web.xml missing in maven project code example

Example 1: web.xml is missing and is set to true

<properties>
    <failOnMissingWebXml>false</failOnMissingWebXml>
</properties>

Example 2: fail on missing web xml plugin to add in spring-boot-maven-plugin

<plugin>    <artifactId>maven-war-plugin</artifactId>    <version>2.4</version>    <configuration>        <failOnMissingWebXml>false</failOnMissingWebXml>        </configuration></plugin>