JSP hot-deploy in Jboss / Wildfly

To enable hot-deploy of JSPs in Wildfly, i.e. to automatically publish any changes to JSPs in ${WILDFLY_ROOT}/standalone/tmp/vfs/temp/tempxxxxxxx/content-xxxxxxx without requiring redeployment of war, set the development attribute of jsp-config within undertow subsystem to true as below:

<subsystem xmlns=”urn:jboss:domain:undertow:3.0″>
<servlet-container name=”default” default-encoding=”UTF-8″>
        <jsp-config development=”true” tag-pooling=”false”/>        <websockets/>
</servlet-container>

Ref: https://ohioedge.com/2018/01/31/jsp-hot-deploy-in-wildfly/