Tomcat Configuration 301 redirection (urlrewrite URL rewrite)

Tomcat by default the domain name without www will not jump to the domain name with www, and can not be configured as Apache. htaccess to achieve. If you want to redirect the domain name without "www" to the domain name with "www", and do not want to write code, you can use Urlrewritefilter to implement it.

1. Introduction

Urlrewritefilter is a web filter for overwriting URLs, similar to Apache's mod_rewrite. Applies to any Web application server (such as tomcat,jboss,jetty,resin,orion, etc.). Its typical application is to static dynamic URLs, so that search engine crawler crawl your dynamic Web pages.

2. Download

Download Urlrewritefilter

wget Http://urlrewritefilter.googlecode.com/files/urlrewritefilter-4.0.3.jar

And put it under Tomcat's web-inf/lib.

3. Configure Tomcat

Edit Web-inf/web.xml Join before other servlet mapping

<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>

4. Add a Jump Rule

Create a new Urlrewite.xml file under Web-inf and join the jump rule

<urlrewrite>  <rule>      <name>seo redirect</name>      <condition name= "host" Operator= "NotEqual" >^www.example.com</condition>      <condition name= "host" operator= "NotEqual" >^ Localhost</condition>      <from>^/(. *) </from>      <to type= "Permanent-redirect" last= "true" >http://www.example.com/$1</to>  </rule></urlrewrite>

Reference articles

http://nematodes.org/martin/2010/02/04/301-permanent-redirect-with-tomcat-howto/

http://tuckey.org/urlrewrite/

Tomcat Configuration 301 redirection (urlrewrite URL rewrite)