maven 的一些配置和常见错误（The JAVA_HOME environment variable is not defined correctly. This environment vari）

错误：
The JAVA_HOME environment variable is not defined correctly.
This environment variable is needed to run this program
NB: JAVA_HOME should point to a JDK not a JRE.

http://blog.csdn.net/frankarmstrong/article/details/69945774

maven 里面一些基础的dos命令：

http://blog.csdn.net/lwwgtm/article/details/27189715

使用两个验证：
mvn -version 验证maven是否安装成功

mvn help:system 验证是否配置成功

mvn基本操作

http://m.blog.csdn.net/moHedong/article/details/52456527