java – 这里不允许使用Maven Jetty插件守护进程元素

我正在尝试配置项目的pom.xml文件.我希望它在测试阶段启动Jetty服务器.为了做到这一点,我应该在Jetty插件中添加“守护进程”元素,就像我在下面所做的那样,但是IntelliJ警告我“这里不允许元素守护进程”.你能帮我么？是什么原因？

<build>
    <plugins>
        <plugin>
            <groupId>org.eclipse.jetty</groupId>
            <artifactId>jetty-maven-plugin</artifactId>
            <version>9.2.11.v20150529</version>
            <configuration>
                <httpConnector>
                    <port>8083</port>
                </httpConnector>
            </configuration>
            <executions>
                <execution>
                    <id>start-jetty</id>
                    <phase>pre-integration-test</phase>
                    <goals>
                        <goal>run</goal>
                    </goals>
                    <configuration>
                        <scanIntervalSeconds>0</scanIntervalSeconds>
                        <daemon>true</daemon>
                    </configuration>
                </execution>
                <execution>
                    <id>stop-jetty</id>
                    <phase>post-integration-test</phase>
                    <goals>
                        <goal>stop</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>