WTP安装

3.2版本安装：
Eclipse3.2 + WTP1.5.5开发Web很方便，在此处下载：
http://www.eclipse.org/downloads/download.php?file=/webtools/downloads/drops/R1.5/R-1.5.5-200708291442/wtp-all-in-one-sdk-R-1.5.5-200708291442-win32.zip&url=http://download.actuatechina.com/eclipse/webtools/downloads/drops/R1.5/R-1.5.5-200708291442/wtp-all-in-one-sdk-R-1.5.5-200708291442-win32.zip&mirror_id=385
上面是包含eclipse3.2在内的开发包，如果只需要插件，可以下载如下3个插件安装（因为WTP插件需要EMF和GEF的支持）
http://www.eclipse.org/downloads/download.php?file=/webtools/downloads/drops/R1.5/R-1.5.5-200708291442/wtp-sdk-R-1.5.5200708291442.zip&url=http://download.actuatechina.com/eclipse/webtools/downloads/drops/R1.5/R-1.5.5-200708291442/wtp-sdk-R-1.5.5-200708291442.zip&mirror_id=385
http://download.eclipse.org/modeling/emf/emf/downloads/drops/2.2.4/M200708282030/emf-sdo-xsd-SDK-M200708282030.zip
http://download.eclipse.org/tools/gef/downloads/drops/R-3.2.2-200702081315/GEF-SDK-3.2.2.zip

3.3版本安装
  一般我们使用插件安装方法：首先确保你电脑有了Eclipse 3.3版本，然后下载如下插件。

      Eclipse Modeling Framework (EMF, XSD InfoSet, SDO) 
http://www.eclipse.org/downloads/download.php?file=/modeling/emf/emf/downloads/drops/2.3.0/R200706262000/emf-sdo-xsd-SDK-2.3.0.zip
      Graphical Editing Framework (GEF)
http://www.eclipse.org/downloads/download.php?file=/tools/gef/downloads/drops/R-3.3-200706281000/GEF-SDK-3.3.zip
      Data Tools Platform (DTP)
http://www.eclipse.org/downloads/download.php?file=/datatools/downloads/1.5/dtp-sdk_1.5.zip
     Eclipse Web Tools Platform(WTP)
http://www.eclipse.org/downloads/download.php?file=/webtools/downloads/drops/R2.0/R-2.0.2-20080223205547/wtp-R-2.0.220080223205547.zip&url=http://download.actuatechina.com/eclipse/webtools/downloads/drops/R2.0/R-2.0.2-20080223205547/wtp-R-2.0.2-20080223205547.zip&mirror_id=385

关于插件的安装方法 参见 http://easyworld.iteye.com/admin/blogs/212618

最简单的方法 我们可以下载eclipse-jee版本