Dubbo框架项目 启动服务提供者 tomcat报错[ERROR] No plugin found for prefix 'tomcat7' in the current project and in

错误信息：
[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 (E:\Maven\repository), alimaven (http://121.42.166.202:8081/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
原因：
tomcat版本号错了

	  <plugins>
	      <plugin>
				<groupId>org.apache.tomcat.maven</groupId>
				<artifactId>tomcat7-maven-plugin</artifactId>
				<version>3.6.1</version>
				<configuration>
					<!-- 指定端口 -->
					<port>9101</port>
					<!-- 请求路径 -->
					<path>/</path>
				</configuration>
	  	  </plugin>
	  </plugins> 

换回即可2.2即可