生成失败，有没有人遇到这个错误！

[ERROR] Could not find goal 'generator' in plugin org.mybatis.generator:mybatis-generator-maven-plugin:1.3.7 among available goals generate, help -> [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/MojoNotFoundException