eclipse安装ADT20问题

Eclipse 4.2 , android developers tools

Just loaded one latest eclipse Classic IDE.（安装最新版的eclipse）




Try to install the developers tools, get an error,（但在安装ADT20时，會出现这样的问题）

cannot complete the install because one or more required items could not be found. Software being installed: Android Development Tools 20.0.0.v201206242043-391819 (com.android.ide.eclipse.adt.feature.group 20.0.0.v201206242043-391819) Missing requirement: Android Development Tools 20.0.0.v201206242043-391819(com.android.ide.eclipse.adt.feature.group 20.0.0.v201206242043-391819) requires 'org.eclipse.wst.sse.core 0.0.0' but it could not be found

basically, the error means it need the wst feature, just insall the web feature, then the installation will go through, (导致这个问题的原因请看红字部分，解决方法就如图所示）