Question

I did migrate my Maven based project to SpringBoot 2.0 and Java 9. In the process, I had to add some dependencies to get rid of Java 9 warnings regarding modules (that still can be added with --add-modules).

However I am unable to get rid off --add-modules java.xml.ws. As suggested in JEP 320, adding dependencies:

<dependency>
    <groupId>javax.xml.bind</groupId>
    <artifactId>jaxb-api</artifactId>
    <version>2.3.0</version>
</dependency>
<dependency>
    <groupId>com.sun.xml.bind</groupId>
    <artifactId>jaxb-impl</artifactId>
    <version>2.3.0</version>
</dependency>
<dependency>
    <groupId>com.sun.xml.bind</groupId>
    <artifactId>jaxb-core</artifactId>
    <version>2.3.0</version>
</dependency>

These dependencies allow to run mvn test to run through. The build from IntelliJ IDE also works.

However when starting the Spring Boot application, I get the following runtime exception:

...
Caused by: java.lang.ClassNotFoundException: com.sun.xml.internal.bind.v2.ContextFactory
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
    at javax.xml.bind.ServiceLoaderUtil.nullSafeLoadClass(ServiceLoaderUtil.java:122)
    at javax.xml.bind.ServiceLoaderUtil.safeLoadClass(ServiceLoaderUtil.java:155)
    at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:174)
    ... 64 more

What Maven dependencies am I missing? JarFinder tells me that the implementation class is part of jaxb-impl, but only up to version 2.2.12. So where did this implementation disappear to?

Answer 1

您还需要jaxb-runtime：

    <dependency>                                                            
        <groupId>org.glassfish.jaxb</groupId>                               
        <artifactId>jaxb-runtime</artifactId>                               
        <version>2.3.0</version>                                            
    </dependency>

我认为您不需要任何com.sun依赖项，请使用glassfish来实现：

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

作为旁注，我认为至少有一个集成测试（maven failsafe one）可以启动spring上下文。如果你有一个确保你至少使用surefire和failsafe 2.21.0（之前的版本有--add-modules的错误。）

How to replace --add-modules java.xml.ws

1 个答案: