从svn导入项目，idea中Maven报错，我执行的是maven的clean操作。

**No goals have been specified for this build. You must specify a valid lifecycle phase or a goal in the format <plugin-prefix>:<goal> or <plugin-group-id>:<plugin-artifact-id>[:<plugin-version>]:<goal>.

原因可能是：idea的maven还没配置路径导致的。

**Available lifecycle phases are: validate, initialize, generate-sources, process-sources, generate-resources, process-resources, compile, process-classes, generate-test-sources, process-test-sources, generate-test-resources, process-test-resources, test-compile, process-test-classes, test, prepare-package, package, pre-integration-test, integration-test, post-integration-test, verify, install, deploy, pre-clean, clean, post-clean, pre-site, site, post-site, site-deploy. -> [Help 1]

org.apache.maven.lifecycle.NoGoalSpecifiedException: No goals have been specified for this build. You must specify a valid lifecycle phase or a goal in the format <plugin-prefix>:<goal> or <plugin-group-id>:<plugin-artifact-id>[:<plugin-version>]:<goal>. Available lifecycle phases are: validate, initialize, generate-sources, process-sources, generate-resources, process-resources, compile, process-classes, generate-test-sources, process-test-sources, generate-test-resources, process-test-resources, test-compile, process-test-classes, test, prepare-package, package, pre-integration-test, integration-test, post-integration-test, verify, install, deploy, pre-clean, clean, post-clean, pre-site, site, post-site, site-deploy.at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:104)at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:316)at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:153)at org.apache.maven.cli.MavenCli.execute(MavenCli.java:451)at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:188)at org.apache.maven.cli.MavenCli.main(MavenCli.java:134)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)at java.lang.reflect.Method.invoke(Method.java:597)at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)[ERROR] [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]