Eclipse安装maven插件出错

[环境:Windows7 64bit ,  工具:eclipse-jee-helios-SR2-win32-x86_64]


Cannot complete the install because one or more required items could not be found.
  Software being installed: Maven Integration for Eclipse (Required) 0.12.1.20110112-1712 (org.maven.ide.eclipse.feature.feature.group 0.12.1.20110112-1712)
  Missing requirement: Maven Integration for Eclipse (Editors) 0.12.1.20110112-1712 (org.maven.ide.eclipse.editor 0.12.1.20110112-1712) requires 'bundle org.eclipse.zest.core 0.0.0' but it could not be found
  Cannot satisfy dependency:
    From: Maven Integration for Eclipse (Required) 0.12.1.20110112-1712 (org.maven.ide.eclipse.feature.feature.group 0.12.1.20110112-1712)
    To: org.maven.ide.eclipse.editor [0.12.1.20110112-1712]
感觉上是少maven依赖的eclipse插件，网上查了查，解决方法如下：

启动eclipse，点击window——>preferences——>install/update——>available software sites，点击Add

添加如下信息：
GEF  http://download.eclipse.org/tools/gef/updates/releases/
然后再重新安装maven插件