maven学习_2

转载自：http://meifage.iteye.com/blog/1090217

mvn help:system最后出错：

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-help-plugin:2.1.1:
system (default-cli) on project standalone-pom: Execution default-cli of goal or
g.apache.maven.plugins:maven-help-plugin:2.1.1:system failed: Plugin org.apache.
maven.plugins:maven-help-plugin:2.1.1 or one of its dependencies could not be re
solved: Could not transfer artifact org.apache.maven.plugin-tools:maven-plugin-t
ools-api:jar:2.4.3 from/to central ( onException

解决：设置HTTP代理
编辑~/.m2/settings.xml文件添加代理配置如下：

… 

   

      my-proxy

      true

      http

      本机IP

      80

     

   

 
  …

2)Could not calculate build plan: Failure to transfer org.apache.maven.plugins:maven-surefire-plugin:pom:2.7.1 from