使用maven编译时报错

[ERROR] No plugin found for prefix 'tomcat7' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (/Users/liuhaolai/library/repository_pinyougou), central (https://repo.maven.apache.org/maven2)] -> [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/NoPluginFoundForPrefixException

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更改方式在pom.xml加入maven的配置文件

<build>     
    <plugins>           
        <!-- java编译插件 -->
        <plugin>
            <groupId>org.apache.tomcat.maven</groupId>
            <artifactId>tomcat7-maven-plugin</artifactId>
            <version>2.2</version>
            <configuration>
                <!-- 指定端口 -->
                <port>9101</port>
                <!-- 请求路径 -->
                <path>/</path>
            </configuration>                
        </plugin>
    </plugins>
</build>