JAXB maven 插件不生成类

我正在尝试从XSD生成java文件，但下面的代码没有生成。如果我取消注释 outputDirectory，它可以工作，但首先删除该文件夹。添加也不会生成任何内容。clearOutputDir = false

<build>
        <plugins>
            <!-- JAXB xjc plugin that invokes the xjc compiler to compile XML schema into Java classes.-->
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>jaxb2-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <goals>
                            <goal>xjc</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <!-- The package in which the source files will be generated. -->
                    <packageName>uk.co.infogen.camel.message</packageName>
                    <!-- The schema directory or xsd files. -->
                    <sources>
                        <source>${basedir}/src/main/resources/xsd</source>
                    </sources>
                    <!-- The working directory to create the generated java source files. -->
                    <!--<outputDirectory>${basedir}/src/main/java</outputDirectory>
                    <clearOutputDir>false</clearOutputDir>-->
                </configuration>
            </plugin>
        </plugins>
    </build>

我收到以下消息：

[INFO] --- jaxb2-maven-plugin:2.2:xjc (default) @ service-business ---
[INFO] Ignored given or default xjbSources [/Users/aaa/development/workspace/infogen/infogen_example/service-business/src/main/xjb], since it is not an existent file or directory.
[INFO] No changes detected in schema or binding files - skipping JAXB generation.