Jaxb2 maven插件：源代码与SchemaDirectory

Question

我正在制作一个maven项目，它将使用Jaxb2 maven插件从xsd文件生成java文件。我的项目结构如下：

project.basedir
--src/main/resources/schemas
----common
----request
----response

下面是pom的插件配置。xml

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>jaxb2-maven-plugin</artifactId>
    <version>1.6</version>

    <executions>
        <execution>
            <id>xjc-PDF</id>
            <phase>generate-sources</phase>
            <goals>
                <goal>xjc</goal>
            </goals>
            <configuration>
                <extension>true</extension>
                <clearOutputDir>false</clearOutputDir>
                <outputDirectory>${project.build.directory}/generated-sources/jaxb</outputDirectory>
                <explicitAnnotation>true</explicitAnnotation>
                <!-- <schemaDirectory>${project.basedir}/src/main/resources/schemas</schemaDirectory> -->
                <sources>
                    <source>${project.basedir}/src/main/resources/schemas/common</source>
                    <source>${project.basedir}/src/main/resources/schemas/response</source>
                    <source>${project.basedir}/src/main/resources/schemas/request</source>
                </sources>
                <bindingDirectory>${project.basedir}/src/main/resources/schemas</bindingDirectory>
                <!-- <bindingDirectory>${project.basedir}/src/main/resources/bindings</bindingDirectory> -->
                <bindingFiles>jaxb-bth.xjb</bindingFiles>
            </configuration>
        </execution>
    </executions>
</plugin>

如果我这样编译，那么我会得到以下错误（即使源目录包含有效的模式文件）：

C:\ESB_SOAP5_Space\pdf-util>mvn clean install
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building pdf-util 1.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ pdf-util ---
[INFO] Deleting C:\ESB_SOAP5_Space\pdf-util\target
[INFO]
[INFO] --- build-helper-maven-plugin:1.6:add-source (add-source) @ pdf-util ---
[INFO] Source directory: C:\ESB_SOAP5_Space\pdf-util\target\generated-sources\jaxb added.
[INFO]
[INFO] --- jaxb2-maven-plugin:1.6:xjc (xjc-PDF) @ pdf-util ---
[INFO] Generating source...
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.205 s
[INFO] Finished at: 2018-03-19T06:27:02+11:00
[INFO] Final Memory: 8M/245M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:jaxb2-maven-plugin:1.6:xjc (xjc-PDF) on project pdf-util: No schemas have been found -> [Help 1]

然而，如果我像下面这样注释源代码并取消注释和修改，那么我就能够在公共模式下从模式中生成java类。

<schemaDirectory>${project.basedir}/src/main/resources/schemas/common</schemaDirectory> 

有人能告诉我为什么会这样吗？如果我必须解析一个根文件夹（有多个子文件夹）下的所有架构文件，我该怎么办？

谢谢

Answer 1

该插件的1.6版不支持“源”标签。您可以在2.4或更高版本上使用“源”标记。

如果有多个包含XSD的目录，请在配置中使用多个执行，每个schemaDirectory都指向其中一个目录。