Question

我正在尝试将maven-jaxb2-plugin配置为仅在XSD更改时生成java。这似乎不起作用，因为java类总是被重新生成。这是插件配置：

<plugin>
            <groupId>org.jvnet.jaxb2.maven2</groupId>
            <artifactId>maven-jaxb2-plugin</artifactId>
            <version>0.8.3</version>
            <configuration>
                <generateDirectory>${basedir}/src/main/java/</generateDirectory>
                <strict>true</strict>
                <verbose>true</verbose>
                <readOnly>true</readOnly>
                <episode>true</episode>
                <forceRegenerate>false</forceRegenerate>  
                <removeOldOutput>false</removeOldOutput>
            </configuration>
            <executions>
                <execution>
                    <id>commun-generate</id>
                    <goals>
                        <goal>generate</goal>
                    </goals>
                    <configuration>
                        <generatePackage>my.package.dest</generatePackage>
                        <schemaDirectory>${basedir}/src/main/resources/schemas/wsrest</schemaDirectory>
                        <bindingDirectory>${basedir}/src/main/resources/schemas/wsrest</bindingDirectory>
                        <bindingIncludes>
                            <include>bindings.xml</include>
                        </bindingIncludes>
                        <episodeFile>${basedir}/src/main/java/META-INF/sun-jaxb_commun.episode</episodeFile>
                    </configuration>
                </execution>

在构建（maven clean install或maven install）时，我可以观察到这个输出：

[INFO] File [D:\IDE\Data\Eclipse\workspace\MyProject\src\main\resources\schemas\wsrest\myXSD.xsd] was changed since the last build.
[INFO] File [D:\IDE\Data\Eclipse\workspace\MyProject\src\main\resources\schemas\wsrest\bindings.xml] was changed since the last build. 
[INFO] File [D:\IDE\Data\Eclipse\workspace\MyProject\pom.xml] was changed since the last build.

但自上次构建以来，我没有更改这些文件中的任何内容！

我做错了什么？

提前致谢

克莱门特

Answer 1

作为部分解决方法，您可以将<noFileHeader>true</noFileHeader>添加到配置中，以便生成的源对于未更改的XSD是相同的。解决我在存储库提交方面遇到的问题，如果这对你来说也很重要......

无法阻止XJC重新生成它只检查时间戳。

Answer 2

由于以下因素，无法停止重新生成：我遇到了同样的问题，我通过插件代码挖出了根本原因：

org.jvnet.jaxb2.maven2.RawXJC2Mojo.isUpToDate中的最新一次检查使用if (getBuildContext().hasDelta(dependsFile))代理org.sonatype.plexus.build.incremental.DefaultBuildContext.hasDelta，该代码被硬编码以返回true。这是因为在Maven c.f中打破了增量构建的概念。 Incremental Build

可以更改该逻辑以检查输出目录是否存在，如果是，则更改XSD。如果我找时间，我可能会提交错误。

Answer 3

文件是否实际重新生成？我有以下内容：

[INFO] File [C:\Projects\workspace-juno\maven-jaxb2-plugin-project\tests\po\src\main\resources\purchaseorder.xsd] was changed since the last build.
[INFO] File [C:\Projects\workspace-juno\maven-jaxb2-plugin-project\tests\po\pom.xml] was changed since the last build.
[INFO] Checking up-to-date depends [[C:\Projects\workspace-juno\maven-jaxb2-plugin-project\tests\po\src\main\resources\purchaseorder.xsd, C:\Projects\workspace-juno\maven-jaxb2-plugin-project\tests\po\pom.xml]].
[INFO] Checking up-to-date produces [[C:\Projects\workspace-juno\maven-jaxb2-plugin-project\tests\po\target\generated-sources\xjc\generated\Items.java, C:\Projects\workspace-juno\maven-jaxb2-plugin-project\tests\po\target\generated-sources\xjc\generated\ObjectFactory.java, C:\Projects\workspace-juno\maven-jaxb2-plugin-project\tests\po\target\generated-sources\xjc\generated\PurchaseOrderType.java, C:\Projects\workspace-juno\maven-jaxb2-plugin-project\tests\po\target\generated-sources\xjc\generated\USAddress.java, C:\Projects\workspace-juno\maven-jaxb2-plugin-project\tests\po\target\generated-sources\xjc\META-INF\sun-jaxb.episode]].
[INFO] Depends timestamp [1.395.259.386.093], produces timestamp [1.395.259.394.765].
[INFO] Skipped XJC execution. Generated sources were up-to-date.

似乎提供的org.sonatype.plexus.build.incremental.BuildContext表示文件已更改。但是当插件专门检查时间戳时，它会发现文件是最新的。我认为问题只出现在日志消息中，应该是may have been changed。

请提出问题here。

maven-jaxb2-plugin forceRegenerate = false不工作？

3 个答案: