I got this working correctly. I don't know what the root cause in the EMR is, but it was treating each loaded route of the SPA as part of the same instance using #! routes. Getting HTML5 routing working solved the issue.
After fighting with Undertow's undertow-handlers.conf for a day and having no feedback on why my rules weren't working, I ended up using Tuckey's URL Rewrite. It helpfully logs what input it was comparing against what which allowed me to see where my first attempts at rules went wrong, and edit them accordingly until they worked.
This required three file changes in the WEB-INF directory inside the CentricityPracticeWS.war directory. (There are various META-INF and WEB-INF directories all over but using this one worked in the specific deployment I'm working in now, namely our demo server.)
1) Create a /lib directory inside WEB-INF and put urlrewritefilter-4.0.4.jar in it (downloaded from the Maven Repository)
2) Put the example urlrewrite.xml into WEB-INF and adapt it with necessary rules. For the root page of our SPA and the first route, the custom rules I inserted look something like this:
<rule match-type="regex" enabled="true">
<condition type="request-filename" operator="notfile" />
<condition type="request-uri" operator="notequal">(\.html|\.js|\.css)</condition>
<from>^/FormsFolder/subfolder/app/$</from>
<to last="true">/FormsFolder/subfolder/app/index.html</to>
</rule>
<rule match-type="regex" enabled="true">
<condition type="request-filename" operator="notfile" />
<condition type="request-uri" operator="notequal">(\.html|\.js|\.css)</condition>
<from>^/FormsFolder/subfolder/app/route1/$</from>
<to last="true">/FormsFolder/subfolder/app/index.html</to>
</rule>
3) Add the Tuckey Rewrite Filter to web.xml:
<filter>
<filter-name>UrlRewriteFilter</filter-name>
<filter-class>org.tuckey.web.filters.urlrewrite.UrlRewriteFilter</filter-class>
<init-param>
<param-name>confPath</param-name>
<param-value>/WEB-INF/urlrewrite.xml</param-value>
</init-param>
<init-param>
<param-name>confReloadCheckInterval</param-name>
<param-value>60</param-value>
</init-param>
<init-param>
<param-name>logLevel</param-name>
<param-value>TRACE</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>UrlRewriteFilter</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
</filter-mapping>
Lastly I had to update the index.html of the SPA to include the base tag, before all the stylesheet links and javascript script includes so that they route correctly. For the demo server, mine looks something like <base href="/demo/ws/FormsFolder/subfolder/app/"> but will have to be updated to publish to the live server.
Hopefully this is helpful if anyone else is trying to configure HTML5 routing on a centricity JBoss server.
Posted : May 3, 2021 9:00 am
