XJC Maven 插件(jaxb2-maven-plugin) Java 11 迁移问题

Question

我目前正在从事 java 11 迁移项目，其中 jaxb2-maven-plugin 已用于 XJC 任务。由于 JDK 11 版本中不存在 XJC 可执行文件，因此出现以下错误。

    [ERROR] Failed to execute goal org.codehaus.mojo:jaxb2-maven-plugin:2.2:xjc (xjc-schema1) on project paymaster-service: Execution xjc-schema1 of goal org.codehaus.mojo:jaxb2-maven-plugin:2.2
:xjc failed: A required class was missing while executing org.codehaus.mojo:jaxb2-maven-plugin:2.2:xjc: com/sun/codemodel/CodeWriter
[ERROR] -----------------------------------------------------
[ERROR] realm =    plugin>org.codehaus.mojo:jaxb2-maven-plugin:2.2
[ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
[ERROR] urls[0] = file:/C:/Users/voletis/.m2/repository/org/codehaus/mojo/jaxb2-maven-plugin/2.2/jaxb2-maven-plugin-2.2.jar
[ERROR] urls[1] = file:/C:/Users/voletis/.m2/repository/javax/xml/bind/jaxb-api/2.2.11/jaxb-api-2.2.11.jar
[ERROR] urls[2] = file:/C:/Users/voletis/.m2/repository/org/glassfish/jaxb/jaxb-core/2.2.11/jaxb-core-2.2.11.jar
[ERROR] urls[3] = file:/C:/Users/voletis/.m2/repository/org/glassfish/jaxb/jaxb-runtime/2.2.11/jaxb-runtime-2.2.11.jar
[ERROR] urls[4] = file:/C:/Users/voletis/.m2/repository/org/glassfish/jaxb/jaxb-xjc/2.2.11/jaxb-xjc-2.2.11.jar
[ERROR] urls[5] = file:/C:/Users/voletis/.m2/repository/org/glassfish/jaxb/jaxb-jxc/2.2.11/jaxb-jxc-2.2.11.jar
[ERROR] urls[6] = file:/C:/Users/voletis/.m2/repository/com/thoughtworks/qdox/qdox/2.0-M3/qdox-2.0-M3.jar
[ERROR] urls[7] = file:/C:/Users/voletis/.m2/repository/org/sonatype/sisu/sisu-inject-bean/1.4.2/sisu-inject-bean-1.4.2.jar
[ERROR] urls[8] = file:/C:/Users/voletis/.m2/repository/org/sonatype/sisu/sisu-guice/2.1.7/sisu-guice-2.1.7-noaop.jar
[ERROR] urls[9] = file:/C:/Users/voletis/.m2/repository/org/sonatype/aether/aether-util/1.7/aether-util-1.7.jar
[ERROR] urls[10] = file:/C:/Users/voletis/.m2/repository/org/codehaus/plexus/plexus-interpolation/1.14/plexus-interpolation-1.14.jar
[ERROR] urls[11] = file:/C:/Users/voletis/.m2/repository/org/codehaus/plexus/plexus-component-annotations/1.5.5/plexus-component-annotations-1.5.5.jar
[ERROR] urls[12] = file:/C:/Users/voletis/.m2/repository/org/sonatype/plexus/plexus-sec-dispatcher/1.3/plexus-sec-dispatcher-1.3.jar
[ERROR] urls[13] = file:/C:/Users/voletis/.m2/repository/org/sonatype/plexus/plexus-cipher/1.4/plexus-cipher-1.4.jar
[ERROR] urls[14] = file:/C:/Users/voletis/.m2/repository/org/codehaus/plexus/plexus-compiler-api/2.5/plexus-compiler-api-2.5.jar
[ERROR] urls[15] = file:/C:/Users/voletis/.m2/repository/org/codehaus/plexus/plexus-utils/3.0.22/plexus-utils-3.0.22.jar
[ERROR] urls[16] = file:/C:/Users/voletis/.m2/repository/org/sonatype/plexus/plexus-build-api/0.0.7/plexus-build-api-0.0.7.jar
[ERROR] Number of foreign imports: 1
[ERROR] import: Entry[import  from realm ClassRealm[maven.api, parent: null]]
[ERROR]
[ERROR] -----------------------------------------------------
[ERROR] : com.sun.codemodel.CodeWriter
[ERROR] -> [Help 1]
[ERROR]

下面是我的 pom.xml

<plugin>
   <groupId>org.codehaus.mojo</groupId>
   <artifactId>jaxb2-maven-plugin</artifactId>
   <version>2.2</version>
   <executions>
      <execution>
         <id>xjc-schema1</id>
         <goals>
            <goal>xjc</goal>
         </goals>
         <configuration>
            <target>2.2</target>
            <schemaFiles>SubmitPaymentBatch/SubmitPaymentRequest.xsd</schemaFiles>
            <packageName>app.test.services.submitpayment.request</packageName>
            <clearOutputDir>false</clearOutputDir>
         </configuration>
      </execution>
</plugin>

根据 java 11 的要求，我添加了必要的依赖项，如 JAXB、JAXB-IMPL 等。但仍然无法解决问题。您对此有什么建议的解决方法吗？提前致谢。

Answer 1

jaxb2-maven-plugin2.5.0 现在与 Java 11 兼容：

• https://github.com/mojohaus/jaxb2-maven-plugin/issues/43
• https://github.com/mojohaus/jaxb2-maven-plugin/releases/tag/jaxb2-maven-plugin-2.5.0

Answer 2

我已通过以下参考链接解决了此问题。

https://github.com/davidmoten/jax-maven-plugin

根据上面的教程参考，我已经修改了我的插件如下，我能够解决这个问题。

<plugin>
   <groupId>com.github.davidmoten</groupId>
   <artifactId>jax-maven-plugin</artifactId>
   <version>VERSION_HERE</version>

   <executions>
      <execution>
         <id>xjc-schema1</id>
         <goals>
            <goal>xjc</goal>
         </goals>
         <configuration>
            <target>2.2</target>
            <schemaFiles>SubmitPaymentBatch/SubmitPaymentRequest.xsd</schemaFiles>
            <packageName>app.test.services.submitpayment.request</packageName>
            <clearOutputDir>false</clearOutputDir>
         </configuration>
      </execution>
   </executions>
</plugin>

Answer 3

我在让 jaxb 与 maven 和 Java 11 一起工作时也遇到了问题。我的解决方案如下：

<plugin>
  <groupId>org.codehaus.mojo</groupId>
  <artifactId>jaxb2-maven-plugin</artifactId>
  <version>2.5.0</version>
  <executions>
    <execution>
      <id>xjc</id>
      <phase>generate-sources</phase>
      <goals>
        <goal>xjc</goal>
      </goals>
    </execution>
  </executions>
  <configuration>
    <packageName>de.powerstat.my.generated</packageName>
  </configuration>
  <dependencies>
    <dependency>
      <groupId>com.sun.activation</groupId>
      <artifactId>javax.activation</artifactId>
      <version>1.2.0</version>
    </dependency>

    <dependency>
      <groupId>org.glassfish.jaxb</groupId>
      <artifactId>jaxb-runtime</artifactId>
      <version>2.3.3</version>
    </dependency>

    <dependency>
      <groupId>org.glassfish.jaxb</groupId>
      <artifactId>jaxb-core</artifactId>
      <version>2.3.0.1</version>
    </dependency>

    <dependency>
      <groupId>org.glassfish.jaxb</groupId>
      <artifactId>jaxb-xjc</artifactId>
      <version>2.3.3</version>
    </dependency>

  </dependencies>
</plugin>

希望这对其他人有所帮助。

Answer 4

我刚刚找到了一个解决在 Java 11 中使用 jaxb2-maven-plugin 的问题的解决方法。它包括在 pom.xml 中添加额外的依赖项，并在正确的 XSD 文件旁边向项目添加一个额外的虚拟 XSD 文件.我已经把它完全放在我的博客文章中了： https://artofcode.wordpress.com/2019/02/26/jaxb2-maven-plugin-2-4-and-java-11/

Answer 5

我能够通过添加此处列出的所有依赖项来解决 JDK11 的问题：https://github.com/apache/cxf/blob/master/distribution/src/main/release/samples/pom.xml#L251-L290 apache.cxf 项目在从 JDK9 开始的示例项目中使用它