8 Replies Latest reply on Jul 15, 2019 10:07 AM by loganheights

    how to use rewrite url in jboss eap 7.0

    anuj kumar Newbie

      Hi Team,

       

      I want to rewrite url "/my-app/scripts/*"  to "/scripts/* in undertow subsystem in jboss eap 7. Where can i put <rewrite> tag in undertow subsystem  and how can i change url from "/my-app/scripts/*"  to "/scripts/*. Basically i want to remove context when my application searches for scripts.

       

      Thanks in advance

      Anuj

        • 1. Re: how to use rewrite url in jboss eap 7.0
          Greg Jewell Expert

          You can configure a rewrite filter within the undertow subsystem, or you can add a undertow-handlers.conf file to the WEB-INF directory of your webapp.

           

          For the direct subsystem configuration, the "host" element can contain "filter-ref" children.  I don't know if you can pass the capture groups to the referenced filter.  For example:

          <host name="default-host" alias="localhost">

              <filter-ref name="rewriteFilter" predicate="regex('/my-app/scripts/(.*)')" />

          </host>

          <filters>

              <rewrite name="rewriteFilter" target="/scripts/${1}" />       <--- I don't know how to pass the capture group into here.  There is a good chance this wouldn't work.

          </filters<

           

          If you put it in the undertow-handlers.conf file, I believe you would want something like the following:

          regex('/my-app/scripts/(.*)') -> rewrite('/scripts/${1}')

          • 2. Re: how to use rewrite url in jboss eap 7.0
            anuj kumar Newbie

            Hi jewellgm

             

            Now, i have undertow-handlers.conf under web-inf directory and i have below line inside file

             

            regex('/aa-web-corp/scripts/(.*)') -> rewrite('/scripts/${1}')

            But this seems not to be working. Any idea. I also tried by direct subsystem configuration

             

            Also what is ${1} ?

            • 3. Re: how to use rewrite url in jboss eap 7.0
              loganheights Newbie

              I think jewellgm was close. I have been trying to do the same thing as anuj_kumar, stripping the context, but I don't want to use the undertow-handler.conf. Here's how mine ended up:

              <server>

              .

              .

              .

              <host name="default-host" alias="localhost">

              <filter-ref name="removeMe" predicate="regex('/removeMe(.*)')" />

              </host>

              </server>

               

              <filters>

              <expression-filter name="removeMe" expression="path-prefix('/removeMe') -> redirect('$${remaining}')" />

              </filters>

               

              The $$ are needed per the following link and it now works. When I enter http://someURL/removeMe/blah/yada, I'm redirected to http://someURL/blah/yada.

              How to use a ${} value in an undertow expression filter with CLI - Red Hat Customer Portal

               

              anuj_kumar - the ${1} is the contextual value from the regex command (.*). In your case, it's whatever comes after "scripts/".

              • 4. Re: how to use rewrite url in jboss eap 7.0
                anuj kumar Newbie

                Hi loganheights

                 

                I am using jboss eap 7.0 . I am getting error WFLYCTL0211: Cannot resolve expression 'path-prefix'. whats your thoughts on this.

                 

                Thanks

                Anuj

                • 5. Re: how to use rewrite url in jboss eap 7.0
                  loganheights Newbie

                  anuj_kumar,

                   

                  Can you post the undertow subsystem from your standalone xml config file?

                   

                  I'm using EAP 7.2 but I'm pretty sure it should work the same since EAP 7.0.

                  • 6. Re: how to use rewrite url in jboss eap 7.0
                    anuj kumar Newbie

                    Hi loganheights

                     

                    PFB the undertow confurations

                     

                      <subsystem xmlns="urn:jboss:domain:undertow:3.1" instance-id="jboss1">

                                <buffer-cache name="default"/>

                                <server name="default-server">

                                    <ajp-listener name="ajp" socket-binding="ajp"/>

                                    <http-listener name="default" socket-binding="http" redirect-socket="https"/>

                                    <host name="default-host" alias="localhost">

                                        <location name="/" handler="securityimages"/>

                                        <location name="/aa-web-corp/styles/" handler="styles"/>

                                        <location name="/aa-web-corp/scripts/" handler="scripts"/>

                                        <location name="/scripts/" handler="scripts"/>

                                        <location name="/aa-web-corp/images/" handler="images"/>

                                       <filter-ref name="removeMe" predicate="regex('/aa-web-corp/scripts/(.*)')"/>

                                        <filter-ref name="server-header"/>

                                        <filter-ref name="x-powered-by-header"/>

                                    </host>

                                </server>

                                <servlet-container name="default">

                                    <jsp-config/>

                                    <websockets/>

                                </servlet-container>

                                <handlers>

                                    <file name="securityimages" path="${jboss.home.dir}/securityimages"/>

                                    <file name="styles" path="${jboss.home.dir}/aa-web-corp/styles"/>

                                    <file name="scripts" path="${jboss.home.dir}/aa-web-corp/scripts"/>

                                    <file name="images" path="${jboss.home.dir}/aa-web-corp/images"/>

                                </handlers>

                                <filters>

                        <expression-filter name="removeMe" expression="path-prefix('/aa-web-corp') -> redirect('$${/scripts/${1}')" />

                                    <response-header name="server-header" header-name="Server" header-value="JBoss-EAP/7"/>

                                    <response-header name="x-powered-by-header" header-name="X-Powered-By" header-value="Undertow/1"/>

                                </filters>

                            </subsystem>

                    • 7. Re: how to use rewrite url in jboss eap 7.0
                      anuj kumar Newbie

                      Just to reiterate, I want to rewrite url "/aa-web-corp/scripts/*"  to "/scripts/*     But below error i am getting

                       

                      18:19:07,747 ERROR [org.jboss.as.controller.management-operation] (ServerService Thread Pool -- 61) WFLYCTL0013: Operation ("add") failed - address: ([

                          ("subsystem" => "undertow"),

                          ("configuration" => "filter"),

                          ("expression-filter" => "removeMe")

                      ]) - failure description: "WFLYCTL0211: Cannot resolve expression 'path-prefix('/aa-web-corp') -> redirect('$${/scripts/${1}')'"

                      18:19:07,747 INFO  [org.jboss.modcluster] (ServerService Thread Pool -- 64) MODCLUSTER000001: Initializing mod_cluster version 1.3.2.Final-redhat-1

                      • 8. Re: how to use rewrite url in jboss eap 7.0
                        loganheights Newbie

                        Ok I think I see the problem...need to change this

                            <expression-filter name="removeMe" expression="path-prefix('/aa-web-corp') -> redirect('$${/scripts/${1}')" />

                        to this

                            <expression-filter name="removeMe" expression="path-prefix('/aa-web-corp') -> redirect('$${remaining}')" />

                         

                        "remaining" is a keyword that Undertow (?) recognizes and handles.

                         

                        If this solves the issue, please mark it was the accepted answer. Thanks!