Migration JAXWS application from Java 8 to Java 11

Note sure about sprint boot, but to get JAXWS working in Java 11, I used

<profiles>
    <!-- add back the jaxws SOAP dependendies which were removed in JDK11 -->
    <profile>
        <id>jdk11</id>
        <activation>
            <jdk>[11,)</jdk>
        </activation>
        <!-- tested working with OpenJDK 11.0.8 -->
        <dependencies>
            <dependency>
                <groupId>com.sun.xml.ws</groupId>
                <artifactId>jaxws-rt</artifactId>
                <version>2.3.3</version>
                <type>pom</type>
            </dependency>
            <dependency>
                <groupId>com.sun.xml.ws</groupId>
                <artifactId>rt</artifactId>
                <version>2.3.3</version>
            </dependency>
        </dependencies>
    </profile>
</profiles>

The documentation regarding this removal (JEP 320) has a topic called Risks and Assumptions followed by Java EE modules in which they suggest alternatives for the removals, like jaxws-ri and jaxb-ri.

In my case I was using the javax.jws package in Java 8 and it got removed in Java 11. So as the JEP suggests, I just had to add the following dependency to get it working again on Java 11:

<dependency>
    <groupId>com.sun.xml.ws</groupId>
    <artifactId>jaxws-ri</artifactId>
    <version>2.3.2</version>
    <type>pom</type>
</dependency>

In your case you may need other dependencies as well, just take a look at the JEP suggestions.