo 映射为

http://localhos:8080/urlrewrite_demo/service/login/toLoginIndex

假如<from>/$</from>改为<from>/abc</from>，则

http://localhost:8080/urlrewrite_demo/abc 映射为

http://localhos:8080/urlrewrite_demo/service/login/toLoginIndex

10 将urlrewrite_demo添加进Tomcat7中并运行