如果你想使用jetty maven插件

If you want to use jetty maven plugin

   <plugin>
        <groupId>org.mortbay.jetty</groupId>
        <artifactId>maven-jetty-plugin</artifactId>
        <version>6.1.25</version>
        <configuration>
            <scanIntervalSeconds>10</scanIntervalSeconds>
            <requestLog implementation="org.mortbay.jetty.NCSARequestLog">
                <!--
                          This doesn't do anything for Jetty, but is a workaround for a
                          Maven bug that prevents the requestLog from being set.
                      -->
                <append>true</append>
            </requestLog>
            <webApp>${basedir}/out/war/Spring2_5_6_war.war</webApp>
        </configuration>
    </plugin>