maven配置启动多个web应用

<plugin><groupId>org.mortbay.jetty</groupId><artifactId>maven-jetty-plugin</artifactId><version>6.1.22</version><configuration><connectors><connector implementation="org.mortbay.jetty.nio.SelectChannelConnector"><port>80</port><maxIdleTime>60000</maxIdleTime></connector></connectors><contextPath>/risk.webapp</contextPath><scanIntervalSeconds>3</scanIntervalSeconds><contextHandlers><contextHandler implementation="org.mortbay.jetty.webapp.WebAppContext"><war>../../billing/billing.webapp/target/billing.webapp.war</war><contextPath>/billing.webapp</contextPath></contextHandler></contextHandlers></configuration></plugin>