maven运行出现这个情况，大佬求解决

[INFO] Scanning for projects...
[INFO] Downloading from alimaven: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/plugins/maven-metadata.xml
[INFO] Downloading from alimaven: http://maven.aliyun.com/nexus/content/groups/public/org/codehaus/mojo/maven-metadata.xml
[INFO] Downloaded from alimaven: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/plugins/maven-metadata.xml (9.7 kB at 5.3 kB/s)
[INFO] Downloaded from alimaven: http://maven.aliyun.com/nexus/content/groups/public/org/codehaus/mojo/maven-metadata.xml (21 kB at 11 kB/s)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.007 s
[INFO] Finished at: 2019-07-17T17:50:15+08:00
[INFO] ------------------------------------------------------------------------
[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 (D:\repository), alimaven (http://maven.aliyun.com/nexus/content/groups/public/)] -> [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

更改方式在pom.xml加入maven的配置文件

    <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>

详细参考这个：https://blog.csdn.net/u012661010/article/details/73734058

<plugin>
    <groupId>org.apache.tomcat.maven</groupId>
    <artifactId>tomcat7-maven-plugin</artifactId>
    <version>2.2</version>
</plugin>