URL重写的目的不言而喻,首先引入urlrewrite-4.0.0.jar【或者其他版本】包,可以从官方下载。
1、web.xml【官方配置】
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name></display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- URL重写配置 -->
<filter>
<filter-name>UrlRewriteFilter</filter-name>
<filter-class>org.tuckey.web.filters.urlrewrite.UrlRewriteFilter</filter-class>
<init-param>
<param-name>logLevel</param-name>
<param-value>WARN</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>UrlRewriteFilter</filter-name>
<url-pattern>/*</url-pattern><!-- 拦截所有URL -->
</filter-mapping>
</web-app>
2、urlrewrite.xml
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE urlrewrite PUBLIC "-//tuckey.org//DTD UrlRewrite 3.2//EN"
"http://tuckey.org/res/dtds/urlrewrite3.2.dtd">
<!--
Configuration file for UrlRewriteFilter
http://tuckey.org/urlrewrite/
-->
<urlrewrite>
<!--自定义匹配-->
<rule>
<!-- <from>^/admin/(.*)(.*)</from> -->
<from>admin/([0-9]+)/(.*).shtml/(.*)</from>
<to>/admin_login.jsp?id=$1&name=$2&keyword=$3</to>
</rule>
<!-- 官方示例-->
<rule>
<note>
The rule means that requests to /test/status/ will be redirected to /rewrite-status
the url will be rewritten.
</note>
<from>/test/status/</from>
<to type="redirect">%{context-path}/rewrite-status</to>
</rule>
<outbound-rule>
<note>
The outbound-rule specifies that when response.encodeURL is called (if you are using JSTL c:url)
the url /rewrite-status will be rewritten to /test/status/.
The above rule and this outbound-rule means that end users should never see the
url /rewrite-status only /test/status/ both in thier location bar and in hyperlinks
in your pages.
</note>
<from>/rewrite-status</from>
<to>/test/status/</to>
</outbound-rule>
<!--
INSTALLATION
in your web.xml add...
<filter>
<filter-name>UrlRewriteFilter</filter-name>
<filter-class>org.tuckey.web.filters.urlrewrite.UrlRewriteFilter</filter-class>
<init-param>
<param-name>logLevel</param-name>
<param-value>WARN</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>UrlRewriteFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
EXAMPLES
Redirect one url
<rule>
<from>/some/old/page.html</from>
<to type="redirect">/very/new/page.html</to>
</rule>
Redirect a directory
<rule>
<from>/some/olddir/(.*)</from>
<to type="redirect">/very/newdir/$1</to>
</rule>
Clean a url
<rule>
<from>/products/([0-9]+)</from>
<to>/products/index.jsp?product_id=$1</to>
</rule>
eg, /products/1234 will be passed on to /products/index.jsp?product_id=1234 without the user noticing.
Browser detection//浏览器检测
<rule>
<condition name="user-agent">Mozilla/[1-4]</condition>
<from>/some/page.html</from>
<to>/some/page-for-old-browsers.html</to>
</rule>
eg, will pass the request for /some/page.html on to /some/page-for-old-browsers.html only for older
browsers whose user agent srtings match Mozilla/1, Mozilla/2, Mozilla/3 or Mozilla/4.
Centralised browser detection
<rule>
<condition name="user-agent">Mozilla/[1-4]</condition>
<set type="request" name="browser">moz</set>
</rule>
eg, all requests will be checked against the condition and if matched
request.setAttribute("browser", "moz") will be called.
-->
</urlrewrite>
3、项目结构:
4、admin_login.jsp页面代码:
<body>
Admin Login Page.
<br>
<%=request.getParameter("id")%><br>
<%=request.getParameter("name")%><br>
<%=request.getParameter("keyword")%>
</body>
测试结果:
http://123.125.115.53/view/1002788.html?fromTaglist
URL重写就是首先获得一个进入的URL请求然后把它重新写成网站可以处理的另一个URL的过程。举个例子来说,如果通过 浏览器进来的URL是“UserProfile.aspx?ID=1”那么它可以被重写成 “UserProfile/1.aspx”,这样的URL,这样的网址可以更好的被网站所阅读。
如果浏览器不支持Cookie或用户阻止了所有Cookie,可以把会话ID附加在HTML页面中所有的URL上,这些页面作为响应发送给客户。这样,当用户单击URL时,会话ID被自动作为请求行的一部分而不是作为头行发送回服务器。这种方法称为URL重写(URL rewriting)。
一般来说,URL重写是支持会话的非常健壮的方法。在不能确定浏览器是否支持Cookie的情况下应该使用这种方法。然而,使用URL重写应该注意下面几点:
1.如果使用URL重写,应该在应用程序的所有页面中,对所有的URL编码,包括所有的超链接和表单的action属性值。
2.应用程序的所有的页面都应该是动态的。因为不同的用户具有不同的会话ID,因此在静态HTML页面中无法在URL上附加会话ID。
3.所有静态的HTML页面必须通过Servlet运行,在它将页面发送给客户时会重写URL。