端口被占用

Failed to execute goal org.mortbay.jetty:maven-jetty-plugin:6.1.26:run (default-cli) on project spring-high: Failure: Address already in use: bind -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
[INFO] Shutdown hook executing
[INFO] Stopped [email protected]:80

80可以换成8090

<plugin>
    <groupId>org.mortbay.jetty</groupId>
    <artifactId>maven-jetty-plugin</artifactId>
    <version>6.1.26</version>
    <configuration>
        <webDefaultXml>src/main/resources/webdefault.xml</webDefaultXml>
        <contextPath>/</contextPath>
        <connectors>
            <connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">
                <port>8090</port>
            </connector>
        </connectors>
        <scanIntervalSeconds>0</scanIntervalSeconds>
        <scanTargetPatterns>
            <scanTargetPattern>
                <directory>src/main/webapp</directory>
                <includes>
                    <include>**/*.xml</include>
                    <include>**/*.properties</include>
                </includes>
            </scanTargetPattern>
        </scanTargetPatterns>
        <systemProperties>
            <systemProperty>
                <name>
                    javax.xml.parsers.DocumentBuilderFactory
                </name>
                <value>
                    com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl
                </value>
            </systemProperty>
            <systemProperty>
                <name>
                    javax.xml.parsers.SAXParserFactory
                </name>
                <value>
                    com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl
                </value>
            </systemProperty>
            <systemProperty>
                <name>
                    javax.xml.transform.TransformerFactory
                </name>
                <value>
                    com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl
                </value>
            </systemProperty>
            <systemProperty>
                <name>org.eclipse.jetty.util.URI.charset</name>
                <value>UTF-8</value>
            </systemProperty>
        </systemProperties>
    </configuration>
</plugin>