Need help in URL Rewrite using Tuckey URL Rewrite

问题:

I want to rewrite the URL for my Struts2 based application(currently in development environment). I have searched for it and found about Tuckey URL Rewrite and set it up in my project. Now i want my login url which is currently http://localhost:8080/MyProject/loadLogin.action (I am using Wildcard mapping in Struts2) to look like http://localhost:8080/login. Below is my configuration code:

struts.xml:

<action name="*Login" method="{1}" class="com.myproject.controller.LoginController"> 
            <result name="login" type="tiles">mylogin</result>
       </action>

web.xml:

 <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>DEBUG</param-value>
            </init-param>
</filter>
<filter-mapping>
    <filter-name>UrlRewriteFilter</filter-name>
    <url-pattern>/*</url-pattern>
    <dispatcher>REQUEST</dispatcher>
    <dispatcher>FORWARD</dispatcher>
</filter-mapping>

  <filter>
      <filter-name>struts2</filter-name>
      <filter-class>
         org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
      </filter-class>
   </filter>
   <filter-mapping>
      <filter-name>struts2</filter-name>
      <url-pattern>/*</url-pattern>
   </filter-mapping>

Now here's the urlrewrite.xml which has the rule and I do not know if I have configured the rule correctly:

<?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">

<!--

    Configuration file for UrlRewriteFilter
    http://www.tuckey.org/urlrewrite/

-->
<urlrewrite>

       <rule>
            <from>^/*</from>
            <to type="redirect">/login</to>
        </rule>


</urlrewrite>

回答1:

To rewrite to this URL http://localhost:8080/login you have to deploy urlrewrite filter to the root context. But the application is running at the /MyProject context. You can't have both filters in the same application deployed to the same context to perform desired.

How rewrite URL works: first you access the URL that you want to show, then urlrewrite filter searches the rules and if it find the match the rule is executed and request is forwarded (by default) to the new URL which is hidden for the user.

If you use type="redirect" in the <to> tag the new URL will show up, because it means

Requests matching the "conditions" and the "from" for this rule will be HTTP redirected. This is the same a doing: HttpServletResponse.sendRedirect([to value]))

To rewrite URL you should use this rule deployed to the app at the root context

<rule>
  <from>^/login$</from>
  <to type="redirect">/MyProject/loadLogin.action</to>
</rule>