jsp 用urlrewrite 实现URL 重写
时间:2010-06-21 来源:tessykandy
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是否看到别人的网站网址名都不带后缀名比较酷,比如qq空间的地址,其实用urlrewrite这个包很容易就实现了。
下面是使用说明:
1.下载urlrewrite,官方下载地址:http://tuckey.org/urlrewrite/dist/urlrewritefilter-2.6.zip
2.解压缩文件,压缩包内文件copy到项目中(压缩包位置 -> 项目位置):
urlrewrite-2.6.0-src/webapp/WEB-INF/lib/urlrewrite-2.6.0.jar -> WebRoot/WEB-INF/lib/urlrewrite-2.6.0.jar
urlrewrite-2.6.0-src/webapp/WEB-INF/urlrewrite.xml -> WebRoot/WEB-INF/urlrewrite.xml
3.将以下代码添加到web.xml里
<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> </filter-mapping> 4.修改urlrewrite.xml
<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE urlrewrite PUBLIC "-//tuckey.org//DTD UrlRewrite 2.6//EN" "http://tuckey.org/res/dtds/urlrewrite2.6.dtd"> <!-- Configuration file for UrlRewriteFilter http://tuckey.org/urlrewrite/ --> <urlrewrite> <rule> <from>^/([a-z]+)$</from> <to type= "forward" >/world.jsp?id=$1</to> </rule> <rule> <from>^/world/(.*)$</from> <to>/world.jsp?tid=$1</to> </rule> <rule> <from>^/(.*).html$</from> <to>/test1/$1.jsp</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> </urlrewrite> rule是url重写规则,from是显示出来的地址,to是映射的实际地址,$1是重写参数,可以为多个,()里是匹配的正则表达式.
好了,在项目中新建world.jsp,启动tomcat,输入
http://localhost:8080/mysite/world/1
mysite是你的项目名
实际上访问的是http://localhost:8080/mysite/world.jsp?tid=1
这样就简单的实现了伪静态的效果 当使用时发现重写后,filterChain上只有一个urlrewritefilter,而没有经过smartUrls就发到了请求的资源,得到的自然是一个404错误。于是我参看urlrewritefilter的源代码发现,如果重写url成功的话,将会调用RequestDispatcher的forward方法转发到资源,而重写不成功或者是没有重写才会调用filterChain.dofilter。所以struts2的filter-mapping应该这样配置
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>FORWARD</dispatcher>
</filter-mapping>
然后就 OK 了
最后说明一点,这要在支持servlet2.4以上规范的容器中才气作用,因为servlet2.3规范里面,过滤器只支持request过滤,不支持转发之类的过滤
下面是使用说明:
1.下载urlrewrite,官方下载地址:http://tuckey.org/urlrewrite/dist/urlrewritefilter-2.6.zip
2.解压缩文件,压缩包内文件copy到项目中(压缩包位置 -> 项目位置):
urlrewrite-2.6.0-src/webapp/WEB-INF/lib/urlrewrite-2.6.0.jar -> WebRoot/WEB-INF/lib/urlrewrite-2.6.0.jar
urlrewrite-2.6.0-src/webapp/WEB-INF/urlrewrite.xml -> WebRoot/WEB-INF/urlrewrite.xml
3.将以下代码添加到web.xml里
<filter> <filter-name>UrlRewriteFilter</filter-name> <filter-class> org.tuckey.web.filters.urlrewrite.UrlRewriteFilter </filter-class> </filter> <filter-mapping> <filter-name>UrlRewriteFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> 4.修改urlrewrite.xml
<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE urlrewrite PUBLIC "-//tuckey.org//DTD UrlRewrite 2.6//EN" "http://tuckey.org/res/dtds/urlrewrite2.6.dtd"> <!-- Configuration file for UrlRewriteFilter http://tuckey.org/urlrewrite/ --> <urlrewrite> <rule> <from>^/([a-z]+)$</from> <to type= "forward" >/world.jsp?id=$1</to> </rule> <rule> <from>^/world/(.*)$</from> <to>/world.jsp?tid=$1</to> </rule> <rule> <from>^/(.*).html$</from> <to>/test1/$1.jsp</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> </urlrewrite> rule是url重写规则,from是显示出来的地址,to是映射的实际地址,$1是重写参数,可以为多个,()里是匹配的正则表达式.
好了,在项目中新建world.jsp,启动tomcat,输入
http://localhost:8080/mysite/world/1
mysite是你的项目名
实际上访问的是http://localhost:8080/mysite/world.jsp?tid=1
这样就简单的实现了伪静态的效果 当使用时发现重写后,filterChain上只有一个urlrewritefilter,而没有经过smartUrls就发到了请求的资源,得到的自然是一个404错误。于是我参看urlrewritefilter的源代码发现,如果重写url成功的话,将会调用RequestDispatcher的forward方法转发到资源,而重写不成功或者是没有重写才会调用filterChain.dofilter。所以struts2的filter-mapping应该这样配置
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>FORWARD</dispatcher>
</filter-mapping>
然后就 OK 了
最后说明一点,这要在支持servlet2.4以上规范的容器中才气作用,因为servlet2.3规范里面,过滤器只支持request过滤,不支持转发之类的过滤
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