Plugins Maven Javadoc-无法生成Javadoc

我在pom文件中具有以下依赖项和内部版本。我可以使用Maven命令手动创建javadoc。我还可以成功地执行构建。输出根本没有提到javadoc。我还尝试省略输出目录路径。POM文件 依赖项部分：

<dependency>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-javadoc-plugin</artifactId>
    <version>2.8</version>
</dependency>

org.apache.maven.plugins
maven javadoc插件
2.8

然后是构建部分：

<build>
    <finalName>D</finalName>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-javadoc-plugin</artifactId>
            <version>2.8</version>
            <configuration> 
                <outputDirectory>${project.build.directory}/javadoc</outputDirectory>
                <reportOutputDirectory>${project.reporting.outputDirectory}/javadoc</reportOutputDirectory>
                <version>2.8</version>
            </configuration>
            <executions>
                <execution>
                    <id>attach-javadocs</id>
                    <goals>
                        <goal>aggregate</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

D
org.apache.maven.plugins
maven javadoc插件
2.8
${project.build.directory}/javadoc
${project.reporting.outputDirectory}/javadoc
2.8
附加javadocs
总数的

默认情况下，Maven Javadoc插件不会运行，需要绑定到默认的Maven生命周期阶段之一

下面是我将如何编写插件的配置：

    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-javadoc-plugin</artifactId>
        <version>2.8</version>
        <configuration> 
            <outputDirectory>${project.build.directory}/javadoc</outputDirectory>
            <reportOutputDirectory>${project.reporting.outputDirectory}/javadoc</reportOutputDirectory>
        </configuration>
        <executions>
            <execution>
                <id>attach-javadocs</id>
                <phase>site</phase>
                <goals>
                    <goal>aggregate</goal>
                </goals>
            </execution>
        </executions>
    </plugin>

org.apache.maven.plugins
如果您想要一个默认的Java构建阶段

还要注意的是，我放弃了
version
参数；默认情况下，它应该使用您的POM版本