安裝maven 出現錯誤：Unsupported major.minor version 51.0（jdk版本錯誤）

      環境 Windows 8.1   jdk版本 1.6    

  安裝apche-maven-3.3.3   出現錯誤：Unsupported major.minor version 51.0（jdk版本錯誤）

 其ReadMe.txt:

JDK:

    1.7 or above (this is to execute Maven - it still allows you to build against 1.3

    and prior JDK's).

   安裝apche-maven-3.2.5 正常

其ReadMe.txt:

JDK:

    1.6 or above (this is to execute Maven - it still allows you to build against 1.3

    and prior JDK's).

具體安裝方法：http://jingyan.baidu.com/album/295430f136e8e00c7e0050b9.html?picindex=3