docs/src/main/docbook/migration.xml

<?xml version="1.0"?>
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<!DOCTYPE chapter [<!ENTITY % ents SYSTEM "jersey.ent" > %ents;]>
<chapter xmlns="http://docbook.org/ns/docbook"
         version="5.0"
         xml:lang="en"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns:xlink="http://www.w3.org/1999/xlink"
         xsi:schemaLocation="http://docbook.org/ns/docbook http://docbook.org/xml/5.0/xsd/docbook.xsd
                             http://www.w3.org/1999/xlink http://www.w3.org/1999/xlink.xsd"
         xml:id="migration">
    <title>Migration Guide</title>

    <section xml:id="mig-3.0.0">
        <title>Migrating from Jersey 2.32+ to 3.0.x.</title>
        <section xml:id="mig-3.0.0-breaking-changes">
            <title>Breaking Changes</title>
            <para>
                <itemizedlist>
                    <listitem>
                        <para>
                            The most fundamental change in Jersey &version; and later is namespace change.
                            Since Jakarta EE 9 the <literal>jakarta.</literal> namespace is introduced as a replacement
                            for javax namespace from Java EE.
                        </para>
                        <para>
                            Due to required jakartification several modules where omitted (because of not satisfied dependencies).
                            Or require higher JDK (11+).
                        </para>
                        <para>
                            Spring for now is not supported.
                        </para>
                        <para>
                            Helidon connector for now is not supported.
                        </para>
                        <para>
                            Examples and tests are reduced in quantity (so you probably will not find all those examples which were available
                            in the 2.32 version).
                        </para>
                    </listitem>
                </itemizedlist>
            </para>
        </section>
        <section xml:id="mig-3.0.0-removed-deprecated">
            <title>Removed deprecated APIs</title>
            <para>
                <itemizedlist>
                    <listitem>
                        <para>
                            Jackson 1 support was removed.
                        </para>
                    </listitem>
                </itemizedlist>
            </para>
        </section>
        <section xml:id="mig-3.0.0-application-servers">
            <title>Application servers for Jersey</title>
            <para>
                Note that only a few servers support Jakarta EE 9 compatible Servlet API and they are tested with Jersey.
                Those are:
                <literal>GlassFish 6</literal>,
                <literal>Grizzly 3</literal>,
                <literal>Jetty 11 (JDK 11+ required)</literal>,
                <literal>Payara 6</literal>, and
                <literal>Tomcat 10</literal>.
            </para>
        </section>
    </section>
    <section xml:id="mig-3.1.0">
        <title>Migrating from Jersey 3.0.x to &version;.</title>
        <section xml:id="mig-3.1.0-breaking-changes">
            <title>Breaking Changes</title>
            <para>
                <itemizedlist>
                    <listitem>
                        <para>
                            Jersey 3.1.0+ is the implementation of Jakarta RESTful WebServices 3.1, which is part of
                            Jakarta EE 10. Jakarta EE 10 defines the minimum JDK 11 requirement and hence Jersey no longer
                            supports JDK 8.
                        </para>
                    </listitem>
                    <listitem>
                        <para>
                            &jersey.server.ServerProperties.UNWRAP_COMPLETION_STAGE_IN_WRITER_ENABLE; is by default
                            <literal>true</literal>.
                        </para>
                    </listitem>
                </itemizedlist>
            </para>
        </section>
    </section>

</chapter>