我跟踪了这个URL，下面的设置真的帮助了我。我在Macbook Pro中使用带有STS IDE的Java 10。这招很管用。

   <dependency>
    <groupId>javax.xml.bind</groupId>
    <artifactId>jaxb-api</artifactId>
    <version>2.3.0</version>
</dependency>
<dependency>
    <groupId>org.glassfish.jaxb</groupId>
    <artifactId>jaxb-runtime</artifactId>
    <version>2.3.0</version>
    <scope>runtime</scope>
</dependency>
<dependency>
    <groupId>javax.activation</groupId>
    <artifactId>javax.activation-api</artifactId>
    <version>1.2.0</version>
</dependency>

为了解决这个问题，我在我的项目中导入了一些JAR文件:

javax.activation-1.2.0.jar

http://search.maven.org/remotecontent?filepath=com/sun/activation/javax.activation/1.2.0/javax.activation-1.2.0.jar

jaxb-api-2.3.0.jar

http://search.maven.org/remotecontent?filepath=javax/xml/bind/jaxb-api/2.3.0/jaxb-api-2.3.0.jar

jaxb-core-2.3.0.jar

http://search.maven.org/remotecontent?filepath=com/sun/xml/bind/jaxb-core/2.3.0/jaxb-core-2.3.0.jar

jaxb-impl-2.3.0.jar

http://search.maven.org/remotecontent?filepath=com/sun/xml/bind/jaxb-impl/2.3.0/jaxb-impl-2.3.0.jar

下载以上文件并复制到项目的libs文件夹中 在Java Build Path中添加导入的JAR文件

2019年4月更新

JAXB版本的Changelong在https://javaee.github.io/jaxb-v2/doc/user-guide/ch02.html

摘录:

    4.1. Changes between 2.3.0.1 and 2.4.0

         JAXB RI is now JPMS modularized:

            All modules have native module descriptor.

            Removed jaxb-core module, which caused split package issue on JPMS.

            RI binary bundle now has single jar per dependency instead of shaded fat jars.

            Removed runtime class weaving optimization.

    4.2. Changes between 2.3.0 and 2.3.0.1

          Removed legacy technology dependencies:

            com.sun.xml.bind:jaxb1-impl

            net.java.dev.msv:msv-core

            net.java.dev.msv:xsdlib

            com.sun.xml.bind.jaxb:isorelax

    4.3. Changes between 2.2.11 and 2.3.0

          Adopt Java SE 9:

            JAXB api can now be loaded as a module.

            JAXB RI is able to run on Java SE 9 from the classpath.

            Addes support for java.util.ServiceLoader mechanism.

            Security fixes

权威链接在https://github.com/eclipse-ee4j/jaxb-ri#maven-artifacts

Maven coordinates for JAXB artifacts jakarta.xml.bind:jakarta.xml.bind-api: API classes for JAXB. Required to compile against JAXB. org.glassfish.jaxb:jaxb-runtime: Implementation of JAXB, runtime used for serialization and deserialization java objects to/from xml. JAXB fat-jar bundles: com.sun.xml.bind:jaxb-impl: JAXB runtime fat jar. In contrast to org.glassfish.jaxb artifacts, these jars have all dependency classes included inside. These artifacts does not contain JPMS module descriptors. In Maven projects org.glassfish.jaxb artifacts are supposed to be used instead.

jaxb:jaxb-runtime:jar:2.3.2

[INFO] +- org.glassfish.jaxb:jaxb-runtime:jar:2.3.2:compile
[INFO] |  +- jakarta.xml.bind:jakarta.xml.bind-api:jar:2.3.2:compile
[INFO] |  +- org.glassfish.jaxb:txw2:jar:2.3.2:compile
[INFO] |  +- com.sun.istack:istack-commons-runtime:jar:3.0.8:compile
[INFO] |  +- org.jvnet.staxex:stax-ex:jar:1.8.1:compile
[INFO] |  +- com.sun.xml.fastinfoset:FastInfoset:jar:1.2.16:compile
[INFO] |  \- jakarta.activation:jakarta.activation-api:jar:1.2.1:compile

原来的答案

我应该在Maven项目中为JAXB RI使用哪些构件?在Maven中，你可以使用这样的配置文件:

<profile>
    <id>java-9</id>
    <activation>
        <jdk>9</jdk>
    </activation>
    <dependencies>
        <dependency>
            <groupId>org.glassfish.jaxb</groupId>
            <artifactId>jaxb-runtime</artifactId>
            <version>2.3.0</version>
        </dependency>
        <dependency>
            <groupId>javax.activation</groupId>
            <artifactId>activation</artifactId>
            <version>1.1.1</version>
        </dependency>
    </dependencies>
</profile> 

依赖树显示:

[INFO] +- org.glassfish.jaxb:jaxb-runtime:jar:2.3.0:compile
[INFO] |  +- org.glassfish.jaxb:jaxb-core:jar:2.3.0:compile
[INFO] |  |  +- javax.xml.bind:jaxb-api:jar:2.3.0:compile
[INFO] |  |  +- org.glassfish.jaxb:txw2:jar:2.3.0:compile
[INFO] |  |  \- com.sun.istack:istack-commons-runtime:jar:3.0.5:compile
[INFO] |  +- org.jvnet.staxex:stax-ex:jar:1.7.8:compile
[INFO] |  \- com.sun.xml.fastinfoset:FastInfoset:jar:1.2.13:compile
[INFO] \- javax.activation:activation:jar:1.1.1:compile

要在Eclipse中使用它，请输入Oxygen.3a Release (4.7.3a)或更高版本，按Ctrl-Alt-P，或右键单击项目Maven，然后选择概要文件。

转到您的构建。gradle和添加以下Java 9或Java 10的依赖项。

sourceCompatibility = 10 // You can also decrease your souce compatibility to 1.8 

//java 9+ does not have Jax B Dependents

    compile group: 'javax.xml.bind', name: 'jaxb-api', version: '2.3.0'
    compile group: 'com.sun.xml.bind', name: 'jaxb-core', version: '2.3.0'
    compile group: 'com.sun.xml.bind', name: 'jaxb-impl', version: '2.3.0'
    compile group: 'javax.activation', name: 'activation', version: '1.1.1'

这对我有用，我有一个spring boot项目，在Java 8中编译，但我不知道为什么有一天我的maven开始用Java 11编译，在Ubuntu中我用来修复它:

sudo update-java-alternatives  -l

这显示了我的pc上可用的JDK:

java-1.11.0-openjdk-amd64      1111       /usr/lib/jvm/java-1.11.0-openjdk-amd64
java-1.8.0-openjdk-amd64       1081       /usr/lib/jvm/java-1.8.0-openjdk-amd64`

所以我最后运行这个命令来选择一个想要的:

sudo update-java-alternatives  -s java-1.8.0-openjdk-amd64 

以上就是全部内容，要了解更多内容，请参阅如何使用更新替代命令

这解决了我在Java 12上运行Apache Camel 2.24.1的依赖关系的问题:

    <dependency>
        <groupId>javax.activation</groupId>
        <artifactId>activation</artifactId>
        <version>1.1.1</version>
    </dependency>

    <dependency>
        <groupId>javax.xml.bind</groupId>
        <artifactId>jaxb-api</artifactId>
        <version>2.3.1</version>
    </dependency>

    <dependency>
        <groupId>com.sun.xml.bind</groupId>
        <artifactId>jaxb-core</artifactId>
        <version>2.3.0.1</version>
    </dependency>

    <dependency>
        <groupId>com.sun.xml.bind</groupId>
        <artifactId>jaxb-impl</artifactId>
        <version>2.3.0.1</version>
    </dependency>