Tomcat 9 add webapi at runtime

Question

I don't know if it's possibile . When I create a webapi I must declare in web.xml the related class/url

  <servlet-mapping>
        <servlet-name>myServlet</servlet-name>
        <url-pattern>/myServlet.htm</url-pattern>
        <!-- WebApi -->
        <url-pattern>/Timbrature2/*</url-pattern>
        <url-pattern>/Timbrature2.json/*</url-pattern>
        <url-pattern>/Timbrature2.xml/*</url-pattern>
        <url-pattern>/Timbrature/*</url-pattern>
        <url-pattern>/Timbrature.json/*</url-pattern>
        <url-pattern>/Timbrature.xml/*</url-pattern>
        <url-pattern>/TimbratureMobile/*</url-pattern>
        <url-pattern>/TimbratureMobile.json/*</url-pattern>
        <url-pattern>/TimbratureMobile.xml/*</url-pattern>
        <url-pattern>/$metadata</url-pattern>
    </servlet-mapping>

but if my webapp load from jars dynamic code can I add a "new" class to be used as a REST endpoint?

Read Apache documentation, tryied various configurations but nothing

It's not entirely clear what you are trying to do. Are you asking if it's possible to add another API call (e.g. with a different URL pattern) without modifying `web,.xml`? — Christopher Schultz, Mar 30 '23 at 17:27
Yes exactly... i've understood that a webapi url pattern must be registered in web.xml.. can i add another url at rendimento? — Denis De Pauli, Mar 31 '23 at 18:09

score 0 · Accepted Answer · answered Apr 03 '23 at 17:19

If you want one servlet to handle everything, you can register it to broad URL patterns like

<url-pattern>/api/*</url-pattern>

It's worth reading the Servlet Specification and specifically section 12.2 (in the 4.0 release of the spec) which covers "Specification of Mappings". This describes the kinds of url-mappings which are possible.

Another option is to use @WebServlet annotations in your code (covered in section 8.1.1 of the above document) to establish a mapping from within your code. I have a preference for the declarative mapping found in web.xml because all mappings are co-located rather than spread out across arbitrary source files whose source may not always be available.

Tomcat 9 add webapi at runtime

1 Answers1