Java EE tool和Web tool安装
点击help,选择Install New Software
在Available Software窗口中的Work with项选择Available Software窗口中的Work with项选择
Galileo - http://download.eclipse.org/releases/galileo
展开Web、XML、 and Java EE Enterprise Development这项,选择Eclipse Java EE Developer Tools和Eclipse WebDeveloper Tools 这这两项,next、finish、reset